Potential of phosphorus recovery from sewage sludge and manure ash by thermochemical treatment

Waste Management
Jouni HavukainenLassi Linnanen

Abstract

All life forms require phosphorus (P), which has no substitute in food production. The risk of phosphorus loss from soil and limited P rock reserves has led to the development of recycling P from industrial residues. This study investigates the potential of phosphorus recovery from sewage sludge and manure ash by thermochemical treatment (ASH DEC) in Finland. An ASH DEC plant could receive 46-76 kt/a of sewage sludge ash to produce 51-85 kt/a of a P-rich product with a P2O5 content of 13-18%, while 320-750 kt/a of manure ash could be supplied to produce 350-830 kt/a of a P-rich product with a P content of 4-5%. The P2O5 potential in the total P-rich product from the ASH DEC process using sewage sludge and manure ash is estimated to be 25-47 kt/a, which is significantly more than the P fertilizer demand in Finland's agricultural industries. The energy efficiency of integrated incineration and the ASH DEC process is more dependent on the total solid content and the subsequent need for mechanical dewatering and thermal drying than on the energy required by the ASH DEC process. According to the results of this study, the treated sewage sludge and manure ash using the ASH DEC process represent significant potential phosphorus source...Continue Reading

References

Mar 6, 2009·Bioresource Technology·J Lundgren, E Pettersson
Oct 9, 2009·Nature·Natasha Gilbert
Jan 22, 2010·Waste Management·G QuirogaE Marañón
Aug 9, 2011·Environmental Science & Technology·Christian Vogel, Christian Adam

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Citations

Apr 18, 2017·Environmental Technology·Kati MustonenMika Horttanainen
Jan 11, 2020·Environmental Science and Pollution Research International·Sara ZangariniFabrizio Adani
Feb 4, 2021·Environmental Science and Pollution Research International·Qiang LiuWeimin Cao
Jun 23, 2021·Environmental Science and Pollution Research International·Yunfeng XuGuangren Qian
Nov 7, 2021·Environmental Science and Pollution Research International·Ramesh PoornimaSelvaraj Paul Sebastian

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