{"type": "FeatureCollection", "features": [{"id": "10.1007/s10646-009-0329-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:15:04Z", "type": "Journal Article", "created": "2009-06-06", "title": "Trace Elements And Activity Of Antioxidative Enzymes In Cistus Ladanifer L. Growing On An Abandoned Mine Area", "description": "The Mediterranean shrub Cistus ladanifer grows naturally in S\u00e3o Domingos (Portugal), an abandoned copper mine. High levels of trace elements in plants can generate oxidative stress increasing the activity of antioxidant enzymes. The aim of this work was to evaluate and compare As, Cu, Pb and Zn concentrations and the activity of the soluble and cell wall ionically bounded forms of the enzymes catalase, peroxidase and superoxide dismutase in leaves of C. ladanifer, collected in spring and summer, growing on S\u00e3o Domingos mine and on a non-contaminated area (Pomar\u00e3o). S\u00e3o Domingos soils showed high total concentrations of As (2.6 g kg(-1)) and Pb (7.3 g kg(-1)) however the available fraction represented less than 1.5% of the total. C. ladanifer population from mine showed tolerance to Pb and Zn, which attain in leaves concentrations considered toxic for plants. The enzymatic activity of catalase, peroxidise and superoxide dismutase varied with plant populations and seasons, although with no particular trend, being specific to each trace element and enzyme cell localization. Catalase activity was evenly distributed between the soluble and ionically bounded forms, whereas the ionically bounded form of peroxidase predominated relatively to total activity, and the opposite was observed for superoxide dismutase. Spring and summer leaves from the two areas presented enzymatic activities in both fractions except to peroxidase soluble activities in leaves collected in summer. C. ladanifer enzymatic activity seems to be related with the co-existence of different stress factors (trace elements concentration, temperature, UV radiation and drought). The survival and growth of this species on contaminated mining soils is due to the presence of effective antioxidant enzyme-based defence systems.", "keywords": ["0106 biological sciences", "trace elements", "Industrial Waste", "antioxidative enzymes", "Antioxidative enzymes", "01 natural sciences", "Mining", "Soil", "Cell Wall", "Soil Pollutants", "adaptative capacity", "0105 earth and related environmental sciences", "Trace elements", "Portugal", "Cistus", "Adaptative capacity", "15. Life on land", "Sulphide abandoned mine", "cistus ladanifer L.", "Trace Elements", "Plant Leaves", "Oxidative Stress", "sulphide abandoned mine", "Cistus ladanifer L.", "Oxidoreductases", "Copper"]}, "links": [{"href": "https://doi.org/10.1007/s10646-009-0329-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecotoxicology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10646-009-0329-y", "name": "item", "description": "10.1007/s10646-009-0329-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10646-009-0329-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-06-05T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2021.151567", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:56Z", "type": "Journal Article", "created": "2021-11-08", "title": "Mineral characterization and composition of Fe-rich flocs from wetlands of Iceland: Implications for Fe, C and trace element export", "description": "Open AccessIn freshwater wetlands, redox interfaces characterized by circumneutral pH, steep gradients in O2, and a continual supply of Fe(II) form ecological niches favorable to microaerophilic iron(II) oxidizing bacteria (FeOB) and the formation of flocs; associations of (a)biotic mineral phases, microorganisms, and (microbially-derived) organic matter. On the volcanic island of Iceland, wetlands are replenished with Fe-rich surface-, ground- and springwater. Combined with extensive drainage of lowland wetlands, which forms artificial redox gradients, accumulations of bright orange (a)biotically-derived Fe-rich flocs are common features of Icelandic wetlands. These loosely consolidated flocs are easily mobilized, and, considering the proximity of Iceland's lowland wetlands to the coast, are likely to contribute to the suspended sediment load transported to coastal waters. To date, however, little is known regarding (Fe) mineral and elemental composition of the flocs. In this study, flocs from wetlands (n = 16) across Iceland were analyzed using X-ray diffraction and spectroscopic techniques (X-ray absorption and 57Fe M\u00f6ssbauer) combined with chemical extractions and (electron) microscopy to comprehensively characterize floc mineral, elemental, and structural composition. All flocs were rich in Fe (229\u2013414 mg/g), and floc Fe minerals comprised primarily ferrihydrite and nano-crystalline lepidocrocite, with a single floc sample containing nano-crystalline goethite. Floc mineralogy also included Fe in clay minerals and appreciable poorly-crystalline aluminosilicates, most likely allophane and/or imogolite. Microscopy images revealed that floc (bio)organics largely comprised mineral encrusted microbially-derived components (i.e. sheaths, stalks, and EPS) indicative of common FeOB Leptothrix spp. and Gallionella spp. Trace element contents in the flocs were in the low \u03bcg/g range, however nearly all trace elements