Please use this identifier to cite or link to this item:
|Title:||Evaluation of biodegradation potential of carbon tetrachloride and chlorophenols under acidogenic condition|
|Citation:||Mun, C.H., Ng, W.J., He, J. (2008). Evaluation of biodegradation potential of carbon tetrachloride and chlorophenols under acidogenic condition. Journal of Environmental Engineering 134 (3) : 177-183. ScholarBank@NUS Repository. https://doi.org/10.1061/(ASCE)0733-9372(2008)134:3(177)|
|Abstract:||Biodegradability of chlorinated aliphatic (carbon tetrachloride) and aromatic (chlorophenol) compounds under acidogenic condition was investigated at pH of 5.0 to 5.5. Batch tests were used to evaluate biodegradability, adsorption capacity, and inhibitory effects of the chlorinated compounds on the fermentative microbial consortium. The biodegradability of carbon tetrachloride differed from that of the chlorophenols tested. Carbon tetrachloride was degraded to dichloromethane, and its adsorption onto the biomass was minimal. Inhibition of the acidogenic process was not observed for carbon tetrachloride at 10 mgL. Chlorophenols (penta, tri, di, and mono) were not degraded at all, even after addition of vitamin supplements, increased incubation time, and increased primary to secondary substrate ratio. Chlorophenol removed from the aqueous phase by adsorption can be recovered from the acidogenic sludge. Pentachlorophenol was inhibitory to the acidogenic culture, whereas 2-chlorophenol was not. Microbial community analysis revealed the bacteria therein were primarily rumen and enteric bacteria. The results showed that it is possible to dechlorinate at least an aliphatic chlorinated compound under acidogenic conditions. © 2008 ASCE.|
|Source Title:||Journal of Environmental Engineering|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 17, 2018
WEB OF SCIENCETM
checked on Oct 9, 2018
checked on Oct 13, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.