BIOFILM CONCENTRATION OF CHROMIUM

被引:18
作者
COLEMAN, RN
PARAN, JH
机构
[1] Microbiology Branch, Chemistry Division, Alberta Environmental Centre, Vegreville, AB
关键词
D O I
10.1080/09593339109385109
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Removal of chromium from synthetic waste streams was studied using biofilms that developed on disks of a laboratory scale Rotating Biodisk Contactor (RBC). During its development the biofilm was continuously exposed to various concentrations of potassium dichromate. Chromium removal efficiency was about 98% during steady state addition of chromium (VI) at concentrations of 100 or 200 mg l-1. Analysis of the major soluble chromium ions demonstrated that chromium (VI) was first reduced to chromium (III) which then appeared to be adsorbed by the biofilm. Chromium levels associated with the biofilm were found (by chemical analysis) to be 6.5-7.0% of its dried weight.
引用
收藏
页码:1079 / 1093
页数:15
相关论文
共 18 条
[1]  
BARTLETT RJ, 1988, ENVIRON SCI TECHNOL, V20, P267
[2]  
BESZEDITS S, 1988, ENVIRON SCI TECHNOL, V20, P231
[3]  
BHATNAGAR R, 1984, 42ND P ANN M EL MICR, P680
[4]   ACCUMULATION OF HEXAVALENT CHROMIUM BY SELECTED BACTERIA [J].
COLEMAN, RN ;
PARAN, JH .
ENVIRONMENTAL TECHNOLOGY LETTERS, 1983, 4 (04) :149-156
[5]  
COLEMAN RN, 1988, ENVIRON SCI TECHNOL, V20, P335
[6]  
COLEMAN RN, 1989, AUG BIOH 89 C P JACK
[7]  
DIEKEN FP, 1981, METHODS MANUAL CHEM
[9]  
FISHBEIN L, 1980, MAR P WORKSH C ROL M
[10]   DETERMINATION OF FREE AMINO GROUPS IN PROTEINS BY TRINITROBENZENESULFONIC ACID [J].
HABEEB, AFS .
ANALYTICAL BIOCHEMISTRY, 1966, 14 (03) :328-&