Effect of surfactants at natural and acidic pH on microbial activity and biodegradation of mixture of benzene and o-xylene

Khoramfar, Shooka; Jones, Kim D.; Ghobadi, Jalil; Taheri, Parisa

doi:10.1016/j.chemosphere.2020.127471

Cited by 16 publications

(4 citation statements)

References 27 publications

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“…Fitted data show that neutral pH (7) was more effective in the removal of benzene and o -xylene than acidic pH (4). The unnamed culture of microbes was observed at acidic pH4 with an increase in benzene (11%) and o -xylene (22%) than at neutral pH [ 99 ]. These studies denote the influence of pH on the degradation of contaminants by microbes and the maintenance of optimum pH without any disturbance.…”

Section: Biofiltrationmentioning

confidence: 99%

“…Laboratory research experimental works were done with biofilter techniques for various chemicals such as toluene, benzene, ethylbenzene, xylene, styrene, a -pinene, etc. [ 76 , 99 , 101 , 113 ]. As discussed in the previous section, the performance of biofilters depends upon their parameter values during operation.…”

Section: Biofiltration Technique In the Removal Of Volatile Organic C...mentioning

confidence: 99%

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A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

et al. 2022

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Good quality of water determines the healthy life of living beings on this earth. The cleanliness of water was interrupted by the pollutants emerging out of several human activities. Industrialization, urbanization, heavy population, and improper disposal of wastes are found to be the major reasons for the contamination of water. Globally, the inclusion of volatile organic compounds (VOCs) and heavy metals released by manufacturing industries, pharmaceuticals, and petrochemical processes have created environmental issues. The toxic nature of these pollutants has led researchers, scientists, and industries to exhibit concern toward the complete eradication of them. In this scenario, the development of wastewater treatment methodologies at low cost and in an eco-friendly way had gained importance at the international level. Recently, bio-based technologies were considered for environmental remedies. Biofiltration-based works have shown a significant result for the removal of volatile organic compounds and heavy metals in the treatment of wastewater. This was done with several biological sources such as bacteria, fungi, algae, plants, yeasts, etc. The biofiltration technique is cost-effective, simple, biocompatible, sustainable, and eco-friendly compared to conventional techniques. This review article provides deep insight into biofiltration technologies engaged in the removal of volatile organic compounds and heavy metals in the wastewater treatment process.

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Section: Biofiltrationmentioning

confidence: 99%

Section: Biofiltration Technique In the Removal Of Volatile Organic C...mentioning

confidence: 99%

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

et al. 2022

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“…These molecules decrease the surface or interfacial free energy, which causes reduction in interfacial or surface tension between two phases (Mondal et al, 2015). In bioremediation studies, surfactants have been used to enhance biodegradation substrates (Khoramfar et al, 2020;Cheng et al, 2021;Sánchez-Muñoz et al, 2021;Ren et al, 2021). In particular, Trichoderma harzianum has been described to be able to degrade the plasticizer di(2-ethyl hexyl) phthalate, which make plastics elastic, flexible and extensible (Aguilar-Alvarado et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Tween 80-induced esterase production by Trichoderma harzianum in submerged fermentation: An esterase activity assay using α-naphthyl acetate as substrate

González-Marquez¹,

Sánchez²

2022

Mexjbiotechnol

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Tween 80 is a surfactant that has been used for several purposes in microbial cultures. In bioremediation studies, the addition of surfactants in the medium is a common practice, since it makes hydrophobic substrates available to the microorganism. In this work, the influence of Tween 80 (100 or 400 μL/L) on the biomass production, protein content, esterase activities and, growth and enzymatic yield parameters of Trichoderma harzianum grown in submerged fermentation was evaluated. Assessments of esterase activities through biochemical tests and zymographic assays were carried out using α-naphthyl acetate as substrate. A single band with esterase activity was observed in the different concentrations of Tween 80 tested. However, 400 μL of Tween 80 induced higher esterase production (148.2 U/L) in T. harzianum as compared to that esterase activity (79.5 U/L) shown in the medium added with 100 μL of Tween 80 per liter. These results showed that high concentrations (e.g. 400 μL/L) of Tween 80 enhanced the esterase activity in T. harzianum. The single band with esterase activity revealed on zymograms suggests that this enzyme (of 38 kDa approx.) may be present in both forms as a constitutive as well as an inducible esterase, since it was observed in both glucose- and Tween 80-supplemented media.

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“…Many researchers in literature have reported similar observations on the preferential biodegradation of one aromatic pollutant over another in mixed substrate systems, even though the same degradation pathway was followed for these compounds by different microorganisms. For example, the rate of benzene biodegradation was faster than o-xylene by fungal species might be because benzene is the preferred substrate in a benzene-xylene mixture(Khoramfar et al 2020).…”

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confidence: 99%

Co-metabolic biodegradation of 4-bromophenol in mixture of pollutants system by Arthrobacter chlorophenolicus A6

Sahoo

Raut

Davery

et al. 2021

Preprint

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Brominated phenols are listed as priority pollutants, and are the key components of paper pulp wastewater together with nitrophenol and chlorophenol. However, the biodegradation of bromophenol in a mixed substrate system is very scanty. In the present investigation, simultaneous biodegradation kinetics of three substituted phenols (4-bromophenol, 4-BP; 4-nitrophenol, 4-NP; and 4-chlorophenol, 4-CP) were investigated using Arthrobacter chlorophenolicus A6. A 23 full factorial design was applied with varying 4-BP and 4-CP from 75–125 mgl− 1and4-NP from 50–100 mgl− 1. Almost complete degradation of this mixture of substituted phenols was achieved at an initial concentration combination of 125, 125, and 100 mgl− 1of 4-CP, 4-BP, and 4-NP, respectively in 68 h. Statistical analysis of the results revealed that among the three variables, 4-NP had the most prominent influence on both degradations of 4-CP and 4-BP. While the concentration of 4-CP had a strong negative interaction effect on the biodegradation of 4-NP. Irrespective of the concentration levels of these three substrates, 4-NP was preferentially biodegraded over 4-CP and 4-BP. Further, 4-BP biodegradation rates were found to be higher than that of 4-CP followed by 4-NP. Besides, the variation of biomass yield coefficient of the culture was investigated at different initial concentration combinations of these substituted phenols. Although the actinomycetes consumed 4-NP at a faster rate, the biomass yield was very poor. This revealed that the microbial cells were more stressed when grown on 4-NP compared to 4-BP and 4-CP. Overall, this study revealed the prospective of A. chlorophenolicus A6 for the degradation of 4-BP in mixed substrate systems.

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Effect of surfactants at natural and acidic pH on microbial activity and biodegradation of mixture of benzene and o-xylene

Cited by 16 publications

References 27 publications

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

Tween 80-induced esterase production by Trichoderma harzianum in submerged fermentation: An esterase activity assay using α-naphthyl acetate as substrate

Co-metabolic biodegradation of 4-bromophenol in mixture of pollutants system by Arthrobacter chlorophenolicus A6

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