TY - JOUR
T1 - Species, fractions, and characterization of phosphorus in sewage sludge
T2 - A critical review from the perspective of recovery
AU - Yu, Bohan
AU - Luo, Jinghuan
AU - Xie, Huanhuan
AU - Yang, Huan
AU - Chen, Shanping
AU - Liu, Jianyong
AU - Zhang, Ruina
AU - Li, Yu You
N1 - Funding Information:
This study was financially supported by the National Natural Science Foundation of China ( 51778352 ), the Science and Technology Commission of Shanghai Municipality ( 18230710900 ), and the Technology Innovation and Level Promotion Project ( 2008001 ) of Shanghai State-owned Assets Supervision and Administration Commission .
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/10
Y1 - 2021/9/10
N2 - Phosphorus recovery from municipal sewage sludge is a promising way to alleviate the shortage of phosphorus resources. However, the recovery efficiency and cost depend greatly on phosphorus species and fractions in different sewage sludges, i.e., waste activated sludge and chemically enhanced primary sludge. In this review, the phosphorous (sub-)species and fractions in waste activated sludge and chemically enhanced primary sludge are systematically overviewed and compared. The factors affecting phosphorus fractions, including wastewater treatment process, as well as sludge treatment methods and conditions are summarized and discussed; it is found that phosphorus removal method and sludge treatment process are the dominant factors. The characterization methods of phosphorus species and fractions in sewage sludge are reviewed; non-destructive extraction of poly-P and microscopic IP characterization need more attention. Anaerobic fermentation is the preferable solution to achieve advanced phosphorus release both from waste activated sludge and chemically enhanced primary sludge, because it can make phosphorus species and fractions more suitable for recovery. A post low strength acid extraction after anaerobic fermentation is recommended to facilitate phosphorous release and improve the total recovery rate.
AB - Phosphorus recovery from municipal sewage sludge is a promising way to alleviate the shortage of phosphorus resources. However, the recovery efficiency and cost depend greatly on phosphorus species and fractions in different sewage sludges, i.e., waste activated sludge and chemically enhanced primary sludge. In this review, the phosphorous (sub-)species and fractions in waste activated sludge and chemically enhanced primary sludge are systematically overviewed and compared. The factors affecting phosphorus fractions, including wastewater treatment process, as well as sludge treatment methods and conditions are summarized and discussed; it is found that phosphorus removal method and sludge treatment process are the dominant factors. The characterization methods of phosphorus species and fractions in sewage sludge are reviewed; non-destructive extraction of poly-P and microscopic IP characterization need more attention. Anaerobic fermentation is the preferable solution to achieve advanced phosphorus release both from waste activated sludge and chemically enhanced primary sludge, because it can make phosphorus species and fractions more suitable for recovery. A post low strength acid extraction after anaerobic fermentation is recommended to facilitate phosphorous release and improve the total recovery rate.
KW - Characterization
KW - Fractions
KW - Phosphorus recovery
KW - Sewage sludge
KW - Species
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U2 - 10.1016/j.scitotenv.2021.147437
DO - 10.1016/j.scitotenv.2021.147437
M3 - Review article
C2 - 33971595
AN - SCOPUS:85105462209
SN - 0048-9697
VL - 786
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 147437
ER -
