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

2
0

Issued Date

2016

Resource Type

Article

File Type

application/pdf

ISSN

9608524

DOI

10.1016/j.biortech.2016.07.094

Other identifier(s)

2-s2.0-84979774564

Rights Holder(s)

มหาวิทยาลัยศรีนครินทรวิโรฒ

Bibliographic Citation

Bioresource Technology. Vol 219, (2016), p.53-63

Suggested Citation

Boonnorat J., Techkarnjanaruk S., Honda R., Prachanurak P. Effects of hydraulic retention time and carbon to nitrogen ratio on micro-pollutant biodegradation in membrane bioreactor for leachate treatment. Bioresource Technology. Vol 219, (2016), p.53-63. doi:10.1016/j.biortech.2016.07.094 Retrieved from: https://hdl.handle.net/20.500.14740/5053

Title

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

Author(s)

Boonnorat J.
 Techkarnjanaruk S.
 Honda R.
 Prachanurak P.

Abstract

This 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

Subject(s)

Bacteria
 Bioconversion
 Bioreactors
 Carbon
 Enzyme activity
 Enzymes
 Esters
 Leachate treatment
 Nitrification
 Phenols
 Pollution
 Potassium compounds
 Rate constants
 C/N ratio
 Hydraulic retention time
 Leachates
 Membrane bio reactor (MBR)
 Micropollutants
 Biodegradation
 2,6 di tert butylphenol
 4,4' isopropylidenediphenol
 Carbamazepine
 Carbon
 Diclofenac
 Diethyltoluamide
 Dioxygenase
 Endocrine disruptor
 Esterase
 Laccase
 Nitrogen
 Oxygenase
 Pesticide
 Phenol derivative
 Phenol hydroxylase
 Phthalate dioxygenase
 Phthalic acid
 Unclassified drug
 Artificial membrane
 Carbon
 Nitrogen
 Sewage
 Water pollutant
 Bacterium
 Biodegradation
 Bioreactor
 Carbon isotope
 Enzyme activity
 Experimental study
 Growth rate
 Isotopic ratio
 Leachate
 Microbial activity
 Nitrogen isotope
 Pollutant
 Waste treatment
 Water retention
 Ammonia oxidizing bacterium
 Article
 Biodegradation
 Hydraulic retention time
 Leaching
 Membrane reactor
 Microbial community
 Nitrifying bacterium
 Nonhuman
 Pollutant
 Priority journal
 Sludge
 Time
 Artificial membrane
 Bacterium
 Bioreactor
 Bioremediation
 Denaturing gradient gel electrophoresis
 Heterotrophy
 Isolation and purification
 Kinetics
 Metabolism
 Microbiology
 Nitrification
 Polyacrylamide gel electrophoresis
 Polymerase chain reaction
 Real time polymerase chain reaction
 Sewage
 Time factor
 Water pollutant
 Bacteria (microorganisms)
 Nitrosomonadales
 Bacteria
 Biodegradation, Environmental
 Bioreactors
 Carbon
 Denaturing Gradient Gel Electrophoresis
 Electrophoresis, Polyacrylamide Gel
 Heterotrophic Processes
 Kinetics
 Membranes, Artificial
 Nitrification
 Nitrogen
 Polymerase Chain Reaction
 Real-Time Polymerase Chain Reaction
 Sewage
 Time Factors
 Water Pollutants, Chemical

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URI

https://hdl.handle.net/20.500.14740/5053

Collections

Scopus: Year 1983-2021

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