Biodegradation of <i>o</i>-dichlorobenzene by <i>Bacillus cereus</i> DL-1：kinetics, degradation pathway, biodegradability and performance in biotrickling filter

Yang, Bairen; Li, Yue; Shang, Qingqing; Ding, Cheng; Xu, Qingping

doi:10.1080/26395940.2020.1777208

Cited by 6 publications

(3 citation statements)

References 34 publications

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“…The kinetic model describes the functional relationship between microbial biomass and substrate concentration. During the exponential growth stage, the specific growth rate ( μ ) of biomass is determined by the initial substrate concentration 30 . This enables us to establish a relationship of μ = f ( S 0 ), where S 0 denotes the initial concentration of the growth substrate in solution.…”

Section: Methodsmentioning

confidence: 99%

“…During the exponential growth stage, the specific growth rate (μ) of biomass is determined by the initial substrate concentration. 30 This enables us to establish a relationship of μ = f (S 0 ), where S 0 denotes the initial concentration of the growth substrate in solution. By examining this relationship, we can determine the constant form of the kinetic equation that describes the microbial growth dynamics under different substrate conditions.…”

Section: Bio-kinetic Analysis Of Cb Degradationmentioning

confidence: 99%

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Reduction characteristic of chlorobenzene by a newly isolated Paenarthrobacter ureafaciens LY from a pharmaceutical wastewater treatment plant

Liu,

Yao,

Zhang

et al. 2024

Cell Biochemistry & Function

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A highly efficient chlorobenzene‐degrading strain was isolated from the sludge of a sewage treatment plant associated with a pharmaceutical company. The strain exhibited a similarity of over 99.9% with multiple strains of Paenarthrobacter ureafaciens. Therefore, the strain was suggested to be P. ureafaciens LY. This novel strain exhibited a broad spectrum of pollutant degradation capabilities, effectively degrading chlorobenzene and other organic pollutants, such as 1, 2, 4‐trichlorobenzene, phenol, and xylene. Moreover, P. ureafaciens LY co‐metabolized mixtures of chlorobenzene with 1, 2, 4‐trichlorobenzene or phenol. Evaluation of its degradation efficiency showed that it achieved an impressive degradation rate of 94.78% for chlorobenzene within 8 h. The Haldane–Andrews model was used to describe the growth of P. ureafaciens LY under specific pollutants and its concentrations, revealing a maximum specific growth rate (μmax) of 0.33 h−1. The isolation and characterization of P. ureafaciens LY, along with its ability to degrade chlorobenzene, provides valuable insights for the development of efficient and eco‐friendly approaches to mitigate chlorobenzene contamination. Additionally, investigation of the degradation performance of the strain in the presence of other pollutants offers important information for understanding the complexities of co‐metabolism in mixed‐pollutant environments.

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Section: Methodsmentioning

confidence: 99%

Section: Bio-kinetic Analysis Of Cb Degradationmentioning

confidence: 99%

Reduction characteristic of chlorobenzene by a newly isolated Paenarthrobacter ureafaciens LY from a pharmaceutical wastewater treatment plant

Liu,

Yao,

Zhang

et al. 2024

Cell Biochemistry & Function

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show abstract

“…If the inlet concentration of chlorobenzene or the EBRT further increased, the microbial activity might be inhibited in the system. The degradation effect of chlorobenzene declined [37,38]. Therefore, an EBRT of no more than 80 s was determined to be sufficient in this system.…”

Section: Influence Of Ebrtmentioning

confidence: 95%

Study on Gaseous Chlorobenzene Treatment by a Bio-Trickling Filter: Degradation Mechanism and Microbial Community

