Phenol degradation studies using microbial consortium isolated from environmental sources

Sivasubramanian, S.; Namasivayam, S. Karthick Raja

doi:10.1016/j.jece.2014.12.014

Cited by 48 publications

(19 citation statements)

References 18 publications

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“…The concentration of every intermediate first increased and then decreased. For the intermediate products, benzoquinone and pyrocatechol reached their maximum concentrations at a reaction time of approximately 3 h while resorcinol and hydroquinone needed approximately 4 h. This showed that most of the intermediate products had been degraded to carbon dioxide and water …”

Section: Resultsmentioning

confidence: 95%

An electro-microbial membrane system with anti-fouling function for phenol wastewater treatment

Cao

Zhang

et al. 2016

J. Chem. Technol. Biotechnol

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BACKGROUND Membrane fouling is still a big problem to be solved. In order to reduce membrane fouling and improve the efficiency of phenol degradation, a Pd/carbon conductive membrane, used as both a filter membrane and a cathode, was prepared by electrodeposition of Pd on a carbon membrane and then employed to develop an electro‐microbial membrane system (EMMS). RESULTS The degradation rate of phenol was higher than that in a microbial membrane system (MMS) and in an electrocatalytic membrane system (EMS). The phenol degradation followed zero‐order kinetics in the three systems. The degradation efficiencies of phenol and COD were 99.6% and 95.4%, respectively, at 10 h in the EMMS. The mean membrane flux in the EMMS was 2.64 times that in the MMS and 1.25 times that in the EMS. The reasons for the excellent anti‐fouling of Pd/carbon membrane were: (1) the membrane had repulsion potential for the pollutant because it carried negative charges; (2) H2 bubbles generated on the membrane surface possibly induced gas and liquid microflows to detach and even blow‐out the foulants; and (3) the membrane was scoured by shear stress resulting from aeration. CONCLUSIONS A carbon/Pd conductive membrane as cathode has great potential for membrane fouling mitigation in EMMS. © 2016 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 95%

An electro-microbial membrane system with anti-fouling function for phenol wastewater treatment

Cao

Zhang

et al. 2016

J. Chem. Technol. Biotechnol

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“…In the same way, Sivasubramanian and Namasivayam ( 2015 ) developed a microbial consortium consisting of five phenol-degrading strains isolated from environmental source. The consortium could degrade 99% of 1,000 mg L −1 phenol after 72 h incubation with a biomass increase from 2.6 × 10 7 to 4 × 10 12 CFU mL −1 .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Fungal Growth on Olive-Mill Wastewaters Treated at High Temperature and by High-Pressure Homogenization

et al. 2017

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Reuse of olive mill wastewaters (OMWWs) in agriculture represents a significant challenge for health and safety of our planet. Phytotoxic compounds in OMWW generally prohibit use of untreated OMWWs for agricultural irrigation or direct discharge into surface waters. However, pretreated OMWW can have positive effects on chemical and microbiological soil characteristics, to fight against fungal soil-borne pathogens. Low amounts of OMWW following thermal (TT-OMWW) and high-pressure homogenization (HPH-OMWW) pretreatments counteracted growth of some of 12 soil-borne and/or pathogenic fungi examined. With fungal growth measured as standardized change in time to half maximum colony diameter, Δτ, overall, HPH-OMWW showed increased bioactivity, as increased mean Δτ from 3.0 to 4.8 days. Principal component analysis highlighted two fungal groups: Colletotrichum gloeosporioides, Alternaria alternata, Sclerotium rolfsii, and Rosellinia necatrix, with growth strongly inhibited by the treated OMWWs; and Aspergillus ochraceus and Phaeoacremonium parasiticum, with stimulated growth by the treated OMWWs. As a non-thermal treatment, HPH-OMWW generally shows improved positive effects, which potentially arise from preservation of the phenols.

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“…Laccase is widely distributed in plants, microorganisms, and animals, and most laccase has been isolated from fungi such as ascomycetes, deuteromycetes, and basidiomycetes (Du et al 2018;Xu et al 2019). Phenol is a common pollutant from the wastewaters of coal mines, plastics, oil refining, pulp mills, distilleries, pharmaceuticals, leather making, herbicides, and pesticides (Sivasubramanian and Namasivayam 2015;Cordova Villegas et al 2016). It causes systemic diseases in humans and is one of the 129 water pollutants under priority control by the U.S. Environmental Protection Agency (Huang et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Laccase production by Pycnoporus sp. W-9 using rose dregs and its application for phenol degradation

Liang

Hua

Zhao

et al. 2020

BioRes

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Rose dregs were used for laccase production by the strain Pycnoporus sp. W-9 under liquid fermentation, and the obtained laccase was used for phenol degradation. The conditions for laccase production were optimized by Box-Behnken design, and the phenol degradation conditions using the crude laccase were optimized by central composite design. The optimal conditions for laccase production by the strain W-9 were as follows: rose dregs (40 g/L), KCl (0.144 g/L), KH2PO4 (1 g/L), K2HPO4 (0.699 g/L), NaCl (0.2 g/L), MgSO4·7H2O (0.3 g/L), CuSO4·5H2O (0.306 g/L), Tween 80 (0.2 g/L), and CaCO3 (1 g/L), at a pH of 6.0, incubated at 30 °C and 200 rpm for 7 d. The corresponding laccase yield reached 17.4 U/mL, which was approximately 1.8 times the original production. The optimal conditions for phenol removal by the crude laccase were as follows: laccase (12.2 U/mL), 0.1 mol/L citric acid-disodium hydrogen phosphate buffer (pH 3.5), phenol (100 μg/mL), and Triton X-100 (284 μg/mL), incubated at 45 °C for 2 h. The corresponding phenol degradation rate reached 86.6%. These results should be useful for utilization of rose dregs and bioremediation of soil and wastewater.

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Phenol degradation studies using microbial consortium isolated from environmental sources

Cited by 48 publications

References 18 publications

An electro-microbial membrane system with anti-fouling function for phenol wastewater treatment

An electro-microbial membrane system with anti-fouling function for phenol wastewater treatment

Evaluation of Fungal Growth on Olive-Mill Wastewaters Treated at High Temperature and by High-Pressure Homogenization

Laccase production by Pycnoporus sp. W-9 using rose dregs and its application for phenol degradation

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