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Articles by Duanwei Zhu
Total Records ( 1 ) for Duanwei Zhu
  Jianbo Cai , G. Liu , Ye Tuo , Wei Liu and Duanwei Zhu
  In this study, aerobic granular sludge was utilized as an effective biosorbent to remove Zn2+ from the aqueous solution. The results showed that the initial pH, contact time and Zn2+ concentration affected the biosorption process significantly. Typically, the adsorption capacity of Zn2+ by aerobic granular sludge increased with increasing pH in the ranges of 5.0-7.0 and decreased with increasing of pH in the ranges of 7.0-9.0, which indicated that pH at 7.0 was optimal choice for the Zn2+ adsorption by the aerobic granular sludge. The maximum removal of Zn2+ at pH 7.0 was found to be 131.47 mg g-1 at initial Zn2+ ion concentration of 120 mg L-1 by the aerobic granular sludge. In addition, the adsorption ability of two kind of anaerobic granular sludge from different reaction stage at one reactor for Zn2+ remove was compared. It was founded that the anaerobic granular sludge from the end of aerobic stage had better adsorption ability than that from the end of anaerobic stage, which could be attributed to be the species and quantity of microbial in the aerobic granular sludge.
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