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Enhanced heavy metals removal without phosphorus loss from anaerobically digested sewage sludge

Ito, A.; Takahashi, K.; Aizawa, J.; Umita, T.

Water Science and Technology a Journal of the International Association on Water Pollution Research 58(1): 201-206

2008

ISSN/ISBN: 0273-1223
PMID: 18653955
DOI: 10.2166/wst.2008.642
Accession: 031250153
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Heavy metals removal without phosphorus loss from anaerobically digested sewage sludge was investigated by conducting batch experiments using hydrogen peroxide and/or iron sulfate under acidified conditions at pH 3. The addition of hydrogen peroxide to the sludge improved the elution efficiencies of As, Cd, Cu and Zn with phosphorus loss from the sludge. The optimum initial concentrations of hydrogen peroxide were. Respectively. 0.1% for As, Cd, Mn and Zn and 0.5% for Cu and Ni.

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