were extracted with hydroxylamine hydrochloride. This finding suggests that the (a)biotic reductive dissolution of floc Fe minerals, plausibly driven by exposure to the varied geochemical conditions of coastal waters following floc mobilization, could lead to the release of associated trace elements. Thus, the flocs should be considered vectors for transport of Fe, organic carbon, and trace elements from Icelandic wetlands to coastal waters.", "keywords": ["Minerals", "Iron", "Iceland", "Freshwater flocs", "04 agricultural and veterinary sciences", "15. Life on land", "Ferric Compounds", "01 natural sciences", "6. Clean water", "Trace Elements", "EXAFS", "13. Climate action", "Freshwater flocs; Fe(II)-oxidizing bacteria; Biominerals; Wetlands; EXAFS; 57Fe M\u00f6ssbauer", "Wetlands", "57Fe M\u00f6ssbauer", "Biominerals", "Fe(II)-oxidizing bacteria", "0401 agriculture", " forestry", " and fisheries", "14. Life underwater", "Oxidation-Reduction", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2021.151567"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2021.151567", "name": "item", "description": "10.1016/j.scitotenv.2021.151567", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2021.151567"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-04-01T00:00:00Z"}}, {"id": "10.1007/s00572-016-0694-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:14:51Z", "type": "Journal Article", "created": "2016-04-14", "title": "Organic Amendments Increase Phylogenetic Diversity Of Arbuscular Mycorrhizal Fungi In Acid Soil Contaminated By Trace Elements", "description": "In 1998, a toxic mine spill polluted a 55-km(2) area in a basin southward to Do\u00f1ana National Park (Spain). Subsequent attempts to restore those trace element-contaminated soils have involved physical, chemical, or biological methodologies. In this study, the restoration approach included application of different types and doses of organic amendments: biosolid compost (BC) and leonardite (LEO). Twelve years after the last addition, molecular analyses of arbuscular mycorrhizal (AM) fungal communities associated with target plants (Lamarckia aurea and Chrysanthemum coronarium) as well as analyses of trace element concentrations both in soil and in plants were performed. The results showed an improved soil quality reflected by an increase in soil pH and a decrease in trace element availability as a result of the amendments and dosages. Additionally, the phylogenetic diversity of the AM fungal community increased, reaching the maximum diversity at the highest dose of BC. Trace element concentration was considered the predominant soil factor determining the AM fungal community composition. Thereby, the studied AM fungal community reflects a community adapted to different levels of contamination as a result of the amendments. The study highlights the long-term effect of the amendments in stabilizing the soil system.", "keywords": ["2. Zero hunger", "0301 basic medicine", "Minerals", "0303 health sciences", "Bioindicator", "Chrysanthemum", "Genetic Variation", "Hydrogen-Ion Concentration", "15. Life on land", "Poaceae", "Soil biodiversity", "Trace element contaminated soils", "Ecosystem restoration", "Mining", "Soil fungal community", "Trace Elements", "Soil", "03 medical and health sciences", "Biodegradation", " Environmental", "13. Climate action", "Mycorrhizae", "Mine spill", "Bioindicators", "Soil Pollutants", "Phylogeny"]}, "links": [{"href": "https://doi.org/10.1007/s00572-016-0694-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Mycorrhiza", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00572-016-0694-3", "name": "item", "description": "10.1007/s00572-016-0694-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00572-016-0694-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-04-12T00:00:00Z"}}, {"id": "10.1007/s11356-013-1649-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:15:22Z", "type": "Journal Article", "created": "2013-04-22", "title": "A Study On As, Cu, Pb And Zn (Bio)Availability In An Abandoned Mine Area (Sao Domingos, Portugal) Using Chemical And Ecotoxicological Tools", "description": "The aim of this study was to relate the results obtained by chemical methods, used to assess environmental (bio)availability, with the ecotoxic response and bioaccumulation of trace elements (TE) by the earthworm Eisenia fetida exposed to field-contaminated, metal-polluted soils from a sulphide mine. The extracting solution 0.5\u00a0M NH4CH3COO, 0.5\u00a0M CH3COOH and 0.02\u00a0M EDTA (pH\u00a04.7), was able to predict environmental bioavailability of TE to E. fetida. However, the toxicological bioavailability could not be predicted from the results of the chemical extractions or from the bioaccumulation results: E. fetida reproduction was higher in soils where environmental bioavailability of TE and bioaccumulation values were also higher. In this study, the toxic response of the organism seemed to be more influenced by the overall nutritional status of the soil (e.g. pH, organic matter, plant nutrient availability and cation exchange capacity) than by its TE contamination. In the case of anthropogenic multi-contaminated sites, the different soil characteristics exert an important and confounding influence in the toxic response and the relationship between different bioavailable fractions cannot be