Degradation of polychlorinated biphenyls (PCBs) by four bacterial isolates obtained from the PCB-contaminated soil and PCB-contaminated sediment

Murínová, Slavomíra; Dercová, Katarı́na; Dudášová, Hana

doi:10.1016/j.ibiod.2014.03.011

Cited by 46 publications

(10 citation statements)

References 33 publications

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“…Ochrobactrum anthropi, which is special aerobic, strict respiratory metabolism, can make use of various amino acids, organic acids and carbohydrates as carbon sources, and are studied on wastewater treatment [16] . Bacillus velezensis, a bacterium, which can decompose organic substances, organic sulphides and organic nitrogen that produce malodorous gases [17] .…”

Section: Strain Identificationmentioning

confidence: 99%

Research on Simultaneous Removal of Cyclohexane and Methyl Acetate in Biotrickling Filters

Zhanga¹,

Denga²,

Qina³

et al. 2018

International Conference of Recent Trends in Environmental Science and Engineering

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-In order to further purify two kinds of organic waste gases, methyl acetate and cyclohexane, which were difficult to be biodegraded in refinery wastewater treatment process, a new scheme for purifying mixed waste gas by bio-film construction with dominant bacteria was put forward. Because of the packing has a great influence on the performance of the bio-trickling filter (BTF) for purifying exhaust gas, the effect of two kinds of packing, namely ceramsite and volcanic rock, on cyclohexane purification was investigated. The results indicated that the filter efficiencies with two different packing were equivalent under the same conditions, but ceramsite was finally chosen as the next experimental packing because of its low weight. With activated sludge in secondary sedimentation tank from wastewater treatment plant as the original strain, the dominant degrading bacteria of methyl acetate and cyclohexane were obtained. After initial identification, a vertical BTF was startup with membrane of the dominant cyclohexane degradation bacteria Ochrobactrum intermedium. The tower can be startup quickly in 10 days, and the removal efficiency can reach over 95%. Moreover, the maximum eliminate capacity of cyclohexane was achieve 58.59 g·m -3 ·h -1 . When the reactor entered in stable phase, two kinds of methyl acetate predominant degrading bacteria, Bacillus velezensis and Ochrobactrum anthropi, were added and the methyl acetate gas was injected into the BTF. The performance of purify the mixture of cyclohexane and methyl acetate in the BTF was investigated in different operating conditions. The results showed that when the empty bed residence time was 176.6 s and 83.3 s, for cyclohexane concentration in the inlet air ranging from 50 mg·m -3 to 300 mg·m -3 , the removal efficiency was above 90%. Meanwhile, for methyl acetate concentration ranging from 300 mg·m -3 to 800 mg·m -3 , the removal efficiency was achieve 100%. The maximum eliminate capacity of the two kinds of pollutions was attain 72.99 g·m-3·h-1. In addition, the BTF was strongly resistant to impact load, and the pressure drop was remained at 5~100 pa over the entire operation time, no blockage appeared in the tower.

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Section: Strain Identificationmentioning

confidence: 99%

Research on Simultaneous Removal of Cyclohexane and Methyl Acetate in Biotrickling Filters

Zhanga¹,

Denga²,

Qina³

et al. 2018

International Conference of Recent Trends in Environmental Science and Engineering

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“…The details for the mechanisms of microbial degradation are reported elsewhere (Fritsche and Hofrichter, 2008). Despite numerous recent studies have been undertaken on the bioremediation of PAHs and VOCs employing bacteria (Hamed et al, 2012;Lee et al, 2015;Li et al, 2015;Murínová et al, 2014;Yao et al, 2015) and fungi (Fayeulle et al, 2014;Isola et al, 2013;Mouhamadou et al, 2013;Reyes-César et al, 2014), the knowledge about complete removal of bound toxic compounds by microbial activity is still unclear. Pseudomonas spp., Sphingomonas spp., Flavobacterium spp., Burkholderia spp.…”

