摘要
采用富集培养方法从某下水道污泥中筛选到一株对重金属Cr(Ⅵ)吸附效率高的菌株--烟束曲霉HLS-6,考察了pH值、温度和Cr(Ⅵ)初始质量浓度对HLS-6吸附Cr(Ⅵ)的影响.结果表明,在pH为1～2、温度为25～30℃时,吸附率高达96.7%;Cr(Ⅵ)初始质量浓度增加,吸附容量增大,但吸附率减小:当Cr(Ⅵ)初始质量浓度分别为9.42和91.7mg/L时,HLS-6在48h内对Cr(Ⅵ)的吸附率分别为100%和50.8%,吸附容量分别为4.9和23.3 mg/g;吸附菌在菌龄为3～5 d时对Cr(Ⅵ)的吸附率最大.
One Aspergillus fumisynnematus strain HLS-6 with excellent adsorptive efficiency to the heavy metal Cr（ Ⅵ） was screened from the sludge in a certain cloacae by means of enrichment cultivation. The influence of pH, temperature and initial mass concentration of Cr（ Ⅵ ） on the adsorption of Cr（ Ⅵ ） by HLS-6 was then investigated, with the results shown below： （1） the adsorptive efficiency achieves 96.7% at 25 -30 ℃ when the pH value is 1 -2, （2） with the increase in initial mass concentration of Cr （ Ⅵ ）, the adsorptive capacity increases, while the adsorptive efficiency decreases, （3） when the initial mass concentration of Cr（Ⅵ ） is 9.42 or 91.7 mg/L, the adsorptive efficiency reaches 100% or 50.8% in 48h, and the adsorptive capacity reaches 4.9 or 23.3 mg/g, and （4） with a strain age of 3 -5 d, HLS-6 is of the greatest adsorptive efficiency for Cr（Ⅵ ）.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第9期73-76,共4页
Journal of South China University of Technology(Natural Science Edition)
基金
广州市环境保护局资助项目(穗计[006])
关键词
烟束曲霉
筛选
重金属
生物吸附
AspergiUus fumisynnematus
screening
heavy metal
biosorption
作者简介
胡勇有（1964-）,男,教授,博士生导师,主要从事水污染控制技术方面的研究.E-mail：ppyyhu@scut.edu.cn