easily established, emphasising the need to combine results from chemical methods with those from bioassays when evaluating the bioavailability of TE in these soils.", "keywords": ["Bioavailability", "Mine contaminated soils", "Biological Availability", "Ecotoxicology", "01 natural sciences", "Bioassays", "Mining", "Arsenic", "Soil", "Animals", "Soil Pollutants", "Oligochaeta", "0105 earth and related environmental sciences", "Trace elements", "Portugal", "04 agricultural and veterinary sciences", "Bioaccumulation", "Zinc", "Lead", "Metals", "Indexa\u00e7\u00e3o ISI", "0401 agriculture", " forestry", " and fisheries", "Chemical extraction methods", "Copper", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1007/s11356-013-1649-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20and%20Pollution%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11356-013-1649-2", "name": "item", "description": "10.1007/s11356-013-1649-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11356-013-1649-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-04-23T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.06.099", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:15:56Z", "type": "Journal Article", "created": "2018-07-03", "title": "ADM1 based mathematical model of trace element precipitation/dissolution in anaerobic digestion processes", "description": "Due to the complex biogeochemistry of trace elements (TEs, e.g. Fe, Ni and Co) in anaerobic digestion processes, their role and fate is poorly understood. Challenging, time consuming and low detection limits of analytical procedures necessitate recruitment of mathematical models. A dynamic mathematical model based on anaerobic digestion model no.1 (ADM1) has been proposed to simulate the effect of TEs. New chemical equilibrium association/dissociation and precipitation/dissolution reactions have been implemented to determine TE bioavailability and their effect on anaerobic digestion. The model considers interactions with inorganic carbonate (HCO3- and CO32-), phosphate (PO43-, HPO42-, H2PO4-) and sulfide (HS- and S2-). The effect of deficiency, activation, inhibition and toxicity of TEs on the biochemical processes has been modelled based on a dose-response type inhibition function. The new model can predict: the dynamics of TEs (among carbonate, sulfide and phosphate); the starvation of TEs; and the effect of initial sulfur-phosphorus ratio in an in-silico batch anaerobic system.", "keywords": ["ADM1", "Trace elements", "0211 other engineering and technologies", "Phosphorus", "Precipitation", "02 engineering and technology", "Models", " Theoretical", "01 natural sciences", "7. Clean energy", "Trace Elements", "Bioreactors", "Solubility", "Anaerobic digestion", "Anaerobic digestion; Trace elements; Mathematical modeling; Precipitation; ADM1", "Mathematical modeling", "Anaerobiosis", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2018.06.099"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2018.06.099", "name": "item", "description": "10.1016/j.biortech.2018.06.099", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2018.06.099"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-11-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.12.064", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:15:56Z", "type": "Journal Article", "created": "2018-12-22", "title": "ADM1 based mathematical model of trace element complexation in anaerobic digestion processes", "description": "In this study, a new model based on anaerobic digestion model no.1 (ADM1) approach has been proposed to simulate trace elements (TEs) complexation, precipitation and their effect on the anaerobic batch methane production. TEs complexation reactions with VFAs and EDTA have been incorporated in an extended ADM1 model which considers TE precipitation/dissolution reactions as well as biodegradation processes. The kinetic model tracks the dynamics of 90 state variables which constitute the components of the proposed anaerobic digestion (AD) model. The incorporation of the complexation reactions required the definition of new inorganic components (EDTA species) and new complexation process rates in the ADM1 framework. The charge balance was modified accordingly to consider the effects of the additional components. The new model is able to predict: a) the effect of TE-EDTA/VFA complexation on methane production, and b) the effect of the initial calcium and magnesium concentrations on process performance.", "keywords": ["ADM1", "Trace elements", "0211 other engineering and technologies", "02 engineering and technology", "Models", " Theoretical", "Fatty Acids", " Volatile", "01 natural sciences", "7. Clean energy", "Trace Elements", "[SDU] Sciences of the Universe [physics]", "Kinetics", "Biodegradation", " Environmental", "Bioreactors", "13. Climate action", "Anaerobic digestion", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "Complexation", "Mathematical modeling", "Anaerobic digestion; Trace elements; Complexation; Mathematical modeling; ADM1;", "Anaerobiosis", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2018.12.064"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2018.12.064", "name": "item", "description": "10.1016/j.biortech.2018.12.064", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2018.12.064"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-03-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2007.06.085", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:00Z", "type": "Journal