On wet chemical phosphorus recovery from sewage sludge ash by acidic or alkaline leaching and an optimized combination of both

Water Research
S PetzetP Cornel

Abstract

The advantages and drawbacks of existing wet chemical phosphorus (P) recovery technologies, their applicability to different types of sewage sludge ash (SSA) and the role of the decay products of detergent zeolites as a source of reactive Al in SSA are analyzed. Since neither a purely acidic nor a purely alkaline treatment are able to provide satisfactory technical solutions a wet chemical phosphorus (P) recovery process for sewage sludge ashes (SSAs) is investigated in detail that is based on a sequential treatment of SSA with an acid and a base. As a result of an acidic pre-treatment, the P fraction of the raw SSA that was bound as - alkaline-insoluble - calcium phosphate (Ca-P) is converted into aluminum phosphate (Al-P). This newly formed Al-P can be easily dissolved via alkaline treatment and then easily separated from the alkaline leachate via precipitation of Ca-P. The Al-component can be reused as precipitant for P-removal in waste water treatment plants (WWTPs). The investigated process requires fewer chemicals than the direct acidic dissolution of all P-compounds contained in the SSA. This is due to the described rearrangement of the P component from Ca-P to Al-P. That such a rearrangement of P occurs indeed was confi...Continue Reading

References

Jan 24, 2002·Environmental Technology·W J SchipperA C Lijmbach
Oct 9, 2007·Waste Management·M Franz
Nov 22, 2011·Water Science and Technology : a Journal of the International Association on Water Pollution Research·S PetzetP Cornel

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Citations

Jul 4, 2013·Waste Management·Shane Donatello, Christopher R Cheeseman
Feb 14, 2016·Bioresource Technology·Cédric TarayreFrank Delvigne
Apr 2, 2016·Waste Management·Paula GuedesAlexandra B Ribeiro
May 8, 2015·Environmental Science & Technology·Philipp WilfertMark C M van Loosdrecht
Sep 6, 2014·Water Research·Lingyun JinHuifang Tian
Dec 3, 2014·Bioresource Technology·Nancy Y AcelasA Maarten J Kootstra
Sep 1, 2015·The Science of the Total Environment·Hannes HerzelChristian Adam
Oct 27, 2016·The Science of the Total Environment·Yuanyao YeHui Jia
Mar 10, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·A MarchiV Christine
Nov 22, 2019·Environmental Technology·Katie Charlotte KedwellMorten Lykkegaard Christensen
Apr 6, 2017·Journal of Environmental Quality·Telse VogelBettina Eichler-Löbermann
Jan 14, 2021·Environmental Science & Technology·Yangying ZhaoYongsheng Chen
Oct 28, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Marlena Cristina MoneaAsya Drenkova-Tuhtan
Aug 1, 2020·Journal of Hazardous Materials·Arun Kumar PrabhakarChi-Hwa Wang
Apr 15, 2021·Bioresource Technology·I S A Abeysiriwardana-ArachchigeN Nirmalakhandan
May 8, 2021·Journal of Environmental Management·Tasso Jorge Tavares FerreiraAndré Bezerra Dos Santos

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