Construction of Z-scheme CuFe2O4/MnO2 photocatalyst and activating peroxymonosulfate for phenol degradation: Synergistic effect, degradation pathways, and mechanism

2021 ◽  
pp. 111736
Author(s):  
Xianjie Liu ◽  
Jiabin Zhou ◽  
Dan Liu ◽  
Ling Li ◽  
Wenbo Liu ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Phenol Degradation ◽  
Degradation Pathways

Methanogenic Degradation of Phenol and Benzoate in Acclimated Sludges

1989 ◽  
Vol 21 (4-5) ◽  
pp. 55-65 ◽  
Author(s):  
T. Kobayashi ◽  
T. Hashinaga ◽  
E. Mikami ◽  
T. Suzuki
Keyword(s):  
Fatty Acids ◽  
Anaerobic Degradation ◽  
Phenol Degradation ◽  
Degradation Pathway ◽  
Degradation Pathways ◽  
Cyclohexane Carboxylate ◽  
Gaseous Atmospheres ◽  
Static Conditions ◽  
Co2 Atmosphere

Anaerobic phenol and benzoate degrading consortia were cultivated by acclimation of methanogenic sludges to be capable of degrading completely to CO2 and CH4 1,000 mg/l of phenol within 5–7 days, and 3,000 mg/l of benzoate within 5–7 days, respectively. By using the acclimated sludges, the effect of gaseous atmospheres (H2:CO2/80:20 and N2:CO2/80:20) on the biodegradability and the degradation pathways of phenol and benzoate were examined. Although the anaerobic degradation of phenol was accelerated in the H2/CO2 atmosphere compared with the N2/CO2 atmosphere, benzoate was accumulated. Degradations of benzoate and butyrate were inhibited in the H2/CO2 atmosphere under stirred conditions, but not under static conditions. Through a series of biodegradation tests by using several intermediates in phenol degradation reported previously, the anaerobic degradation pathway of phenol in the N2/CO2 atmosphere was suggested to be phenol → benzoate → cyclohexane carboxylate (or 1-cyclohexene carboxylate) → fatty acids → CO2,CH4.

Effect of various gases and chemical catalysts on phenol degradation pathways by pulsed electrical discharges

2008 ◽  
Vol 150 (3) ◽  
pp. 713-722 ◽  
Author(s):  
Yongjun Shen ◽  
Lecheng Lei ◽  
Xingwang Zhang ◽  
Minghua Zhou ◽  
Yi Zhang
Keyword(s):  
Phenol Degradation ◽  
Degradation Pathways ◽  
Electrical Discharges ◽  
Pulsed Electrical Discharges

Study on Phenol-Degrading Characteristics of Hybrid Strains and Immobilized Cells

2014 ◽  
Vol 998-999 ◽  
pp. 330-335
Author(s):  
Cai Hong Yu ◽  
Wan Zhong Zhang ◽  
Chun Yan Li ◽  
Wen Juan Wang ◽  
Ying Huang
Keyword(s):  
Synergistic Effect ◽  
Dissolved Oxygen ◽  
Environmental Conditions ◽  
Degradation Rate ◽  
Ph Value ◽  
Immobilized Cells ◽  
Phenol Degradation ◽  
High Concentration ◽  
Single Strain ◽  
Better Than

This study aims to enhance the bacteria’s ability to degrade phenol by exploring the phenol-degrading capability of hybrid strains and immobilized cells. Two phenol-degradation strains named as A1 and A2 were isolated respectively.The StrainA1 was identified as Burkholderia, while strain A2 was found to be Bacillus cereuswere. In addition, conditions including inoculum strains , pH value, temperature and dissolved oxygen were tested. . It was shown that: (1)Hybrid strains ( mixed A1 with A2) was better than single strain(A1 or A2) in degrading phenol because of the Synergistic effect. It can completely degraded phenol at the concentration of 300mg/ L, 500mg / L, 700mg / L within 12h, 24h, 48h respectively. (2) The optimum environmental conditions of phenol degradation for hybrid strains culture is 35°C, pH is 7.0, the inoculum strains is 10%. (3) It is beneficial to the degradation of phenol, when the speed of the shaker was improved. (4) Phenol-degradation rate and the tolerance of high concentration of phenol were significantly improved when the A1 and A2 were mixed immoblized.