Article", "created": "2007-08-21", "title": "Warming And Drought Change Trace Element Bioaccumulation Patterns In A Mediterranean Shrubland", "description": "A field experiment consisting of drought and warming manipulation was conducted in a Mediterranean shrubland dominated by the shrubs Erica multiflora and Globularia alypum. The aim was to investigate the effects of the climatic changes predicted by IPCC models for the coming decades on trace element concentration and accumulation in aboveground biomass, plant litter, and soil. Warming increased concentrations and aboveground accumulation of some trace elements related to plant root uptake, such as Al, As, Cr, Cu, and partially Pb. This effect was more general in E. multiflora than in G. alypum. The stronger effects were increases in Al leaf concentrations (42%) and aboveground accumulation (500gha(-1)) in E. multiflora, in As stem biomass accumulation (0.2gha(-1)) in E. multiflora, and in Cr leaf concentrations (51%) in G. alypum and stem aboveground accumulation in E. multiflora (1.1gha(-1)). These species-specific increases were related to greater retranslocation, photosynthetic capacity and growth in E. multiflora than in G. alypum. Warming decreased the concentrations of some trace elements in leaf litter, implying the existence of an increased leaf retranslocation. Drought increased As (40%) and Cd (55%) in E. multiflora stems, whereas it decreased Cu (50%) in leaves, Ni (28%) in stems and Pb (32%) in leaf litter of G. alypum. The increasing concentrations of some trace elements in E. multiflora and not in G. alypum were related to a greater growth reduction in E. multiflora than in G. alypum. Warming increased As soil solubility (67%) and decreased total soil As (21%). Those changes were related to a greater Fe mobilization in warming plot and to a greater plant capture. Drought increased Hg (350%) concentrations in soils but had no significant effects on trace element accumulation in aboveground biomass. The different response to warming and drought in the two dominant species implies uneven changes in the quality of the plant tissues that may have implications for herbivores. This may be specially important for the performance of the studied Mediterranean ecosystems under the warmer and drier conditions predicted by the next decades by the GCM and ecophysiological models.", "keywords": ["2. Zero hunger", "Trace elements", "Biomass concentrations", "Mediterranean Region", "15. Life on land", "Models", " Biological", "01 natural sciences", "Soil content", "6. Clean water", "Trace Elements", "Disasters", "Mediterranean shrubland", "Heavy metals", "13. Climate action", "Metals", " Heavy", "Climate change", "Soil Pollutants", "Biomass", "Seasons", "Weather", "Ecosystem", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2007.06.085"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2007.06.085", "name": "item", "description": "10.1016/j.chemosphere.2007.06.085", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2007.06.085"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-01-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2010.06.047", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:00Z", "type": "Journal Article", "created": "2010-07-06", "title": "Trace Element Availability In A Sewage Sludge-Amended Cotton Grown Mediterranean Soil", "description": "Long-term field investigations on the use of biosolids are scarce in the Mediterranean region, especially on non-food high-profit crops. Thus we studied the effects of repeated sludge application for 4 yr on trace element (both essential and non-essential) availability to cotton, by applying sludge at four increasing rates up to 50 Mg ha(-1). Although sludge had low metal concentrations, sludge-added trace element availability (assessed with soil-to-plant transfer coefficient) was higher in the first year compared to those in the subsequent years of experiment, but it decreased with time to the value of the unamended control. This shows that trace element mobility can be reduced within a time-scale of a few years, provided soils have a relatively sufficient retention capacity (high CEC, clay, and non-acidic pH) and applied sludge has low heavy metal content. We also found that sludge-borne organic matter greatly affected metal availability, since metal transfer coefficients decreased with elevated organic matter content.", "keywords": ["2. Zero hunger", "Gossypium", "Manganese", "Greece", "Sewage", "Climate", "04 agricultural and veterinary sciences", "01 natural sciences", "6. Clean water", "Trace Elements", "12. Responsible consumption", "Plant Leaves", "Zinc", "Biodegradation", " Environmental", "Lead", "Nickel", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Copper", "Cadmium", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2010.06.047"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2010.06.047", "name": "item", "description": "10.1016/j.chemosphere.2010.06.047", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2010.06.047"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-09-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2010.02.