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- W3162451381 endingPage "100417" @default.
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- W3162451381 abstract "In this study, three types of sludge-derived biochars (BC1, BC2 and BC3) were prepared by 1) original sludge, 2) sludge after K2FeO4 conditioning, and 3) sludge after acidification + K2FeO4 conditioning. The results show that the biochar prepared from the conditioned sludge has additional functional groups, and its Pb2+ removal effect is greatly enhanced. The concentration of Pb2+ in the effluent can be reduced to <0.06 μg/L. The original sludge-derived biochar can only remove at most 58.02% of Pb2+. The maximum adsorption capacity of BC3 is six times greater than that of BC1. The ion exchange effect of Ca2+ and Mg2+ on the biochar surface and the complexation of free -OH or -COOH functional groups lead to an excellent adsorption effect on Pb2+. The sludge-derived biochar prepared after the conditioning of K2FeO4 can realize efficient removal of Pb2+, providing new initiatives for subsequent sludge resource utilization." @default.
- W3162451381 created "2021-05-24" @default.
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- W3162451381 date "2021-05-01" @default.
- W3162451381 modified "2023-10-17" @default.
- W3162451381 title "Preparation of a novel sludge-derived biochar by K2FeO4 conditioning to enhance the removal of Pb2+" @default.
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- W3162451381 doi "https://doi.org/10.1016/j.colcom.2021.100417" @default.
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