• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 25 Issue 1
Mar.  2012
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Article Contents
XU Youze, MA Chao, CHENG Yingxiang, WANG Qiangqiang, ZHONG Zhenyu. Removal of Heavy Metals from Sludge by Bio-leaching[J]. Journal of Southwest Jiaotong University, 2012, 25(1): 169-174. doi: 10.3969/j.issn.0258-2724.2012.021.01.028
Citation: XU Youze, MA Chao, CHENG Yingxiang, WANG Qiangqiang, ZHONG Zhenyu. Removal of Heavy Metals from Sludge by Bio-leaching[J]. Journal of Southwest Jiaotong University, 2012, 25(1): 169-174. doi: 10.3969/j.issn.0258-2724.2012.021.01.028

Removal of Heavy Metals from Sludge by Bio-leaching

doi: 10.3969/j.issn.0258-2724.2012.021.01.028
  • Received Date: 20 Oct 2010
  • Publish Date: 25 Feb 2012
  • In order to reduce the harm of heavy metals in sludge to environment, the effect of medium pH, microorganism inoculation amount, leaching temperature, and cycle leaching time on removal of heavy metals was studied by single factor experiment, and the content change of heavy metals in the process of leaching under the optimal conditions was analyzed. The results show that the leaching liquid pH decreased as the process of removal of heavy metals progresses, and that the optimal medium pH, microorganism inoculation amount, leaching temperature, and cycle leaching time was 1.0, 15.0%, 30 ℃, and 24 h/d, respectively. Under the optimal conditions, the removal rate of Cd, Mn, Cu, Pb, and Zn was 88.0%, 88.0%, 69.0%, 67.0%, and 83.0%, respectively.

     

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