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:14Z", "type": "Journal Article", "created": "2010-03-15", "title": "Effects Of Biochar And Greenwaste Compost Amendments On Mobility, Bioavailability And Toxicity Of Inorganic And Organic Contaminants In A Multi-Element Polluted Soil", "description": "Applying amendments to multi-element contaminated soils can have contradictory effects on the mobility, bioavailability and toxicity of specific elements, depending on the amendment. Trace elements and PAHs were monitored in a contaminated soil amended with biochar and greenwaste compost over 60 days field exposure, after which phytotoxicity was assessed by a simple bio-indicator test. Copper and As concentrations in soil pore water increased more than 30 fold after adding both amendments, associated with significant increases in dissolved organic carbon and pH, whereas Zn and Cd significantly decreased. Biochar was most effective, resulting in a 10 fold decrease of Cd in pore water and a resultant reduction in phytotoxicity. Concentrations of PAHs were also reduced by biochar, with greater than 50% decreases of the heavier, more toxicologically relevant PAHs. The results highlight the potential of biochar for contaminated land remediation.", "keywords": ["04 agricultural and veterinary sciences", "01 natural sciences", "United Kingdom", "6. Clean water", "Trace Elements", "Soil", "13. Climate action", "Metals", " Heavy", "Lolium", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Adsorption", "Polycyclic Aromatic Hydrocarbons", "Environmental Restoration and Remediation", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2010.02.003"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2010.02.003", "name": "item", "description": "10.1016/j.envpol.2010.02.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2010.02.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-06-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2019.02.120", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:41Z", "type": "Journal Article", "created": "2019-03-06", "title": "Distribution trend of trace elements in digestate exposed to air: Laboratory-scale investigations using DGT-based fractionation", "description": "The use of digestate as amendment for agricultural soils has already been proposed as an alternative to mineral fertilizers or undigested organic matter. However, little information is available concerning the effect of digestate atmospheric exposure on trace elements speciation and, consequently, on their mobility and bio-accessibility when digestate is stored in open tanks or handled before land spreading. In this study, we investigated at laboratory-scale the effect of digestate aeration on the distribution of Al, As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se and W using the diffusive gradients in thin films technique (DGT)-based fractionation. For this purpose, experiments were performed to assess the variation in distribution between the labile, soluble and particulate fractions over time in digested sewage sludge during passive and forced aeration. Results showed that aeration promoted a dissolution of Al, As, Co, Cr, Cu, Fe, Mn, Mo and Pb, suggesting a possible increase in their mobility that may likely occur during storage in open tanks or handling before land spreading. Labile elements' fraction increased only during forced aeration (except for Fe and Mn), suggesting that their short-term bio-accessibility can increase only after significant aeration as the one assumed to occur when land spreading takes place.", "keywords": ["550", "[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering", "Speciation", "[SDU.STU]Sciences of the Universe [physics]/Earth Sciences", "Diffusive gradients in thin films (DGT)", "Chemical Fractionation", "01 natural sciences", "630", "Soil", "Digested sewage sludge", "[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering", "Fractionation", "Diffusive gradients in thin films (DGT); Digested sewage sludge; Fractionation; Metalloids; Metals; Speciation; Chemical Fractionation; Environmental Monitoring; Sewage; Soil; Trace Elements", "Metalloids", "0105 earth and related environmental sciences", "2. Zero hunger", "Sewage", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "Trace Elements", "Metals", "13. Climate action", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "0401 agriculture", " forestry", " and fisheries", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.jenvman.2019.02.120"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jenvman.2019.02.120", "name": "item", "description": "10.1016/j.jenvman.2019.02.120", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2019.02.120"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2013.02.048", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:52Z", "type": "Journal Article", "created": "2013-03-25", "title": "Heavy Metal Content In Ash Of Energy Crops Growing In Sewage-Contaminated Natural Wetlands: Potential Applications In Agriculture And Forestry?", "description": "One of the greatest current challenges is to find cost-effective and eco-friendly solutions to the ever increasing needs of modern society. Some plant species are suitable for a multitude of biotechnological applications such as bioenergy production and phytoremediation. A sustainable practice is to use energy crops to clean