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

• 基础研究 • 上一篇    下一篇

固定化啤酒废酵母吸附Cr6+ 的特性研究

武 运,刘永建,葛 风,田永刚,魏倩芸,古丽娜孜   

  1. 新疆农业大学食品科学学学院
  • 收稿日期:2010-07-01 出版日期:2010-10-15 发布日期:2010-12-29
  • 通讯作者: 武运 E-mail:wuyunster@sina.com
  • 基金资助:

    新疆教育厅高校科研重点项目(XJEDU2008I60);新疆农业大学紧缺人才专业大学生创新项目

Biosorption of Cr6+ by Immobilized Waste Beer Yeast Biomass

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

  1. 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

摘要:

用啤酒废酵母作吸附剂,以海藻酸钠作包埋剂将酵母固定化制作成小球,分别从吸附时间、温度、酵母小球用量、Cr6+ 溶液质量浓度、pH 值等因素,研究啤酒废酵母菌体对Cr6+ 的吸附特性。确定固定化啤酒废酵母对Cr6+ 吸附的最佳条件为:吸附时间1.5h、温度15℃、酵母小球用量3g/20mL、Cr6+ 溶液质量浓度40mg/L、pH值为3。在该条件下,对Cr6+ 最大吸附率为27.6%,最大吸附量为10.8mg/g。其中pH 值、Cr6+ 溶液质量浓度、酵母小球用量3 个因素对Cr6+ 吸附特性影响较大,其余因素影响较小。

关键词: 啤酒废酵母, 固定化, 吸附, Cr6+

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+

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