Synergistic Effect of Cathode/peroxymonosulfate/Fe3+ on Phenol Degradation

2017 ◽  
Vol 245 ◽  
pp. 201-210 ◽  
Author(s):  
Yu-Hong Cui ◽  
Xu-Dong Lv ◽  
Jing-Xia Lei ◽  
Zheng-Qian Liu
Keyword(s):  
Synergistic Effect ◽  
Phenol Degradation

scholarly journals Draft Genome Sequence of Phenol-Degrading Variovorax boronicumulans Strain HAB-30

2020 ◽  
Vol 9 (7) ◽  
Author(s):  
Fatma Azwani Abdul Aziz ◽  
Kenshi Suzuki ◽  
Ryota Moriuchi ◽  
Hideo Dohra ◽  
Yosuke Tashiro ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Aromatic Compounds ◽  
Metabolic Pathways ◽  
Chemostat Culture ◽  
Phenol Degradation ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Degradation Pathways ◽  
Content Type ◽  
Genes Encoding

We report the draft genome sequence of Variovorax boronicumulans strain HAB-30, which was isolated from a phenol-degrading chemostat culture. This strain contains genes encoding a multicomponent type of phenol hydroxylase, with degradation pathways for catechol and other aromatic compounds. The genome sequence will be useful for understanding the metabolic pathways involved in phenol degradation.

Electrode potential regulates phenol degradation pathways in oxygen-diffused microbial electrochemical system

2020 ◽  
Vol 381 ◽  
pp. 122663 ◽  
Author(s):  
Lean Zhou ◽  
Xuejun Yan ◽  
Yuqing Yan ◽  
Tian Li ◽  
Jingkun An ◽  
...  
Keyword(s):  
Electrode Potential ◽  
Phenol Degradation ◽  
Degradation Pathways ◽  
Electrochemical System

scholarly journals Subsurface Hydrocarbon Degradation Strategies in Low- and High-Sulfate Coal Seam Communities Identified with Activity-Based Metagenomics

2021 ◽  
Author(s):  
Hannah Doris Schweitzer ◽  
Heidi J Smith ◽  
Elliott P Barnhart ◽  
Luke J McKay ◽  
Robin Gerlach ◽  
...  
Keyword(s):  
Phenol Degradation ◽  
Hydrocarbon Degradation ◽  
Powder River Basin ◽  
Degradation Pathways ◽  
Metagenomic Sequencing ◽  
Redox Potentials ◽  
Coal Seams ◽  
In Situ Conditions ◽  
High Sulfate ◽  
Fumarate Addition

Environmentally relevant metagenomes and BONCAT-FACS derived translationally active metagenomes from Powder River Basin coal seams were investigated to elucidate potential genes and functional groups involved in hydrocarbon degradation to methane in coal seams with high- and low-sulfate levels. An advanced subsurface environmental sampler allowed the establishment of coal-associated microbial communities under in situ conditions for metagenomic analyses from environmental and translationally active populations. Metagenomic sequencing demonstrated that biosurfactants, aerobic dioxygenases, and anaerobic phenol degradation pathways were present in active populations across the sampled redox gradient. In particular, results suggested the importance of anaerobic degradation pathways under high-sulfate conditions with an emphasis on fumarate addition. Under low-sulfate conditions, a mixture of both aerobic and anaerobic pathways were observed but with a predominance of aerobic dioxygenases. The putative low-molecular weight biosurfactant, lichysein, appeared to play a more important role compared to rhamnolipids. The novel methods used in this study-- subsurface environmental samplers in combination with metagenomic sequencing of both translationally active metagenomes and environmental genomes-- offer a deeper and environmentally relevant perspective on community genetic potential from coal seams poised at different redox potentials broadening the understanding of degradation strategies for subsurface carbon.

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