您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 4    August 2006

[PDF Download]    [Flash Online]

    

Ferrous ion oxidation by Thiobacillus ferrooxidans immobilized on activated carbon
ZHOU Ji-kui(周吉奎)1, QIN Wen-qing(覃文庆)2,
NIU Yin-jian(钮因健)2, LI Hua-xia(李花霞)1

1. Zhengzhou Research Institute of CHALCO, Zhengzhou 450041, China;
2. School of Resources Processing and Bioengineering, Central South University,
Changsha 410083, China

Abstract: The immobilization of Thiobacillus ferrooxidans on the activated carbon particles as support matrix was investigated. Cycling batch operation results in the complete oxidation of ferrous iron in 8 d when the modified 9 K medium is set to flow through the mini-bioreactor at a rate of 0.104 L/h at 25 ℃. The oxidation rate of ferrous iron with immobilized T. ferrooxidans is 9.38 g/(L•h). The results show that the immobilization of T. ferrooxidans on activated carbon can improve the rate of oxidation of ferrous iron. The SEM images show that a build-up of cells of T. ferrooxidans and iron precipitates is formed on the surface of activated carbon particles.

 

Key words: Thiobacillus ferrooxidans; immobilization; activated carbon; biooxidation; precipitate; bioreactor

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn