Environmental and resource implications of phosphorus recovery from waste activated sludge

Waste Management
Birgitte Lilholt SørensenKomal Habib

Abstract

Phosphorus is an essential mineral resource for the growth of crops and thus necessary to feed the ever increasing global population. The essentiality and irreplaceability of phosphorus in food production has raised the concerns regarding the long-term phosphorus availability and the resulting food supply issues in the future. Hence, the recovery of phosphorus from waste activated sludge and other waste streams is getting huge attention as a viable solution to tackle the potential availability issues of phosphorus in the future. This study explores the environmental implications of phosphorus recovery from waste activated sludge in Denmark and further elaborates on the potential availability or scarcity issue of phosphorus today and 2050. Life cycle assessment is used to assess the possibility of phosphorus recovery with little or no environmental impacts compared to the conventional mining. The phosphorus recovery method assessed in this study consists of drying process, and thermal gasification of the waste activated sludge followed by extraction of phosphorus from the ashes. Our results indicate that the environmental impacts of phosphorus recovery in an energy efficient process are comparable to the environmental effects fr...Continue Reading

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Sep 28, 2015·Bioresource Technology·Li-Ying HuangJuin-Yih Lai
Oct 30, 2016·Journal of Environmental Management·C SilvaM J Rosa
Nov 28, 2019·Environmental Science and Pollution Research International·Marilys PradelLynda Aissani
Oct 24, 2018·Environmental Science and Pollution Research International·Chao WangYuxiang Mao
Jan 11, 2020·Environmental Science and Pollution Research International·Sara ZangariniFabrizio Adani
Feb 2, 2020·Water Research·Ka Leung LamJan Peter van der Hoek
Apr 21, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Casey Bryant, Erik R Coats
Jun 23, 2021·Environmental Science and Pollution Research International·Yunfeng XuGuangren Qian

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