up polluted lands or to treat wastewater in constructed wetlands without claiming further arable land for biofuel production. However, the disposal of combustion by-products may add significant costs to the whole process, especially when it deals with toxic waste. This study aimed to investigate the possibility of recycling ash from energy biomass as a fertilizer for agriculture and forestry. In particular, the concentrations of Cd, Cr, Cu, Mn, Pb and Zn were analyzed in the plant tissues and corresponding ash of the grasses Phragmites australis and Arundo donax, collected in an urban stream affected by domestic sewage. Results showed that the metal concentration in ash is 1.5-3 times as high as the values in plant tissues. However, metal enriched ash showed much lower element concentrations than the legal limits for ash reutilization in agriculture and forestry. This study found that biomass ash from constructed wetlands may be considered as a potential fertilizer rather than hazardous waste. Energy from biomass can be a really sustainable and clean option not only through the reduction of greenhouse gas emissions, but also through ash recycling for beneficial purposes, thus minimizing the negative impacts of disposal.", "keywords": ["2. Zero hunger", "Sewage", "Agriculture", "Forestry", "Incineration", "15. Life on land", "Poaceae", "01 natural sciences", "7. Clean energy", "bionenergy; ashes; reeds", "6. Clean water", "12. Responsible consumption", "Biodegradation", " Environmental", "Italy", "13. Climate action", "Biofuels", "Metals", " Heavy", "Wetlands", "Ash; Constructed wetlands; Energy biomass; Macrophytes; Recycling; Trace elements", "11. Sustainability", "Soil Pollutants", "Biomass", "Fertilizers", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.iris.unict.it/bitstream/20.500.11769/16444/1/Ash_Science_2013.pdf"}, {"href": "https://doi.org/10.1016/j.scitotenv.2013.02.048"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2013.02.048", "name": "item", "description": "10.1016/j.scitotenv.2013.02.048", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2013.02.048"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-05-01T00:00:00Z"}}, {"id": "10.18167/DVN1/OYD9WF", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:19:58Z", "type": "Dataset", "title": "Dataset of organic fertilisers' characteristics - French data", "description": "Collection of cured data on nutrients (N, P, K, C), trace elements (Cu, Zn, etc) and agronomic indicators (KeqN, ISMO) associated with French organic fertilisers, as described and modelled during the ACV-MAFOR project (Avad\u00ed 2020). Data representative of France, and to a lesser extent Europe, during the last 10 years.", "keywords": ["2. Zero hunger", "meta-analysis", "fertilizers", "A50 - Recherche agronomique", "Agricultural Sciences", "nutrients", "trace elements"], "contacts": [{"organization": "Avad\u00ed, Angel, Paillat, Jean-Marie,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.18167/DVN1/OYD9WF"}, {"rel": "self", "type": "application/geo+json", "title": "10.18167/DVN1/OYD9WF", "name": "item", "description": "10.18167/DVN1/OYD9WF", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.18167/DVN1/OYD9WF"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-01-01T00:00:00Z"}}, {"id": "10.2134/jeq2004.0369", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:20:12Z", "type": "Journal Article", "created": "2005-11-08", "title": "Cadmium, Copper, Nickel, And Zinc Availability In A Biosolids-Amended Piedmont Soil Years After Application", "description": "ABSTRACT<p>Concerns over the possible increase in phytoavailability of biosolids\uffe2\uff80\uff90applied trace metals to plants have been raised based on the assumption that decomposition of applied organic matter would increase phytoavailability. The objectives of this study were to assess the effect of time on chemical extractability and concentration of Cd, Cu, Ni, and Zn in plants on plots established by a single application of biosolids with high trace metals content in 1984. Biosolids were applied to 1.5 by 2.3 m confined plots of a Davidson clay loam (clayey, kaolinitic, thermic Rhodic Kandiudults) at 0, 42, 84, 126, 168, and 210 Mg ha\uffe2\uff88\uff921 The highest biosolids application supplied 4.5, 760, 43, and 620 kg ha\uffe2\uff88\uff921 of Cd, Cu, Ni, and Zn, respectively. Radish (Raphanus sativus L.), romaine lettuce (Lactuca sativa L. varlongifolia), and barley (Hordeum vulgare L.) were planted at the site for 3 consecutive years, 17 to 19 yr after biosolids application. Extractable Cd, Cu, Ni, and Zn (as measured by DTPA, CaCl2, and Mehlich\uffe2\uff80\uff901) were determined on 15\uffe2\uff80\uff90cm depth samples from each plot. The DTPA\uffe2\uff80\uff90extractable Cu and Zn decreased by 58 and 42%, respectively, 17 yr after application despite a significant reduction in organic matter content. Biosolids treatments had no significant effect on crop yield. Plant tissue metal concentrations increased with biosolids rate but were within the normal range of these crops. Trace metal concentrations in plants generally correlated well with the concentrations extracted from soil with DTPA, CaCl2, and Mehlich\uffe2\uff80\uff901. Metal concentrations in plant tissue exhibited a plateau response in most cases. The uptake coefficient values generated for the different crops were in agreement with the values set by the Part 503 Rule.