BIODEGRADATION OF MIXED-ORGANIC WASTES BY MICROBIAL CONSORTIA IN CONTINUOUS-RECYCLE EXPANDED-BED BIOREACTORS

被引:25
作者
PHELPS, TJ
NIEDZIELSKI, JJ
MALACHOWSKY, KJ
SCHRAM, RM
HERBES, SE
WHITE, DC
机构
[1] UNIV TENNESSEE,DEPT MICROBIOL,KNOXVILLE,TN 37996
[2] OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831
关键词
D O I
10.1021/es00020a015
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Microbial consortia enriched from subsurface sediments contaminated with chlorinated hydrocarbons proved capable of degrading mixed-organic wastes. Methane and/or propane as foodstock enabled aerobic mineralization of greater than 20 mg L-1 trichloroethylene (TCE) plus 1 mg L-1 vinyl chloride, benzene, and toluene in cell suspension or bioreactor experiments. The microbial consortia degraded 80-95% of TCE at 20 mg L-1 within 5 days in continuous-recycle expanded-bed bioreactors requiring 50-100 mol of food stock/mol of TCE degraded. When the bioreactors were challenged with groundwaters contaminated with mixed-organic wastes, the microbial consortia degraded greater than 99% of the benzene, toluene, xylene, vinyl chloride, and nine chlorinated hydrocarbons, 85% of the TCE, and 60% of the tetrachloroethylene within 21 days, while requiring 80-mu-mol of methane plus propane per micromole of mixed-organic waste degraded. The potential for bioremediation of groundwater contaminated with mixed-organic wastes was demonstrated in laboratory reactors.
引用
收藏
页码:1461 / 1465
页数:5
相关论文
共 18 条
[1]  
ATLAS RM, 1987, MICROBIAL ECOL, P403
[2]   BIOTECHNOLOGY OF PETROLEUM POLLUTANT BIODEGRADATION [J].
BARTHA, R .
MICROBIAL ECOLOGY, 1986, 12 (01) :155-172
[3]   MINERALIZATION OF TRICHLOROETHYLENE BY HETEROTROPHIC ENRICHMENT CULTURES [J].
FLIERMANS, CB ;
PHELPS, TJ ;
RINGELBERG, D ;
MIKELL, AT ;
WHITE, DC .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1988, 54 (07) :1709-1714
[4]  
HENSON JM, 1988, FEMS MICROBIOL ECOL, V53, P193
[5]  
LITTLE CD, 1988, APPL ENVIRON MICROB, V54, P954
[6]   BIODEGRADATION OF TRICHLOROETHYLENE AND INVOLVEMENT OF AN AROMATIC BIODEGRADATIVE PATHWAY [J].
NELSON, MJK ;
MONTGOMERY, SO ;
MAHAFFEY, WR ;
PRITCHARD, PH .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1987, 53 (05) :949-954
[7]   A TOTAL-RECYCLE EXPANDED-BED BIOREACTOR DESIGN WHICH ALLOWS DIRECT HEADSPACE SAMPLING OF VOLATILE CHLORINATED ALIPHATIC-COMPOUNDS [J].
NIEDZIELSKI, JJ ;
SCHRAM, RM ;
PHELPS, TJ ;
HERBES, SE ;
WHITE, DC .
JOURNAL OF MICROBIOLOGICAL METHODS, 1989, 10 (03) :215-223
[8]   MICROBIAL BIOMASS AND ACTIVITIES ASSOCIATED WITH SUBSURFACE ENVIRONMENTS CONTAMINATED WITH CHLORINATED HYDROCARBONS [J].
PHELPS, TJ ;
RINGELBERG, D ;
HEDRICK, D ;
DAVIS, J ;
FLIERMANS, CB ;
WHITE, DC .
GEOMICROBIOLOGY JOURNAL, 1988, 6 (3-4) :157-170
[9]   BIODEGRADATION OF TRICHLOROETHYLENE IN CONTINUOUS-RECYCLE EXPANDED-BED BIOREACTORS [J].
PHELPS, TJ ;
NIEDZIELSKI, JJ ;
SCHRAM, RM ;
HERBES, SE ;
WHITE, DC .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1990, 56 (06) :1702-1709
[10]  
ROBERTS PV, 1989, EPA600289033