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Evaluation of the sustainability of technologies to recover phosphorus from sewage sludge ash based on embodied energy and CO2 footprint

TitleEvaluation of the sustainability of technologies to recover phosphorus from sewage sludge ash based on embodied energy and CO2 footprint
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2021
AuthorsFahimi, A., Federici S., Depero L.E., Valentim B., Vassura I., Ceruti Francesca, Cutaia Laura, and Bontempi E.
JournalJournal of Cleaner Production
Volume289
ISSN09596526
KeywordsCarbon dioxide, Embodied energy, Energy and emissions, Extraction technology, life cycle, Life Cycle Assessment (LCA), Phosphorous recovery, Phosphorus, Screening analysis, Sewage sludge, Sewage sludge ash, Sustainability evaluations, Sustainable development
Abstract

This paper reports a novel and simplified approach for sustainability evaluation of new technologies, based on the use of two parameters (i.e. embodied energy and CO2 footprint) that account for the energy and emissions involved in the formation of a material, suitable to perform pre-screening analysis, preliminary to life cycle assessment. This new approach is presented and used to compare the available technologies for phosphorous recovery from sewage sludge ash. A dimensionless index, defined as SUB-RAW index, is used to compare the results about the environmental impact of each selected substituting material/process. This method is applied to full, pilot, and laboratory scale processes available in literature in the context of phosphorus extraction technologies. The results show that wet chemical leaching approaches appear to be the most sustainable methods. © 2020 Elsevier Ltd

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85098997787&doi=10.1016%2fj.jclepro.2020.125762&partnerID=40&md5=a368ca3aed87b54c288e2cd4625af963
DOI10.1016/j.jclepro.2020.125762
Citation KeyFahimi2021