</p>", "keywords": ["2. Zero hunger", "Virginia", "Biological Availability", "Hordeum", "04 agricultural and veterinary sciences", "Pentetic Acid", "15. Life on land", "01 natural sciences", "6. Clean water", "Raphanus", "Refuse Disposal", "Trace Elements", "Calcium Chloride", "Soil", "Zinc", "Nickel", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Copper", "Cadmium", "Lactuca", "0105 earth and related environmental sciences"], "contacts": [{"organization": "L. W. Zelazny, Beshr Sukkariyah, Gregory K. Evanylo, Rufus L. Chaney,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2134/jeq2004.0369"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2004.0369", "name": "item", "description": "10.2134/jeq2004.0369", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2004.0369"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-11-01T00:00:00Z"}}, {"id": "10.3390/agronomy10101463", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:20:53Z", "type": "Journal Article", "created": "2020-09-24", "title": "The Mineral Composition of Wild-Type and Cultivated Varieties of Pasture Species", "description": "<p>Mineral deficiencies in livestock are often prevented by using prophylactic supplementation, which is imprecise and inefficient. Instead, the trend for increased species diversity in swards is an opportunity to improve mineral concentrations in the basal diet. Currently, there are limited data on the mineral concentrations of different species and botanical groups, particularly for I and Se, which are among the most deficient minerals in livestock diets. We grew 21 pasture species, including some cultivar/wild type comparisons, of grasses, legumes and forbs, as single species stands in a pot study in a standard growth medium. Herbage concentrations of Co, Cu, I, Mn, Se, Zn, S, Mo and Fe showed no consistent differences between the wild and cultivated types. There were significant differences between botanical groups for many minerals tested. Forbs were highest in I and Se, grasses in Mn and legumes in Cu, Co, Zn and Fe. Comparing species concentrations to recommended livestock intakes, the forbs Achillea millefolium, Cichorium intybus and Plantago lanceolata, and the legumes Medicago lupulina, Trifolium hybridum and Lotus corniculatus, appear to be good sources of Co, Cu, I, Se and Zn. Further work is required to ensure these results are consistent in multispecies mixtures, in different soil types and in field trials.</p>", "keywords": ["forb", "0106 biological sciences", "grass", "trace elements", "01 natural sciences", "Sward", "Forb", "Multifunctional", "Micronutrients", "multifunctional", "Antagonism", "2. Zero hunger", "Trace elements", "S", "Multispecies", "Grass", "Livestock intake", "Agriculture", "legume", "04 agricultural and veterinary sciences", "15. Life on land", "antagonism", "Legume", "multispecies", "micronutrients", "livestock intake", "0401 agriculture", " forestry", " and fisheries", "sward"]}, "links": [{"href": "http://www.mdpi.com/2073-4395/10/10/1463/pdf"}, {"href": "https://www.mdpi.com/2073-4395/10/10/1463/pdf"}, {"href": "https://doi.org/10.3390/agronomy10101463"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agronomy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/agronomy10101463", "name": "item", "description": "10.3390/agronomy10101463", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/agronomy10101463"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-09-24T00:00:00Z"}}, {"id": "20.500.11850/529133", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-07-25T16:25:29Z", "type": "Journal Article", "created": "2021-11-08", "title": "Mineral characterization and composition of Fe-rich flocs from wetlands of Iceland: Implications for Fe, C and trace element export", "description": "Open AccessIn freshwater wetlands, redox interfaces characterized by circumneutral pH, steep gradients in O2, and a continual supply of Fe(II) form ecological niches favorable to microaerophilic iron(II) oxidizing bacteria (FeOB) and the formation of flocs; associations of (a)biotic mineral phases, microorganisms, and (microbially-derived) organic matter. On the volcanic island of Iceland, wetlands are replenished with Fe-rich surface-, ground- and springwater. Combined with extensive drainage of lowland wetlands, which forms artificial redox gradients, accumulations of bright orange (a)biotically-derived Fe-rich flocs are common features of Icelandic wetlands. These loosely consolidated flocs are easily mobilized, and, considering the proximity of Iceland's lowland wetlands to the coast, are likely to contribute to the suspended sediment load transported to coastal waters. To date, however, little is known regarding (Fe) mineral and elemental composition of the flocs. In this study, flocs from wetlands (n = 16) across Iceland were analyzed using X-ray diffraction and spectroscopic techniques (X-ray absorption and 57Fe M\u00f6ssbauer) combined with chemical extractions and (electron) microscopy to comprehensively characterize floc mineral, elemental, and structural composition. All flocs were rich in Fe (229\u2013414 mg/g), and floc Fe minerals comprised primarily ferrihydrite and nano-crystalline lepidocrocite, with a single floc sample containing nano-crystalline goethite. Floc mineralogy