학술논문
Solubilization profiles of metal ions from bioleaching of sewage sludge as a function of pH
Document Type
Academic Journal
Author
Source
Biotechnology Letters. April, 2002, Vol. 24 Issue 7, p611, 4 p.
Subject
Language
English
ISSN
0141-5492
Abstract
Two patterns of solubilization of metal ions resulting from bioleaching of sewage sludge by sulphur-oxidizing Thiobacillus spp. were established as a function of pH. Chromium and copper ions required a pH of 2--3 to initiate their solubilization, whereas nickel and zinc ions had their solubilization initiated at pH 6--6.5. The patterns obtained were independent of the sludge solids concentrations investigated (10, 17, 25, 32.5 and 40 g l.sup.-1).