The aerobic degradation of dichloromethane: Structural-functional aspects (a review)

Trotsenko, Yu. A.; Torgonskaya, M. L.

doi:10.1134/s0003683809030016

Cited by 12 publications

(3 citation statements)

References 134 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These compounds are highly toxic, mutagenic, and carcinogenic. Therefore, halomethanes can be considered as important environmental pollutants ( 3 ).…”

Section: Introductionmentioning

confidence: 99%

Rapid Quantitative Estimation of Chlorinated Methane Utilizing Bacteria in Drinking Water and the Effect of Nanosilver on Biodegradation of the Trichloromethane in the Environment

Zamani

Bouzari

Emtiazi

et al. 2015

Jundishapur J Microbiol

View full text Add to dashboard Cite

Background:Halomethanes are toxic and carcinogenic chemicals, which are widely used in industry. Also they can be formed during water disinfection by chlorine. Biodegradation by methylotrophs is the most important way to remove these pollutants from the environment.Objectives:This study aimed to represent a simple and rapid method for quantitative study of halomethanes utilizing bacteria in drinking water and also a method to facilitate the biodegradation of these compounds in the environment compared to cometabolism.Materials and Methods:Enumeration of chlorinated methane utilizing bacteria in drinking water was carried out by most probable number (MPN) method in two steps. First, the presence and the number of methylotroph bacteria were confirmed on methanol-containing medium. Then, utilization of dichloromethane was determined by measuring the released chloride after the addition of 0.04 mol/L of it to the growth medium. Also, the effect of nanosilver particles on biodegradation of multiple chlorinated methanes was studied by bacterial growth on Bushnell-Haas Broth containing chloroform (trichloromethane) that was treated with 0.2 ppm nanosilver.Results:Most probable number of methylotrophs and chlorinated methane utilizing bacteria in tested drinking water were 10 and 4 MPN Index/L, respectively. Chloroform treatment by nanosilver leads to dechlorination and the production of formaldehyde. The highest growth of bacteria and formic acid production were observed in the tubes containing 1% chloroform treated with nanosilver.Conclusions:By combining the two tests, a rapid approach to estimation of most probable number of chlorinated methane utilizing bacteria is introduced. Treatment by nanosilver particles was resulted in the easier and faster biodegradation of chloroform by bacteria. Thus, degradation of these chlorinated compounds is more efficient compared to cometabolism.

show abstract

“…These compounds are highly toxic, mutagenic, and carcinogenic. Therefore, halomethanes can be considered as important environmental pollutants ( 3 ).…”

Section: Introductionmentioning

confidence: 99%

Rapid Quantitative Estimation of Chlorinated Methane Utilizing Bacteria in Drinking Water and the Effect of Nanosilver on Biodegradation of the Trichloromethane in the Environment

Zamani

Bouzari

Emtiazi

et al. 2015

Jundishapur J Microbiol

View full text Add to dashboard Cite

show abstract

“…The HPLC system was operated with a Shim-pack SCR column 300 mm 7.9 mm id; Shim-pack SCR-102H . A 100 μL aliquot of analyte was loaded and eluted isocratically using 5 mM p-toluenesulfonate pH 2.7 at a flow rate of 0.8 mL min 1 . The oven temperature was 40 .…”

Section: Analytical Proceduresmentioning

confidence: 99%

“…Dichloromethane DCM is a representative chlorinated compound that has been used as a washing agent for cleaning oils from metals or as a solvent for various chemical reactions. Its use in industry is determined by its physical and chemical properties, including its low boiling temperature 40 , high solubility in water approximately 20 g/L, i.e., 235 mM , relative inertness, and low freezing temperature 97 1 . The degradation products of DCM via formaldehyde catalyzed by glutathione S-transferase are suspected to be carcinogenic in animals 2,3 ; it is also argued that exposure to DCM able to utilize some chlorinated short-chain hydrocarbons and carboxylic acid as the sole carbon and energy source for growth, and some genes involved in the assimilation of these compounds have been isolated and characterized 11 14 .…”

Section: Introductionmentioning

confidence: 99%

Aerobic Dechlorination of Dichloromethane Using Biostimulation Agent BD-C in Continuous and Batch Cultures of <i>Xanthobacter autotrophicus</i> GJ10

et al. 2017

View full text Add to dashboard Cite

Effective utilization of dichloromethane by a newly isolated strain Methylobacterium rhodesianum H13

Chen

Ouyang

Liu

et al. 2013

Environ Sci Pollut Res

View full text Add to dashboard Cite

An effective dichloromethane (DCM) utilizer Methylobacterium rhodesianum H13 was isolated from activated sludge. A response surface methodology was conducted, and the optimal conditions were found to be 4.5 g/L Na2HPO4·12H2O, 0.5 g/L (NH4)2SO4, an initial pH of 7.55, and a temperature of 33.7 °C. The specific growth rate of 0.25 h(-1) on 10 mM DCM was achieved, demonstrating that M. rhodesianum H13 was superior to the other microorganisms in previous investigations of DCM utilization. DCM mineralization paralleled the production of cells, CO2, and water-soluble metabolites, as well as the release of Cl(-), whereas the carbon distribution and Cl(-) yield varied with DCM concentrations. The facts that complete degradation only occurred with DCM concentrations below 15 mM and repetitive degradation of 5 mM DCM could proceed for only three cycles were ascribed to pH decrease (from 7.55 to 3.02) though a buffer system was employed.

show abstract

The aerobic degradation of dichloromethane: Structural-functional aspects (a review)

Cited by 12 publications

References 134 publications

Rapid Quantitative Estimation of Chlorinated Methane Utilizing Bacteria in Drinking Water and the Effect of Nanosilver on Biodegradation of the Trichloromethane in the Environment

Rapid Quantitative Estimation of Chlorinated Methane Utilizing Bacteria in Drinking Water and the Effect of Nanosilver on Biodegradation of the Trichloromethane in the Environment

Aerobic Dechlorination of Dichloromethane Using Biostimulation Agent BD-C in Continuous and Batch Cultures of <i>Xanthobacter autotrophicus</i> GJ10

Effective utilization of dichloromethane by a newly isolated strain Methylobacterium rhodesianum H13

Contact Info

Product

Resources

About