Enhanced phenol removal by floating fungal populations in a high concentration phenol-fed membrane bioreactor

Ahn, Soojeung; Congeevaram, Shankar; Choung, Youn-Kyoo; Park, Joonhong

doi:10.1016/j.desal.2007.01.110

Cited by 22 publications

(12 citation statements)

References 17 publications

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“…In this study, it was verified that a SMBR biomass was able to degrade almost all phenol added in the bioreactor. Studies have revealed that the use of the membrane bioreactor process (MBR) has been effective in the biological treatment of wastewater with high concentration of phenol [1,6]. The main advantage of MBR is that it can achieve complete sludge retention (including the floating populations), resulting in high sludge concentrations and long sludge retention times (SRTs) [42].…”

Section: Discussionmentioning

confidence: 99%

“…It is well known that the degradation efficacy of a biological treatment depends on the stability of the microbial community involved in the decontamination process [24]. Recently, bacterial phenol degradation in bioreactor conditions has been successfully demonstrated by several authors [1,4,7,33]. However, despite the great relevance of biological treatments to industrial wastewater plants, most of the related studies have focused mainly on treatment performance and associated parameters, without giving proper attention to the microbial community involved.…”

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confidence: 99%

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Monitoring the Bacterial Community Dynamics in a Petroleum Refinery Wastewater Membrane Bioreactor Fed with a High Phenolic Load

Silva

Viero

Dias

et al. 2010

Journal of Microbiology and Biotechnology

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The phenolic compounds are a major contaminant class often found in industrial wastewaters and the biological treatment is an alternative tool commonly employed for their removal. In this sense, monitoring microbial community dynamics is crucial for a successful wastewater treatment. This work aimed to monitor the structure and activity of the bacterial community during the operation of a laboratory-scale continuous submerged membrane bioreactor (SMBR), using PCR and RT-PCR followed by denaturing gradient gel electrophoresis (DGGE) and 16S rRNA libraries. Multivariate analyses carried out using DGGE profiles showed significant changes in the total and metabolically active dominant community members during the 4-week treatment period, explained mainly by phenol and ammonium input. Gene libraries were assembled using 16S rDNA and 16S rRNA PCR products from the fourth week of treatment. Sequencing and phylogenetic analyses of clones from the 16S rDNA library revealed a high diversity of taxa for the total bacterial community, with predominance of Thauera genus (ca. 50%). On the other hand, a lower diversity was found for metabolically active bacteria, which were mostly represented by members of Betaproteobacteria (Thauera and Comamonas), suggesting that these groups have a relevant role in the phenol degradation during the final phase of the SMBR operation.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Monitoring the Bacterial Community Dynamics in a Petroleum Refinery Wastewater Membrane Bioreactor Fed with a High Phenolic Load

Silva

Viero

Dias

et al. 2010

Journal of Microbiology and Biotechnology

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“…Phenol has a sweet tar like odour and soluble in alcohol, glycerol, petroleum and also in water to a lesser extent (Basha et al 2010). In environment, phenol pollution is associated with distilleries, pulp and paper mills, coal mines, oil-refineries, wood preservation plants, pharmaceuticals, coke-oven batteries, herbicides and pesticides as well as their wastewaters (Sung et al 2000;Gibson and Harwood 2002;Ahn et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Phenol degradation by Paenibacillus thiaminolyticus and Bacillus cereus in axenic and mixed conditions

Chandra

Yadav

Bharagava

et al. 2011

World J Microbiol Biotechnol

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In this study, seven aerobic bacterial strains were screened for phenol tolerance at different concentration of phenol. Bacterial strains were unable to utilize phenol in absence of glucose, indicated the phenomenon of co-metabolism. Among the seven isolated bacterial strains, only ITRC BK-4 and ITRC BK-7 found potential and identified as Paenibacillus thiaminolyticus (DQ435022) and Bacillus cereus (DQ435023), respectively. Phenol degradation was monitored routinely with spectrophotometer and further confirmed by HPLC analysis. ITRC BK-4, ITRC BK-7 and mixed culture degrade 700 ppm phenol up to 51.72, 70.00 and 84.57% respectively in mineral salt medium (MSM) at temperature 37 ± 1°C, pH 7.5 ± 0.2, 120 rpm in presence of 1% glucose (w/v) within 144 h incubation. The mix culture was found more potential for phenol degradation compared to axenic strains. Hence, the axenic and mixed strains of these bacteria would be useful for the removal/mineralization of phenol from industrial waste waters.

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“…A series of traditional wastewater treatment processes can remove phenol, 4-nonylphenol, and bisphenol to an acceptable level (Kurata et al, 2008). Because of its negative effects on public health and ecosystems, phenol and its related compounds have been given high priority in governmental regulations in many countries (Ahn et al, 2008;Kurata et al, 2008;Kujawski et al, 2004;Tziotzios et al, 2007;Xiao et al, 2006). In this research, 4-aminoantipyrine method was used to measure phenols by determining all ortho-substituted and meta-substituted phenols or napthols, but not para-substituted phenols.…”

Section: Leachate Characterizationmentioning

confidence: 99%

Measuring 81 characterization parameters from different tropical landfill leachates and potential treatment techniques

2015

Global NEST Journal

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Raw municipal landfill leachate is extremely polluted wastewater and it regards as one of the drawbacks of the sanitary landfill treatment method. If the untreated landfill leachate is discharged to the natural environment, a great problem for the environment can be created, particularly for the water resources. To assess fresh leachate; collection, analyzing for various parameters, and comparing with the standards are essential. Thus, this study was purposed to examine the characteristics of different landfill leachate samples collected from three tropical landfill sites. The results of the formed leachate at the anaerobic Kulim Sanitary Landfill, semi-aerobic Pulau Burung Landfill Site, and anaerobic Kuala Sepetang landfill leachate in the northern region of Malaysia have been analyzed for 27 parameters and compared. The studied parameters in the present study were phenols, zeta potential, oxidation-reduction potential (ORP), chemical oxygen demand (COD), biochemical oxygen demand (BOD5), heavy metals, nitrogen compounds, salinity, electrical conductivity etc. For checking the risks of the leachate on the environment, the obtained results were compared with the Malaysia Standards. In addition, the leachate treatment opportunities upon the characterization are highlighted in this study. The effectiveness of various applications in treating leachate collected from municipal landfill was presented and discussed. It could be concluded that the knowledge of leachate quality is particularly significant in choosing an appropriate treatment techniques

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Enhanced phenol removal by floating fungal populations in a high concentration phenol-fed membrane bioreactor

Cited by 22 publications

References 17 publications

Monitoring the Bacterial Community Dynamics in a Petroleum Refinery Wastewater Membrane Bioreactor Fed with a High Phenolic Load

Monitoring the Bacterial Community Dynamics in a Petroleum Refinery Wastewater Membrane Bioreactor Fed with a High Phenolic Load

Phenol degradation by Paenibacillus thiaminolyticus and Bacillus cereus in axenic and mixed conditions

Measuring 81 characterization parameters from different tropical landfill leachates and potential treatment techniques

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