华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (9): 73-76.

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烟束曲霉HLS-6的筛选及其对cr(VI)的吸附特性

胡勇有 刘铁梅   

  1. 华南理工大学 环境科学与工程学院,广东 广州 510640
  • 收稿日期:2004-11-23 出版日期:2005-09-25 发布日期:2005-09-25
  • 通信作者: 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
  • 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
  • 基金资助:

    广州市环境保护局资助项目(穗计[006])

Screening and Adsorptivity to Cr(VI)of Aspe Fumisynnematus Strain HLS-6

Hu yong-you  Liu Tie-mei   

  1. College of Environmental Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-11-23 Online:2005-09-25 Published:2005-09-25
  • Contact: 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
  • About author: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
  • Supported by:

    广州市环境保护局资助项目(穗计[006])

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)吸附效率高的茵株——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:"-3 Cr(VI)初始质量浓度分别为9.42和91.7 mg/L时,HLS-6在48 h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;吸附茵在茵龄为3~5 d时对Cr(VI)的吸附率最大.

关键词: 烟束曲霉, 筛选, 重金属, 生物吸附

Abstract:

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 investi-gated,with the results shown below:(1)theadsorptive 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 ofCr(VI)is 9.42 or91.7mg/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 eficiency for Cr(VI).

Key words: Aspergillus fumisynnematus, screening, heavy metal, biosorption