Bioregeneration of powdered activated carbon in the treatment of alkyl-substituted phenolic compounds in simultaneous adsorption and biodegradation processes

Lee, K.M.; Lim, Poh‐Eng

doi:10.1016/j.chemosphere.2004.09.027

Cited by 38 publications

(19 citation statements)

References 13 publications

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“…Biomass concentration was measured spectrophotometrically at 660 nm, and phenol concentration was monitored at its maximum absorbance peak at 269 nm (Lee and Lim 2005) by Jasco UV-560 (Japan).…”

Section: Methodsmentioning

confidence: 99%

Bioaugmentation with a novel alkali-tolerant Pseudomonas strain for alkaline phenol wastewater treatment in sequencing batch reactor

Zhang

et al. 2011

World J Microbiol Biotechnol

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A novel alkali-tolerant strain JY-2, which could utilize phenol as sole source of carbon and energy, was isolated from activated sludge. It was identified as Pseudomonas sp. by 16S rDNA sequencing analysis. The appropriate conditions for strain growth and phenol biodegradation were as follows: pH 8.0-10.0 and temperature 23-30°C. With initial phenol concentrations of 225, 400, 550 and 750 mg/l, the degradation efficiencies were 94.9, 93.3, 89.3 and 48.2% within 40 h at pH 10.0 and 30°C, respectively. The alkaline phenol-containing wastewater treatment augmented with strain JY-2 in sequencing batch reactor (SBR) system was investigated, which suggested that the bioaugmented (BA) system exhibited the better performance for adjusting high pH to neutral value than the non-bioaugmented (non-BA) one. Also, the BA system showed strong abilities for phenol degradation and maintaining good sedimentation coefficient (SV 30 ). The microbial community dynamics of both sequencing batch reactor (SBR) systems were analyzed by Denaturing Gradient Gel Electrophoresis (DGGE) technique, which showed substantial changes between the two systems. This study suggests that it is feasible to treat alkaline phenol-containing wastewater augmented with strain JY-2.

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Section: Methodsmentioning

confidence: 99%

Bioaugmentation with a novel alkali-tolerant Pseudomonas strain for alkaline phenol wastewater treatment in sequencing batch reactor

Zhang

et al. 2011

World J Microbiol Biotechnol

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“…These include the direct determination of the substrate content on the adsorbent (Putz et al 2005;Ha et al 2000), the indirect measurement of substrate consumption by measuring carbon dioxide production Speitel et al 1989) and the measurement of oxygen uptake by respirometry (Lee and Lim 2005;Orshansky and Narkis 1997;Ivancev-Tumbas et al 1998;Ng et al 2009). Besides chloride ion release from chlorinated adsorbates such as trichloroethylene (TCE) (Nakano et al 2000) and 4-chlorophenol (Caldeira et al 1999) has also been used as an indirect method to measure biodegradation of organic matter adsorbed on activated carbon.…”

Section: Efficiency Of Bioregenerationmentioning

confidence: 98%

Microbial regeneration of spent activated carbon dispersed with organic contaminants: mechanism, efficiency, and kinetic models

Nath¹,

Bhakhar²

2010

Environ Sci Pollut Res

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“…It is well known that in biofilm reactors, with activated carbon as support material, the organic polluting compounds are adsorbed by carbon, and by microbial action the adsorbent is regenerated [25]. The role of bioregeneration process in renewing the adsorbent surface for further adsorption is well recognized [25,26]. However, the use of biofilm reactors packed with powdered or granulated activated carbon presents some problems.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, to remove azo compounds from textile wastewaters, the use of packed biofilm reactors, particularly when simultaneous adsorption and biodegradation processes are carried out in the support material, could be an economic solution. It is well known that in biofilm reactors, with activated carbon as support material, the organic polluting compounds are adsorbed by carbon, and by microbial action the adsorbent is regenerated [25]. The role of bioregeneration process in renewing the adsorbent surface for further adsorption is well recognized [25,26].…”

Section: Introductionmentioning

confidence: 99%

Aerobic Biodegradation of a Sulfonated Phenylazonaphthol Dye by a Bacterial Community Immobilized in a Multistage Packed-Bed BAC Reactor

Ruiz-Arias

Juárez‐Ramírez

Cobos-Vasconcelos

et al. 2010

Appl Biochem Biotechnol

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A microbial community able to aerobically degrade the azo dye Acid Orange 7 was selected from riparian or lacustrine sediments collected at sites receiving textile wastewaters. Three bacterial strains, pertaining to the genera Pseudomonas, Arthrobacter, and Rhizobium, constitute the selected community. The biodegradation of AO7 was carried out in batch-suspended cell culture and in a continuously operated multistage packed-bed BAC reactor. The rapid decolorization observed in batch culture, joined to a delay of about 24 h in COD removal and cell growth, suggests that enzymes involved in biodegradation of the aromatic amines generated after AO7 azo-bond cleavage (1-amino-2-naphthol [1-A2N] and 4-aminobenzenesulfonic acid [4-ABS]), are inducible in this microbial consortium. After this presumptive induction period, the accumulated byproducts, measured through COD, were partially metabolized and transformed in cell mass. At all azo dye loading rates used, complete removal of AO7 and 1-A2N was obtained in the multistage packed-bed BAC reactor (PBR).; however, the overall COD (eta ( COD )) and 4-ABS (eta ( ABS )) removal efficiencies obtained in steady state continuous culture were about 90%. Considering the toxicity of 1-A2N, its complete removal has particular relevance. In the first stages of the packed-bed BAC reactor (Fig. 4a-c), major removal was observed. In the last stage, only a slight removal of COD and 4-ABS was obtained. Comparing to several reported studies, the continuously operated multistage packed-bed BAC reactor showed similar or superior results. In addition, the operation of large-packed-bed BAC reactors could be improved by using several shallow BAC bed stages, because the pressure drop caused by bed compaction of a support material constituted by small and fragile particles can be reduced.

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Bioregeneration of powdered activated carbon in the treatment of alkyl-substituted phenolic compounds in simultaneous adsorption and biodegradation processes

Cited by 38 publications

References 13 publications

Bioaugmentation with a novel alkali-tolerant Pseudomonas strain for alkaline phenol wastewater treatment in sequencing batch reactor

Bioaugmentation with a novel alkali-tolerant Pseudomonas strain for alkaline phenol wastewater treatment in sequencing batch reactor

Microbial regeneration of spent activated carbon dispersed with organic contaminants: mechanism, efficiency, and kinetic models

Aerobic Biodegradation of a Sulfonated Phenylazonaphthol Dye by a Bacterial Community Immobilized in a Multistage Packed-Bed BAC Reactor

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