Chromium(VI) reduction in a membrane bioreactor with immobilized Pseudomonas cells

被引：81

作者：

Konovalova, VV

Dmytrenko, GM

Nigmatullin, RR

Bryk, MT

Gvozdyak, PI

机构：

[1] Univ Coll Swansea, Dept Chem & Biol Proc Engn, Swansea SA2 8PP, W Glam, Wales

[2] Inst Colloid & Water Chem, Dept Microbiol Wastewater Treatment, UA-03142 Kiev, Ukraine

[3] Natl Univ Kyiv Mohyla Acad, Dept Chem, UA-04070 Kiev, Ukraine

来源：

ENZYME AND MICROBIAL TECHNOLOGY | 2003年 / 33卷 / 07期

关键词：

membrane bioreactor; bioremediation; chromate reduction; immobilized cell; membrane; diffusion;

D O I：

10.1016/S0141-0229(03)00204-7

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Chromate reduction was studied in a membrane bioreactor under action of Pseudomonas bacteria immobilized in agar-agar films on the surface of synthetic membrane. Immobilized cells are protected from the excessive toxic action at high chromate concentration that improves cell activity compared with free cells. Almost complete chromate reduction was observed at stepwise introducing of chromate in feed solution allowing maintenance of optimal chromate concentration. Reduction is suppressed by high metabolite concentrations, which reached on the sixth step of chromate adding in studied system. Cell ability to reduce chromate is restored after changing of feed and receiving solutions allowing remediation of Cr(VI)-contaminated water in semi-batch operation of membrane bioreactor. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：899 / 907

页数：9

共 14 条

[1] Biofilm development in a membrane-aerated biofilm reactor: effect of intra-membrane oxygen pressure on performance [J].