MICROBIAL TRANSFORMATION OF THIOCYANATE

被引：41

作者：

PARUCHURI, YL ^{[1
]}

SHIVARAMAN, N ^{[1
]}

KUMARAN, P ^{[1
]}

机构：

[1] NATL ENVIRONM ENGN RES INST,NAGPUR 440020,INDIA

来源：

ENVIRONMENTAL POLLUTION | 1990年 / 68卷 / 1-2期

基金：

欧洲研究理事会;

关键词：

D O I：

10.1016/0269-7491(90)90011-Z

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Thiocyanate is present in appreciable concentration in coal carbonization wastewater along with other toxicants like phenols, cyanide, sulphide and ammonia. This paper encompasses studies on biodegradation of thiocyanate by a microbial consortium obtained from a biological treatment plant receiving coal carbonization wastewater. Effects of secondary toxicants and growth stimulants on thiocyanate oxidation by the consortium, and thiocyanate transformation in actual and partially treated coal carbonization waste, have also been studied. Results indicate that the consortium can degrade thiocyanate up to 1400 mg litre-1 in batch culture with 10 mg litre-1 of initial inoculum within a period of 6 days. Phenol above 500 mg litre-1 and cyanide at 10 mg litre-1 completely inhibits thiocyanate oxidation. Sulphide at 32 mg litre-1 and ammonia at 4000 mg litre-1 at neutral pH prolongs thiocyanate oxidation from 3 to 6 days and from 4 to 7.5 days, respectively. These studies reveal that elimination of phenolics, their oxidized products, ammonia, cyanides and sulphides is a pre-requisite for effective thiocyanate removal from the waste by the consortium. Bacteria of the genera Pseudomonas and Bacillus dominate the consortium.

引用

页码：15 / 28

页数：14

共 22 条

[1]

[Anonymous], 1985, STANDARD METHODS EXA

[2]

[Anonymous], 1976, STANDARD METHODS EXA

[3] BIOLOGICAL TREATMENT OF CARBONIZATION EFFLUENTS .2. STUDIES OF INFLUENCE OF LIQUOR COMPOSITION [J].