Anaerobic degradation of phenol in wastewater at ambient temperature

Fang, Hhp; Liu, Y.; Ke, Shui Zhou; Zhang, T.

doi:10.2166/wst.2004.0028

Cited by 63 publications

(38 citation statements)

References 19 publications

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“…At a recirculation ratio of 1.0, COD removal also increased to 95% from 92% without recirculation at the same HRT (0.5 d). Similar results were reported by Fang et al (2004) during the treatment of phenolic wastewater employing effluent recirculation at a HRT of 0.5 d and effluent to feed recycle ratio of 1.0. The average effluent volatile fatty acids decreased from 25 mg/L to 15 mg/L.…”

Section: Methodssupporting

confidence: 88%

Effect of effluent recycling and shock loading on the biodegradation of complex phenolic mixture in hybrid UASB reactors

Ramakrishnan

Gupta

2008

Bioresource Technology

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Section: Methodssupporting

confidence: 88%

Effect of effluent recycling and shock loading on the biodegradation of complex phenolic mixture in hybrid UASB reactors

Ramakrishnan

Gupta

2008

Bioresource Technology

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“…More recently, a syntrophic phenol-degrading bacterium (Syntrophorhabdus aromaticivorans) was isolated, and a novel family, Syntrophorhabdaceae (formerly known as Deltaproteobacteria group TA), was proposed (30). Although efforts have been made to identify the specific microbial populations important for the degradation of phenol under anaerobic conditions (9,16,49), microorganisms that grow under well-controlled conditions in the laboratory may not fully represent those in full-scale bioreactors receiving actual wastewater.In our previous study, a Syntrophorhabdaceae-like bacterial population was also found abundantly by fluorescence in situ hybridization (FISH) in a full-scale mesophilic granular activated carbon anaerobic fluidized bed (GAC-AFB) reactor treating phenol-containing wastewater (9). Though the dominance of Syntrophorhabdacea-like populations in a real wastewater treatment system may provide a lead to improving the startup strategy, an in-depth understanding of the exact microbial community in a full-scale plant is necessary to facilitate the development of full-scale processes.…”

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confidence: 99%

Characterization of Active Microbes in a Full-Scale Anaerobic Fluidized Bed Reactor Treating Phenolic Wastewater

Chen

Tseng

et al. 2009

Microb. Environ.

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This study investigated the active microbial community in a full-scale granular activated carbon-anaerobic fluidized bed (GAC-AFB) reactor treating wastewater from the manufacturing of phenolic resin, using 16S rRNA-based molecular analyses. The results of cDNA from 16S rRNA revealed that Methanosaeta-related (83.9% of archaeal clones) and Syntrophorhabdaceae (formerly named Deltaproteobacteria group TA)-related (68.9% of bacterial clones) microorganisms were as the most predominant populations in the phenol-degrading GAC-AFB reactor. The high abundance of Syntrophorhabdaceae was supported by a terminal restriction fragment length polymorphism (T-RFLP) analysis, which showed that a Syntrophorhabdaceae-like fragment of 119 bp (~80% of total fragments) was the most predominant phylotype. Furthermore, fluorescence in situ hybridization (FISH) analyses suggested that Syntrophusand Chloroflexi-like cells were also in high abundance in the GAC biofilm. A non-layered structure of microorganisms was found in the GAC biofilm, where Methanosaeta (thick filamentous), Syntrophorhabdaceae (oval-shaped), Syntrophus (small rods) and Chloroflexi (thin-filamentous) were randomly distributed with high abundance. These findings greatly improve our understanding of the diversity and distribution of microbial populations in a full-scale mesophilic bioreactor treating an actual phenol-containing waste stream.Key words: phenol, anaerobic, microbial, phylogenetic, FISH Syntrophic association is an important process in anaerobic catabolism, whereby two or more microorganisms cooperate closely to completely degrade a substance neither can degrade alone. This process generally requires interaction between fermentative bacteria and methanogenic archaea (methanogens) to overcome the thermodynamic barrier in the initial step of degradation (e.g., fatty acids, solvents and aromatic substrates), and leads to the production of methane. Biodegradation of phenol under methanogenic conditions has been known for more than two decades (42, 48), and a number of different anaerobic processes (23,37,40,42) have been developed to successfully treat industrial waste streams containing phenol. A bottleneck to the starting up of these anaerobic processes was considered to be the cultivation/ acclimation of unique microbial specialists. A few reports have characterized these syntrophic phenol-degrading microorganisms. Fang and co-workers (16, 49) suggested that Desulfotomaculum, Clostridium and Syntrophus, together with Methanosaetaceae, Methanomicrobiales and Methanobacteriaceae, were the predominant microbial populations in a laboratory-scale upflow anaerobic sludge bed (UASB) reactor that degraded phenol under ambient temperature (26°C). Last year, we reported that Deltaproteobacteria group TA-and Pelotomaculum-related populations were the most important fermentative bacteria, in phenol-degrading enrichments under mesophilic (37°C) and thermophilic (55°C) conditions, respectively (9). More recently, a syntrophic phenol-degrading bacterium (Syntrophorhabd...

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“…It has been reported that phenol concentration up to a range of 500-700 mg/L is generally not inhibitory to the UASB process [16]. Since phenol is anaerobically degradable, the phenol concentration in the bulk solution of the reactor might drop to low levels, particularly after several months of sludge adaptation [17,18]. 5 mg/L 38,048 50 [7]; + Monthly average; -Undetermined…”

Section: Treatment In Uasb Reactorsmentioning

confidence: 99%

Anaerobic Treatment of Olive Mills Water: Potentials for Watershed Protection in Jordan

Mahmoud¹,

Mels²,

Lier³

2017

Eco-Tech

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Jordan watersheds heavily suffer from the seasonal discharge of highly concentrated olive mill wastewater (OMW). Environmental concern and protection of the scarcely available water resources calls for adequate treatment of OMW prior to discharge. This paper describes an inventory that was made with the aim of developing pollution prevention strategies for the olive mill sector of the Jerash Governorate in Jordan. Emphasis was given to compiling regional research which shows that modern anaerobic technology may play an important role in treating the highly concentrated OMW. The paper also presents pre and post treatment options for achieving local discharge criteria. Based on literature review and current insights three innovative treatment strategies are presented for OMW in the Jerash region.

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Anaerobic degradation of phenol in wastewater at ambient temperature

Cited by 63 publications

References 19 publications

Effect of effluent recycling and shock loading on the biodegradation of complex phenolic mixture in hybrid UASB reactors

Effect of effluent recycling and shock loading on the biodegradation of complex phenolic mixture in hybrid UASB reactors

Characterization of Active Microbes in a Full-Scale Anaerobic Fluidized Bed Reactor Treating Phenolic Wastewater

Anaerobic Treatment of Olive Mills Water: Potentials for Watershed Protection in Jordan

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