Anaerobic and Aerobic Treatment of Chlorinated Aliphatic Compounds

Long, Jennifer L.; Stensel, H. David; Ferguson, John F.; Strand, Stuart E.; Ongerth, Jerry E.

doi:10.1061/(asce)0733-9372(1993)119:2(300)

Cited by 42 publications

(27 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous reports indicate the degradation of CT and CF in anaerobic bioreactors provided with simple organic electron donating substrates (Bouwer & McCarty 1983;Fathepure & Vogel 1991;Long et al 1993;Boucquey et al 1995). CT was removed at a rate of 11-31 and 19 g m )3 reactor d )1 in methanogenic (Boucquey et al 1995;Jin & Englande 1998;Sponza 2002) and sulfate-reducing (de Best et al 1997a) biofilm reactors, respectively.…”

Section: Degradation Of Higher Chlorinated Methanes In Engineered Sysmentioning

confidence: 98%

“…In an anaerobic CSTR reactor, 1,1-DCA was partially removed. The removal was complete in a sequential anaerobic-aerobic reactor (Long et al 1993). The anaerobe, Desulfitobacterium dichloroeliminans strain DCA1, was successfully used to bioaugment a 1,2-DCA-contaminated groundwater in a laboratory-scale experiment (De Wildeman et al 2004).…”

Section: Degradation Of Lower Chlorinated Ethanes In Engineered Systemsmentioning

confidence: 99%

“…HCA, which was one of the main components of the mixture, was degraded at a rate of 30 g m )3 reactor d )1 . An anaerobic fed-batch reactor completely removed 1,1,1-TCA and HCA (Long et al 1993). Several examples of 1,1,1-TCA and 1,1,2-TCA removal during bioremediation under anaerobic or combined anaerobic-aerobic conditions were reviewed Table 6.…”

Section: Degradation Of Higher Chlorinated Ethanes In Engineered Systemsmentioning

confidence: 99%

“…In an aerobic batch-fed aerobic bioreactor, 1-DCE and tDCE were removed by cooxidation with a mixture of glucose, acetate, benzoate and phenol as primary substrates (Long et al 1993). Likewise cDCE and VC that were detected as intermediates in an anaerobic bioreactor of other higher chlorinated solvents (e.g.…”

Section: Degradation Of Lower Chlorinated Ethenes In Engineered Systemsmentioning

confidence: 99%

See 3 more Smart Citations

Biodegradability of chlorinated solvents and related chlorinated aliphatic compounds

Field

Sierra-Álvarez

2004

Rev Environ Sci Biotechnol

128

View full text Add to dashboard Cite

The biodegradability of chlorinated methanes, chlorinated ethanes, chlorinated ethenes, chlorofluorocarbons (CFCs), chlorinated acetic acids, chlorinated propanoids and chlorinated butadienes was evaluated based on literature data. Evidence for the biodegradation of compounds in all of the compound categories evaluated has been reported. A broad range of chlorinated aliphatic structures are susceptible to biodegradation under a variety of physiological and redox conditions. Microbial biodegradation of a wide variety of chlorinated aliphatic compounds was shown to occur under five physiological conditions. However, any given physiological condition could only act upon a subset of the chlorinated compounds. Firstly, chlorinated compounds are used as an electron donor and carbon source under aerobic conditions. Secondly, chlorinated compounds are cometabolized under aerobic conditions while the microorganisms are growing (or otherwise already have grown) on another primary substrate. Thirdly, chlorinated compounds are also degraded under anaerobic conditions in which they are utilized as an electron donor and carbon source. Fourthly, chlorinated compounds can serve as an electron acceptor to support respiration of anaerobic microorganisms utilizing simple electron donating substrates. Lastly chlorinated compounds are subject to anaerobic cometabolism becoming biotransformed while the microorganisms grow on other primary substrate or electron acceptor. The literature survey demonstrates that, in many cases, chlorinated compounds are completely mineralised to benign end products. Additionally, biodegradation can occur rapidly. Growth rates exceeding 1 d )1 were observed for many compounds. Most compound categories include chlorinated structures that are used to support microbial growth. Growth can be due to the use of the chlorinated compound as an electron donor or alternatively to the use of the chlorinated compound as an electron acceptor (halorespiration). Biodegradation linked to growth is important, since under such conditions, rates of degradation will increase as the microbial population (biocatalyst) increases. Combinations of redox conditions are favorable for the biodegradation of highly chlorinated structures that are recalcitrant to degradation under aerobic conditions. However, under anaerobic conditions, highly chlorinated structures are partially dehalogenated to lower chlorinated counterparts. The lower chlorinated compounds are subsequently more readily mineralized under aerobic conditions.Abbreviations: A

show abstract

Section: Degradation Of Higher Chlorinated Methanes In Engineered Sysmentioning

confidence: 98%

Section: Degradation Of Lower Chlorinated Ethanes In Engineered Systemsmentioning

confidence: 99%

Section: Degradation Of Higher Chlorinated Ethanes In Engineered Systemsmentioning

confidence: 99%

Section: Degradation Of Lower Chlorinated Ethenes In Engineered Systemsmentioning

confidence: 99%

See 2 more Smart Citations

Biodegradability of chlorinated solvents and related chlorinated aliphatic compounds

Field

Sierra-Álvarez

2004

Rev Environ Sci Biotechnol

128

View full text Add to dashboard Cite

show abstract

“…The methanotrophic microorganisms grow aerobically by oxidizing methane as both the carbon and energy source [9]. One of the important degradation parameters is the biokinetic constant.…”

mentioning

confidence: 99%

The Development of a Prediction Model for the Kinetic Constant of Chlorinated Aliphatic Hydrocarbons

Kim

Lee

2007

Environ Model Assess

View full text Add to dashboard Cite

Kinetic constants are important design parameters to determine the degradation of a substrate in biological treatment systems. The objective of this study was to develop a regression model using a quantitative structure-activity relationship technique for the prediction of the first-order rate constants (k) of chlorinated aliphatic hydrocarbons (CAHs). The prediction model showed very good correlations between the measured and calculated rate constants of CAHs. It was likely that the higher-order connectivity indices were important factors for the prediction of the kinetic constants, implying more complicated connectivity indices contributed to the prediction of a biological property. This technique would provide a useful tool to establish the kinetics of other CAHs without costly or time-consuming tests.

show abstract

Long-term impact of dissolved O2 on the activity of anaerobic granules

Shen

Guiot

2000

Biotechnol. Bioeng.

View full text Add to dashboard Cite

Anaerobic and Aerobic Treatment of Chlorinated Aliphatic Compounds

Cited by 42 publications

References 28 publications

Biodegradability of chlorinated solvents and related chlorinated aliphatic compounds

Biodegradability of chlorinated solvents and related chlorinated aliphatic compounds

The Development of a Prediction Model for the Kinetic Constant of Chlorinated Aliphatic Hydrocarbons

Long-term impact of dissolved O2 on the activity of anaerobic granules

Contact Info

Product

Resources

About