also included Fe in clay minerals and appreciable poorly-crystalline aluminosilicates, most likely allophane and/or imogolite. Microscopy images revealed that floc (bio)organics largely comprised mineral encrusted microbially-derived components (i.e. sheaths, stalks, and EPS) indicative of common FeOB Leptothrix spp. and Gallionella spp. Trace element contents in the flocs were in the low \u03bcg/g range, however nearly all trace elements were extracted with hydroxylamine hydrochloride. This finding suggests that the (a)biotic reductive dissolution of floc Fe minerals, plausibly driven by exposure to the varied geochemical conditions of coastal waters following floc mobilization, could lead to the release of associated trace elements. Thus, the flocs should be considered vectors for transport of Fe, organic carbon, and trace elements from Icelandic wetlands to coastal waters.", "keywords": ["Minerals", "Iron", "Iceland", "Freshwater flocs", "04 agricultural and veterinary sciences", "15. Life on land", "Ferric Compounds", "01 natural sciences", "6. Clean water", "Trace Elements", "EXAFS", "13. Climate action", "Freshwater flocs; Fe(II)-oxidizing bacteria; Biominerals; Wetlands; EXAFS; 57Fe M\u00f6ssbauer", "Wetlands", "57Fe M\u00f6ssbauer", "Biominerals", "Fe(II)-oxidizing bacteria", "0401 agriculture", " forestry", " and fisheries", "14. Life underwater", "Oxidation-Reduction", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/20.500.11850/529133"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "20.500.11850/529133", "name": "item", "description": "20.500.11850/529133", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20.500.11850/529133"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-04-01T00:00:00Z"}}, {"id": "PMC7672296", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:28:11Z", "type": "Journal Article", "created": "2020-11-11", "title": "The relationship between properties of plant-based biochars and sorption of Cd(II), Pb(II) and Zn(II) in soil model systems", "description": "Plant based biochars are proposed as soil amendments to immobilize potentially toxic trace elements (PTEs), such as Cd(II), Pb(II) and Zn(II) and aid in soil restoration. However, the sorption capacity of biochar for these elements can vary widely depending on biochar nature and metal properties. Currently, there is no clear methodology to pre-screen biochars for their suitability as adsorbents for these elements. Therefore, to facilitate biochar selection for application in soil restoration, this study explored the relationships between the physico-chemical properties of five plant-based biochars and their capacity to immobilize Cd(II), Pb(II) and Zn(II). Batch experiments using synthetic soil pore water were used to assess the sorption of these elements. The sorption isotherms described by the Hill model indicated that PTE sorption capacity followed the order Pb(II) > Cd(II) >Zn(II) regardless of biochar type in mono-element systems. Preferential sorption of Pb(II) limited the immobilization of Cd(II) and Zn(II) in multi-element systems. ATR-FTIR and SEM-EDX spectroscopy studies indicated that Cd(II) and Pb(II) sorption was mediated by complexation with carboxylic groups, cation-\u03c0 interactions and precipitation with phosphates and silicates, while Zn(II) sorption occurred mainly by complexation with phenolic groups and precipitation with phosphates. A high correlation (>0.8) between Electrical Conductivity, Cation Exchange Capacity, pH and sorption capacity was identified for all metals tested, highlighting the electrostatic nature of the sorption mechanisms involved. Biochars derived from herbaceous feedstock were better candidates for remediation of soil polluted with Cd(II), Pb(II) and Zn(II), rather than wood-derived biochar. Overall, this study provides evidence of the direct relationship between specific properties of plant-based biochars (pH and EC) and their suitability as adsorbents for some PTEs in soil systems.", "keywords": ["H1-99", "Trace elements", "Environmental management", "Science (General)", "Soil pore water", "Soil pollution", "0211 other engineering and technologies", "Correlation analysis", "Cooperative sorption", "02 engineering and technology", "15. Life on land", "01 natural sciences", "Environmental pollution", "6. Clean water", "S-shape isotherm", "Social sciences (General)", "Q1-390", "Hill-isotherm", "13. Climate action", "Environmental chemistry", "Soil chemistry", "Research Article", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://eprints.whiterose.ac.uk/168801/1/1-s2.0-S2405844020322313-main.pdf"}, {"href": "https://doi.org/PMC7672296"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Heliyon", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "PMC7672296", "name": "item", "description": "PMC7672296", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/PMC7672296"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-11-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Trace+Elements&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Trace+Elements&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Trace+Elements&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Trace+Elements&offset=16", "hreflang": "en-US"}], "numberMatched": 16, "numberReturned": 16, "distributedFeatures": [], "timeStamp": "2026-07-26T08:13:24.893733Z"}