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Effects of hydraulic retention time and carbon to nitrogen ratio on micro-pollutant biodegradation in membrane bioreactor for leachate treatment

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dc.contributor.authorBoonnorat J.
dc.contributor.authorTechkarnjanaruk S.
dc.contributor.authorHonda R.
dc.contributor.authorPrachanurak P.
dc.date.accessioned2021-04-05T03:23:26Z
dc.date.available2021-04-05T03:23:26Z
dc.date.issued2016
dc.date.issuedBE2559
dc.description.abstractThis research investigated the biodegradation of the micro-pollutants in leachate by the membrane bioreactor (MBR) system under six treatment conditions, comprising two C/N ratios (6, 10) and three hydraulic retention time (HRT) durations (6, 12, 24 h). The experimental results indicated that the C/N 6 environment was more advantageous to the bacterial growth. The bacterial communities residing in the sludge were those of heterotrophic bacteria (HB), heterotrophic nitrifying bacteria (HNB) and ammonia oxidizing bacteria (AOB). It was found that HB and HNB produced phenol hydroxylase (PH), esterase (EST), phthalate dioxygenase (PDO) and laccase (LAC) and also enhanced the biodegradation rate constants (k) in the system. At the same time, AOB promoted the production of HB and HNB. The findings also revealed that the 12 h HRT was the optimal condition with regard to the highest growth of the bacteria responsible for the biodegradation of phenols and phthalates. Meanwhile, the longer HRT duration (i.e. 24 h) was required to effectively bio-degrade carbamazepine (CBZ), N,N-diethyl-m-toluamide (DEET) and diclofenac (DCF). © 2016 Elsevier Ltd
dc.format.mimetypeapplication/pdf
dc.identifier.citationBioresource Technology. Vol 219, (2016), p.53-63
dc.identifier.doi10.1016/j.biortech.2016.07.094
dc.identifier.issn9608524
dc.identifier.other2-s2.0-84979774564
dc.identifier.urihttps://hdl.handle.net/20.500.14740/5053
dc.rights.holderมหาวิทยาลัยศรีนครินทรวิโรฒ
dc.subject.otherBacteria
dc.subject.otherBioconversion
dc.subject.otherBioreactors
dc.subject.otherCarbon
dc.subject.otherEnzyme activity
dc.subject.otherEnzymes
dc.subject.otherEsters
dc.subject.otherLeachate treatment
dc.subject.otherNitrification
dc.subject.otherPhenols
dc.subject.otherPollution
dc.subject.otherPotassium compounds
dc.subject.otherRate constants
dc.subject.otherC/N ratio
dc.subject.otherHydraulic retention time
dc.subject.otherLeachates
dc.subject.otherMembrane bio reactor (MBR)
dc.subject.otherMicropollutants
dc.subject.otherBiodegradation
dc.subject.other2,6 di tert butylphenol
dc.subject.other4,4' isopropylidenediphenol
dc.subject.otherCarbamazepine
dc.subject.otherCarbon
dc.subject.otherDiclofenac
dc.subject.otherDiethyltoluamide
dc.subject.otherDioxygenase
dc.subject.otherEndocrine disruptor
dc.subject.otherEsterase
dc.subject.otherLaccase
dc.subject.otherNitrogen
dc.subject.otherOxygenase
dc.subject.otherPesticide
dc.subject.otherPhenol derivative
dc.subject.otherPhenol hydroxylase
dc.subject.otherPhthalate dioxygenase
dc.subject.otherPhthalic acid
dc.subject.otherUnclassified drug
dc.subject.otherArtificial membrane
dc.subject.otherCarbon
dc.subject.otherNitrogen
dc.subject.otherSewage
dc.subject.otherWater pollutant
dc.subject.otherBacterium
dc.subject.otherBiodegradation
dc.subject.otherBioreactor
dc.subject.otherCarbon isotope
dc.subject.otherEnzyme activity
dc.subject.otherExperimental study
dc.subject.otherGrowth rate
dc.subject.otherIsotopic ratio
dc.subject.otherLeachate
dc.subject.otherMicrobial activity
dc.subject.otherNitrogen isotope
dc.subject.otherPollutant
dc.subject.otherWaste treatment
dc.subject.otherWater retention
dc.subject.otherAmmonia oxidizing bacterium
dc.subject.otherArticle
dc.subject.otherBiodegradation
dc.subject.otherHydraulic retention time
dc.subject.otherLeaching
dc.subject.otherMembrane reactor
dc.subject.otherMicrobial community
dc.subject.otherNitrifying bacterium
dc.subject.otherNonhuman
dc.subject.otherPollutant
dc.subject.otherPriority journal
dc.subject.otherSludge
dc.subject.otherTime
dc.subject.otherArtificial membrane
dc.subject.otherBacterium
dc.subject.otherBioreactor
dc.subject.otherBioremediation
dc.subject.otherDenaturing gradient gel electrophoresis
dc.subject.otherHeterotrophy
dc.subject.otherIsolation and purification
dc.subject.otherKinetics
dc.subject.otherMetabolism
dc.subject.otherMicrobiology
dc.subject.otherNitrification
dc.subject.otherPolyacrylamide gel electrophoresis
dc.subject.otherPolymerase chain reaction
dc.subject.otherReal time polymerase chain reaction
dc.subject.otherSewage
dc.subject.otherTime factor
dc.subject.otherWater pollutant
dc.subject.otherBacteria (microorganisms)
dc.subject.otherNitrosomonadales
dc.subject.otherBacteria
dc.subject.otherBiodegradation, Environmental
dc.subject.otherBioreactors
dc.subject.otherCarbon
dc.subject.otherDenaturing Gradient Gel Electrophoresis
dc.subject.otherElectrophoresis, Polyacrylamide Gel
dc.subject.otherHeterotrophic Processes
dc.subject.otherKinetics
dc.subject.otherMembranes, Artificial
dc.subject.otherNitrification
dc.subject.otherNitrogen
dc.subject.otherPolymerase Chain Reaction
dc.subject.otherReal-Time Polymerase Chain Reaction
dc.subject.otherSewage
dc.subject.otherTime Factors
dc.subject.otherWater Pollutants, Chemical
dc.titleEffects of hydraulic retention time and carbon to nitrogen ratio on micro-pollutant biodegradation in membrane bioreactor for leachate treatment
dc.typeArticle
dspace.entity.typePublication
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