Biosorption of Cr6+ by Immobilized Waste Beer Yeast Biomass

doi:10.7506/spkx1002-6630-201019042

FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (19): 194-196.doi: 10.7506/spkx1002-6630-201019042

• Basic Research • Previous Articles Next Articles

Biosorption of Cr6+ by Immobilized Waste Beer Yeast Biomass

WU Yun，LIU Yong-jian，GE Feng，TIAN Yong-gang，WEI Qian-yun，GU Linazi

College of Food Science, Xinjiang Agricultural University, Urumqi 830052, China

Received:2010-07-01 Online:2010-10-15 Published:2010-12-29
Contact: WU Yun E-mail:wuyunster@sina.com

Abstract

Abstract:

Waste beer yeast was embedded into sodium alginate based spheres for providing a bioadsorbent for industrial wastewater treatment. The effects of length of adsorption time, temperature, adsorbent amount, Cr6+ concentration and pH on Cr6+ adsorption ratio were examined. The optimal adsorption conditions were determined as follows: length of adsorption time 1 h; temperature 15 ℃; adsorbent amount 3 g/20 mL; Cr6+ concentration 40 mg/L; and pH 3. Under these conditions, the maximum adsorption ratio was 27.6%, and the maximum adsorption quantity was 10.8 mg/g. pH, Cr6+ concentration and adsorbent amount had larger effect on Cr6+ adsorption than two other factors.

Key words: waste beer yeast, immobilization, biosorption, Cr6+

CLC Number:

X703

WU Yun，LIU Yong-jian，GE Feng，TIAN Yong-gang，WEI Qian-yun，GU Linazi. Biosorption of Cr6+ by Immobilized Waste Beer Yeast Biomass[J]. FOOD SCIENCE, 2010, 31(19): 194-196.

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Biosorption of Cr6+ by Immobilized Waste Beer Yeast Biomass

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