Degradation under methanogenic

Many investigators have also shown that toluene can be degraded under methanogenic conditions. The first report of this was that of Warder < / (1980) who measured a 5% 14C02 recovery and some methane from 14C-toluene after a 233-... 

Several investigators have also described efficient MTBE degradation under methanogenic conditions [19]. Several promising field studies are under investigation. 

Degradation under methanogenic conditions and the use of nitrate, sulphate and ferric iron has been shown to a Umited extent [33-38]. Compared to aerobic MTBE degradation, removal rates under anaerobic conditions are extremely slow and long accUmatisation periods are required. It cannot be considered as a feasible remediation option until further research is carried out. 

Carbamates such as Aldicarb undergo degradation under both aerobic and anaerobic conditions. Indeed the oxidation of the sulfur moiety to the sulfoxide and sulfone is part of the activation of the compound to its most potent form. Subsequent aerobic metaboHsm can completely mineralize the compound, although this process is usually relatively slow so that it is an effective iasecticide, acaricide and nematocide. Anaerobically these compounds are hydrolyzed, and then mineralized by methanogens (61). 

Degradation of trichloroethylene by anaerobes via reductive dehalogenation can be problematic because a common product is vinyl chloride, a known carcinogen (Ensley 1991). In an anaerobic colunm operated under methanogenic conditions, 100% transformation of injected tetrachloroethylene and trichloroethylene to... 

Ejlertsson J, Alnervik M, Jonsson S, Svensson BH (1997) Influence of water solubility, side-chain structure on the degradation of phthalic acid esters under methanogenic conditions. Environ Sci Technol 31 2761-2764... 

Mineralization of Dicamba was demonstrated under methanogenic conditions and the degradation pathway elucidated. 

Soil Under aerobic conditions, indigenous microbes in contaminated soil produced pentachlorocyclohexane. However, under methanogenic conditions, a-BHC was converted to chlorobenzene, 3,5-dichlorophenol, and the tentatively identified compound 2,4,5-trichlorophenol (Bachmann et al., 1988). Manonmani et al. (2000) isolated a microbial consortium from sewage and soil that could completely mineralize a-BHC in 14 d at 30 °C. The acclimated consortium could degrade up to 100 mg/L of a-BHC within 72 h at a degradation rate of 58 mg/L-day. 

Biological. After 20 d, methyl mercaptan started to degrade in anaerobic sediments and sludges producing stoichiometric amounts of methane. Complete degradation was achieved after 20 d. Under anaerobic freshwater conditions, methyl mercaptan were degraded by methanogenic archea (van... 

CASRN 118-91-2 molecular formula C7H5CIO2 FW 156.57 Biological. Suflita et al. (1982) reported that 2-chlorobenzoic acid degraded under anaerobic conditions by a stable methanogenic bacterial consortium enriched from sludge. The primary... 

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