Fate of 2,6-dihydroxybenzoic acid and its inhibitory impact on the biodegradation of peptone under aerobic conditions

Orhon, Derin; Çokgör, Emine Ubay; Katipoglu, Tugce; İnsel, Güçlü; Karahan, Özlem

doi:10.1016/j.biortech.2009.09.094

Cited by 15 publications

(7 citation statements)

References 32 publications

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“…5e, f), OUR values reached the endogenous level in the following 15 h, suggesting the oxidation of an endogenous carbon source during phase II. Obtained OUR profiles are typical for peptone biodegradation, and they were in agreement with those reported by other authors (Orhon et al 2009(Orhon et al , 2010Cokgor et al 2011).…”

Section: Respirometric Measurementssupporting

confidence: 91%

Interdependence between the aerobic degradation of BPA and readily biodegradable substrates by activated sludge in semi-continuous reactors

2018

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The objective of the present work was to analyze the interrelationship between the aerobic degradation of BPA and readily biodegradable substrates by activated sludge (AS) in semi-continuous reactors (SCRs). AS were obtained from three SCRs fed with glucose, acetate or peptone. AS from these reactors were used as inocula for three SCRs that were fed with each biogenic substrate, and for three SCRs that were fed with the biogenic substrate and BPA. In all cases, dissolved organic carbon (DOC), BPA, total suspended solids (TSS) and respirometric measurements were performed. Although BPA could be removed in the presence of all the tested substrates, AS grown on acetate exhibited the longest acclimation to BPA. Reactors fed with peptone attained the lowest TSS concentration; however, these AS had the highest specific BPA degradation rate. Specific DOC removal rates and respirometric measurements demonstrated that the presence of BPA had a negligible effect on the removal of the tested substrates. A mathematical model was developed to represent the evolution of TSS and DOC in the SCRs as a function of the operation cycle. Results suggest that the main effect of BPA on AS was to increase the generation of microbial soluble products. This work helps to understand the relationship between the biodegradation of BPA and readily biodegradable substrates.

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Section: Respirometric Measurementssupporting

confidence: 91%

Interdependence between the aerobic degradation of BPA and readily biodegradable substrates by activated sludge in semi-continuous reactors

2018

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“…In the earlier phases of SBR operation with continuous 2,6-DHBA feeding, this chemical was not removed and totally remained in solution; its biodegradation took place at a slow rate only after 15 days (Orhon et al, 2009b). As clearly indicated in Fig.…”

Section: Biodegradation Kinetics Of 26-dhba Onlymentioning

confidence: 93%

“…This step is well interpreted in the literature by means of cleavage of the aromatic ring, a common pathway suggested for phenolic compounds (Fritsche and Hofrichter, 2005). In the adopted model, a similar overall disintegration step was formulated which breaks the 2,6-DHBA concentration, C B down to readily biodegradable COD, S SB (ii) the development of a selective group of biomass (X HB ) through acclimation, which can selectively utilize 2,6-DHBA as the organic carbon source (Orhon et al, 2009b). This observation was accounted for in the model by including a specific group of active biomass, X HB capable of utilizing S SB for microbial growth, the same way as S S .…”

Section: Model Structurementioning

confidence: 99%

“…Furthermore, it can be easily adjusted to sustain the same characteristics throughout the experiments. Different phases of the study covered the following: (i) biodegradation kinetics of peptone mixture (Orhon et al, 2009a); (ii) the adverse impact of continuous 2,6-DHBA feeding on peptone mixture utilization and acclimation of the mixed culture to 2,6-DHBA (Orhon et al, 2009b) and the effect of sludge age on the impact of 2,6-DHBA (Katipoglu et al, 2010). The objective of the study was to assess the biodegradation kinetics of the peptone/2,6-DHBA mixture by an acclimated microbial culture.…”

Section: Introductionmentioning

confidence: 99%

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Biodegradation kinetics of peptone and 2,6-dihydroxybenzoic acid by acclimated dual microbial culture

Çokgör

İnsel

Katipoglu

et al. 2011

Bioresource Technology

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“…For examples, beneficial effects on xenobiotic degradation were found with the addition of conventional carbon sources such as glucose, sodium glutamate, peptone, yeast extract, and downstream intermediate products of xenobiotic metabolism (Fakhruddin and Quilty 2005;Oehmen et al 2013;Lob and Tar 2000;Douglas and Steven 1994); supplementing biogenic substrates helped shorten the lag time during activated sludge acclimation to a xenobiotic . Some researchers reported biogenic substrates did not affect xenobiotic degradation, such as peptone on 2,6-dihydroxybenzoic acid (Orhon et al 2010) and on 4-chlorophenol (Sahinkaya and Dilek 2006). Still further contradiction, some studies indicated xenobiotic degradation rate was lowered by the addition of alternative carbon sources such as glucose on p-nitrophenol (Kulkarni and Chaudhari 2006) and glucose or amino acids on xylene and toluene (Swindoll et al 1988).…”

Section: Introductionmentioning

confidence: 93%

Conditions for supplemental biogenic substrates to enhance activated sludge degradation of xenobiotic

Nguyen

Chong

2015

Appl Microbiol Biotechnol

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The effects of biogenic presence on the degradation of xenobiotic organics by natural microbial populations have been reported as either advantageous or disadvantageous. The inconsistency of the reports implies there could be a turning point from disadvantageous to advantageous outcomes so that conditions may exist that could bring an optimum advantage. This study tested the supplementations of varying concentrations of sucrose and peptone, separately and combined, to acclimated activated sludge degradation of xenobiotic 2,4-D, while other operational and microbiological conditions were held constant. Our test results showed that biogenic may indeed enhance or slow down xenobiotic degradation rates. The highest enhancements exist at concentrations of 50 and 80 mg/L, respectively, for sucrose and peptone when supplemented separately, and 20 mg/L sucrose and 40 mg/L peptone combined. Conditions for advantageous biogenic supplementation were identified for activated sludge degradation of a xenobiotic; specifically, the highest degradation rate enhancements occurred when biogenic supplementation was approximately 0.5 to 0.7 the concentration of 2,4-D base on chemical oxygen demand (COD), which brought a biomass yield of approximately double that yielded by 2,4-D. Kinetics analyses provided clues for the possible causes of advantageous and disadvantageous effects due to biogenic supplementation.

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Fate of 2,6-dihydroxybenzoic acid and its inhibitory impact on the biodegradation of peptone under aerobic conditions

Cited by 15 publications

References 32 publications

Interdependence between the aerobic degradation of BPA and readily biodegradable substrates by activated sludge in semi-continuous reactors

Interdependence between the aerobic degradation of BPA and readily biodegradable substrates by activated sludge in semi-continuous reactors

Biodegradation kinetics of peptone and 2,6-dihydroxybenzoic acid by acclimated dual microbial culture

Conditions for supplemental biogenic substrates to enhance activated sludge degradation of xenobiotic

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