{"type": "FeatureCollection", "features": [{"id": "10.1016/j.resconrec.2022.106325", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:50Z", "type": "Journal Article", "created": "2022-04-14", "title": "Life cycle assessment of struvite recovery and wastewater sludge end-use: A Flemish illustration", "description": "Phosphate rock (PR) has been designated as a Critical Raw Material in the European Union (EU). This has led to increased emphasis on alternative P recovery (APR) from secondary streams like wastewater sludge (WWS). However, WWS end-use is a contentious topic, and EU member states prefer different end-use pathways (land application/incineration/valorisation in cement kilns). Previous Life Cycle Assessments (LCA) on APRs from WWS reached contrasting conclusions; while most considered WWS as waste and highlighted a net benefit relative to PR mining and beneficiation, others viewed WWS as a resource and highlighted a net burden of the treatment. We used a combined functional unit (that views WWS from a waste as well as a resource perspective) and applied it on a Flemish wastewater treatment plant (WWTP) with struvite recovery as APR technology. Firstly, a retrospective comparison was performed to measure the WWTP performance before and after struvite recovery and the analysis was complemented by uncertainty and global sensitivity analyses. The results showed struvite recovery provides marginal environmental benefits due to improved WWS dewatering and reduced polymer use. Secondly, a prospective LCA approach was performed to reflect policy changes regarding WWS end-use options in Flanders. Results indicated complete mono-incineration of WWS, ash processing to recover P and the subsequent land application appears to be less sustainable in terms of climate change, human toxicity, and terrestrial acidification relative to the status quo, i.e., co-incineration with municipal solid waste and valorisation at cement kilns. Impacts on fossil depletion, however, favour mono-incineration over the status quo.", "keywords": ["BURDENS", "PHOSPHORUS RECOVERY", "Wastewater sludge treatment", "LCA", "SEWAGE-SLUDGE", "GLOBAL SENSITIVITY-ANALYSIS", "PRODUCT", "7. Clean energy", "01 natural sciences", "ENVIRONMENTAL IMPACTS", "6. Clean water", "12. Responsible consumption", "Global sensitivity analysis", "Phosphorus recovery", "Prospective LCA", " Global sensitivity analysis", "13. Climate action", "Earth and Environmental Sciences", "Full Length Article", "BENEFITS", "11. Sustainability", "SHIFT", "Prospective LCA", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.resconrec.2022.106325"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Resources%2C%20Conservation%20and%20Recycling", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.resconrec.2022.106325", "name": "item", "description": "10.1016/j.resconrec.2022.106325", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.resconrec.2022.106325"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-07-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2019.114932", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:24Z", "type": "Journal Article", "created": "2019-07-30", "title": "Assessing practical identifiability during calibration and cross-validation of a structured model for high-solids anaerobic digestion", "description": "High-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW) is operated at a total solid (TS) content\u202f\u2265\u202f10% to enhance the waste treatment economy, though it might be associated to free ammonia (NH3) inhibition. This study aimed to calibrate and cross-validate a HS-AD model for homogenized reactors in order to assess the effects of high NH3 levels in HS-AD of OFMSW, but also to evaluate the suitability of the reversible non-competitive inhibition function to reproduce the effect of NH3 on the main acetogenic and methanogenic populations. The practical identifiability of structural/biochemical parameters (i.e. 35) and initial conditions (i.e. 32) was evaluated using batch experiments at different TS and/or inoculum-to-substrate ratios. Variance-based global sensitivity analysis and approximate Bayesian computation were used for parameter optimization. The experimental data in this study permitted to estimate up to 8 biochemical parameters, whereas the rest of parameters and biomass contents were poorly identifiable. The study also showed the relatively high levels of NH3 (i.e. up to 2.3\u202fg\u202fN/L) and ionic strength (i.e. up to 0.9\u202fM) when increasing TS in HS-AD of OFMSW. However, the NH3 non-competitive function was unable to capture the acetogenic/methanogenic inhibition. Therefore, the calibration emphasized the need for target-oriented experimental data to enhance the practical identifiability and the predictive capabilities of structured HS-AD models, but also the need for further testing the NH3 inhibition function used in these simulations.", "keywords": ["[SDE] Environmental Sciences", "[SDV]Life Sciences [q-bio]", "0207 environmental engineering", "high-solids anaerobic digestion model", "Bayes Theorem", "02 engineering and technology", "Solid Waste", "01 natural sciences", "7. Clean energy", "6. Clean water", "Refuse Disposal", "12. 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