Section: Bioremediation Of Pahs and Vocs: Role Of Microbial Degradationmentioning

confidence: 99%

“…(Gram-positive) are the commonly found bacteria for PAHs/VOCs degradation (Haritash and Kaushik, 2009;Lu et al, 2011). They can break down commonly occurring PAHs and VOCs, such as naphthalene, phenanthrene, pyrene, anthracene, benzo[a]pyrene (Lu et al, 2011), BTEX (benzene, toluene, ethylbenzene and xylene), formaldehyde (Trusek-Holownia and Noworyta, 2009), polychlorobiphenyls (PCBs) (Murínová et al, 2014), tricholorethylene (TCE) (Hamed et al, 2012), alkyl ketones and benzene derivatives. These compounds are also degraded by the fungal community, mostly ligninolytic fungi (Morelli et al, 2013), also non-ligninolytic species (Marco-Urrea et al, 2015).…”

Section: Bioremediation Of Pahs and Vocs: Role Of Microbial Degradationmentioning

confidence: 99%

Bioremediation of PAHs and VOCs: Advances in clay mineral–microbial interaction

Biswas

Sarkar

Rusmin

et al. 2015

Environment International

122

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“…Bioremediation represents a perspective and prospective technique for treatment of polluted environments which involves usage of microorganisms and/or plants for pollutant biodegradation or biotransformation. The technology can be performed as natural attenuation or employed as an assisted bioremediation: biostimulation (addition of nutrients and inducers to fortify and stimulate the growth and metabolism of indigenous microorganisms), and bioaugmentation (introduction of indigenous or suitable exogenous bacteria to enhance biodegradation of relevant pollutant) [9][10][11][12][13]. However, successful soil bioaugmentation requires not only application of the individual bacterial strain or a bacterial consortium with the required degradation ability but also of the microorganisms able to survive in the adverse environment [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The Adaptation Mechanisms of Bacteria Applied in Bioremediation of Hydrophobic Toxic Environmental Pollutants: How Indigenous and Introduced Bacteria Can Respond to Persistent Organic Pollutants-Induced Stress?

Dercová¹,

Murínová²,

Dudášová³

et al. 2019

Persistent Organic Pollutants

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The chapter describes the aspects of bioremediation that are related to survival and metabolism of bacterial degraders in the adverse environment contaminated with dangerous hydrophobic chemicals, polychlorinated biphenyls (PCBs). Successful environment decontamination requires bacterial strains that possess appropriate enzymes and are able to degrade particular contaminants. This chapter deals mainly with the adaptation mechanisms that allow bacteria to decrease toxic effects of the dangerous compounds on cytoplasmic membrane as the first contact point of pollutants and the bacterial cell. Many responses have been observed in bacteria that counteract the effects of toxic environmental organic pollutants: saturation-rigidification of cell membrane, cis/trans isomerization of fatty acids, increased content of cyclopropane fatty acids, and changes in branched fatty acids and cardiolipin, production of stress proteins, and elimination of toxic compounds using efflux pump. The study of these mechanisms is the first step in selection of appropriate resistant bacterial strains for bioremediation applications. Next steps should include study of degradation potential and efficacy of the most resistant strains. Setting up suitable experimental systems to examine the cell responses to toxic environmental organic pollutants in the adverse environment and optimal conditions for metabolism of bacterial degraders are important issues in the current bioremediation research agenda.

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Degradation of polychlorinated biphenyls (PCBs) by four bacterial isolates obtained from the PCB-contaminated soil and PCB-contaminated sediment

Cited by 46 publications

References 33 publications

Research on Simultaneous Removal of Cyclohexane and Methyl Acetate in Biotrickling Filters

Research on Simultaneous Removal of Cyclohexane and Methyl Acetate in Biotrickling Filters

Bioremediation of PAHs and VOCs: Advances in clay mineral–microbial interaction

The Adaptation Mechanisms of Bacteria Applied in Bioremediation of Hydrophobic Toxic Environmental Pollutants: How Indigenous and Introduced Bacteria Can Respond to Persistent Organic Pollutants-Induced Stress?

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