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Recovery of Zinc from Wastewater Treatment Sludge.

Authors
Stephenson-JB; Cole-ER; Paulson-DL
Source
Res and Conservation 1981 Nov; 6(3-4):203-210
Link
NIOSHTIC No.
10006811
Abstract
Preliminary laboratory work done under a Memorandum of Agreement between the Bureau of Mines Rolla Research Center and the Harrison Radiator Div., General Motors, Corp., has indicated that zinc can be recovered from wastewater treatment sludges generated at the harrison plant at Lockport, New York the method developed at the Rolla Research Center, Rolla, Missouri, for extracting zinc from the sludge involves roasting, leaching-purification, and electrowinning. Roasting to combust the organic fraction and leaching with h2so4 to stabilize the zinc proceeded routinely. Purification and electrowinning followed standard practice for a commercial zinc electrowinning plant, but because of the large amounts of delecterious impurities coextracted with the zinc, as much as 50 times greater than normally encountered in a commercial operation, an extensive modification of the purification procedure was necessary. Zinc was electrowon with good current efficiency and deposit morphology. Residues are being characterized to determine the feasibility of recovering valuable constituents prior to disposal in an environmentally acceptable manner.
Publication Date
19811101
Document Type
OP;
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
OP 56-81
Issue of Publication
3-4
NIOSH Division
RORC;
Source Name
Res. and Conservation, V.6, No. 3-4, November 1981, PP. 203-210
State
MO; NY;
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