Liu

Cai

et al. 2022

Processes

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Large-flow waste gas generated from the pharmaceutical and chemical industry usually contains low concentrations of VOCs (volatile organic compounds), and it is also the key factor that presents challenges in terms of disposal. To date, due to the limitations of mass transfer rate and microbial degradation ability, the degradation performance of VOCs using the biological method has not been ideal. Therefore, in this study, the sludge from a chlorobenzene-containing wastewater treatment plant was inoculated into our experimental bio-trickling filter (BTF) to explore the feasibility of domestication and degradation of gaseous chlorobenzene by highly active microorganisms. The kinetics of its mass transfer reaction and microbial community dynamics were also discussed. Moreover, the main process parameters of BTF for chlorobenzene degradation were optimized. The results showed that the degradation effect of chlorobenzene reached more than 85% at an inlet concentration of chlorobenzene 700 mg·m−3, oxygen concentration of 10%, and an empty bed retention time (EBRT) of 80 s. The mass transfer kinetic analysis indicated that the process of chlorobenzene degradation in the BTF occurred between the zero-stage reaction and the first-stage reaction. This BTF contributed significantly to the biodegradability of chlorobenzene, overcoming the limitation of gas-to-liquid/solid mass transfer of chlorobenzene. The analysis of the species diversity showed that Thermomonas, Petrimona, Comana, and Ottowia were typical organic-matter-degrading bacteria that degraded chlorobenzene efficiently with xylene present.

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Role of Constituent Oxides for Thermal Mineralization of o‐Dichloro Benzene over Mixed‐Oxide‐TiO₂ Catalysts: A Mechanistic Explanation

Bhattacharyya,

Kumar,

Tyagi

et al. 2024

ChemPhysChem

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Catalysts with V2O5, WO3 and V2O5‐WO3 dispersed over TiO2 were synthesized using sol‐gel technique and thoroughly characterized by various techniques. The catalysts were evaluated for degradation of ortho‐dichloro benzene (o‐DCB) in air/helium, a representative probe molecule for polychlorinated dibenzo‐para‐dioxin and polychlorinated dibenzofuran by employing in situ Fourier‐transform infrared spectroscopy (FT‐IR spectroscopy). Different intermediate species formed on the surface of the TiO2 supported catalysts through of interaction of sorbate molecules with the lattice and/or gaseous oxygen were investigated in detail. Analysis of vibrational bands, observed during sorption of o‐DCB and o‐DCB‐air mixture as a function of temperature over these catalysts, delineated the role of surface intermediate species such as phenolate, enolates, maleates, carboxylates, carbonates in mineralization of o‐DCB. Nature and stability of intermediate species, found to be different over these catalysts, were able to elucidate the catalytic activity trend

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Biodegradation of o-dichlorobenzene by Bacillus cereus DL-1：kinetics, degradation pathway, biodegradability and performance in biotrickling filter

Cited by 6 publications

References 34 publications

Reduction characteristic of chlorobenzene by a newly isolated Paenarthrobacter ureafaciens LY from a pharmaceutical wastewater treatment plant

Reduction characteristic of chlorobenzene by a newly isolated Paenarthrobacter ureafaciens LY from a pharmaceutical wastewater treatment plant

Study on Gaseous Chlorobenzene Treatment by a Bio-Trickling Filter: Degradation Mechanism and Microbial Community

Role of Constituent Oxides for Thermal Mineralization of o‐Dichloro Benzene over Mixed‐Oxide‐TiO₂ Catalysts: A Mechanistic Explanation

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Biodegradation of o-dichlorobenzene by Bacillus cereus DL-1：kinetics, degradation pathway, biodegradability and performance in biotrickling filter

Cited by 6 publications

References 34 publications

Reduction characteristic of chlorobenzene by a newly isolated Paenarthrobacter ureafaciens LY from a pharmaceutical wastewater treatment plant

Reduction characteristic of chlorobenzene by a newly isolated Paenarthrobacter ureafaciens LY from a pharmaceutical wastewater treatment plant

Study on Gaseous Chlorobenzene Treatment by a Bio-Trickling Filter: Degradation Mechanism and Microbial Community

Role of Constituent Oxides for Thermal Mineralization of o‐Dichloro Benzene over Mixed‐Oxide‐TiO2 Catalysts: A Mechanistic Explanation

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Role of Constituent Oxides for Thermal Mineralization of o‐Dichloro Benzene over Mixed‐Oxide‐TiO₂ Catalysts: A Mechanistic Explanation