
	Journal of Applied Sciences
	Year: 2014 \| Volume: 14 \| Issue: 8 \| Page No.: 833-837 DOI: 10.3923/jas.2014.833.837

Zinc (II) Removal from Aqueous Solution by Biosorption with Aerobic Granular Sludge

Jianbo Cai, G. Liu, Ye Tuo, Wei Liu and Duanwei Zhu

Abstract: 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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How to cite this article:

Jianbo Cai, G. Liu, Ye Tuo, Wei Liu and Duanwei Zhu, 2014. Zinc (II) Removal from Aqueous Solution by Biosorption with Aerobic Granular Sludge. Journal of Applied Sciences, 14: 833-837.

DOI: 10.3923/jas.2014.833.837

URL: https://scialert.net/abstract/?doi=jas.2014.833.837

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