Enhancement of Fe(III), Co(III), and Cr(VI) reduction at elevated temperatures and by a thermophilic bacterium

被引：52

作者：

Zhang, CL ^{[1
]}

Liu, S ^{[1
]}

Logan, J ^{[1
]}

Mazumder, R ^{[1
]}

Phelps, TJ ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 1996年 / 57-8卷

关键词：

thermophilic bacterium; metal reduction; ferric citrate; Co(III)EDTA; chromate;

D O I：

10.1007/BF02941773

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

An unusual thermophilic bacterium has been isolated from deep subsurface sediments and tested for its ability to enhance Fe(III), Co(III), and Cr(VI) reduction. Without the bacterium, abiotic metal reduction was insignificant at temperatures below 45 degrees C, but became a major process at 75 degrees C. Addition of the bacterium enhanced the reduction of these metals up to fourfold, probably by nonspecific mechanisms. This study demonstrates abiotic and biotic metal reduction under organic-rich thermic conditions, and suggests that thermally and/or biologically enhanced metal reduction may provide an alternative for remediating metal contamination.

引用

页码：923 / 932

页数：10