微生物发酵米糠对Cr^(6+)的吸附性能研究  

The Absorption of Cr^(6+) in Wastewater by Microbial Fermentation of Rice Bran

作　　者：盛姣[1] 冯贤 曾桂华[1] 郭海彦[1] 

机构地区：[1]长沙环境保护职业技术学院,湖南长沙410004 [2]广西玉林出入境检验检疫局,广西玉林537000

出　　处：《绿色科技》2011年第10期90-92,共3页Journal of Green Science and Technology

摘　　要：研究了微生物发酵米糠的用量、溶液温度、Cr6+浓度、溶液pH值和吸附时间对微生物发酵米糠吸附Cr6+性能的影响。实验结果表明:微生物发酵米糠对Cr6+具有很好的吸附效果,吸附率达95.7%。其最佳吸附条件为微生物发酵米糠用量10g/L,温度60℃,pH值为2,Cr6+质量浓度低于40mg/L,吸附时间40min。该吸附行为符合Freundlich吸附等温方程,吸附过程符合二级动力学模型。The paper discusses the effects of the dosage of microbial fermentation of rice bran,solution temperature,cadmium concentration,pH value,and the adsorption time to microbial fermentation of rice bran adsorb Cr^6＋ in water. The results show：microbial fermentation of rice bran have good adsorption to Cr^6＋ , the rate of adsorption is above 80 %. Its best adsorption conditions is that the dosage of microbial fermentation of rice bran is 10 g/L,solution temperature is 28℃,pH is 4,Cr^6＋ Concentration is below 30 mg/L,adsorption time is 30 min.

关 键 词：微生物发酵米糠 铬离子 吸附 

分 类 号：TQ920.1[轻工技术与工程—发酵工程]