Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13042
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dc.contributor.authorBoonnorat J.
dc.contributor.authorBoonapatcharoen N.
dc.contributor.authorPrachanurak P.
dc.contributor.authorHonda R.
dc.contributor.authorPhanwilai S.
dc.date.accessioned2021-04-05T03:22:06Z-
dc.date.available2021-04-05T03:22:06Z-
dc.date.issued2017
dc.identifier.issn489697
dc.identifier.other2-s2.0-85015699429
dc.identifier.urihttps://ir.swu.ac.th/jspui/handle/123456789/13042-
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85015699429&doi=10.1016%2fj.scitotenv.2017.03.078&partnerID=40&md5=ba289363ebf03f53fda43c3944a2ff4e
dc.description.abstractThis research has assessed the removal efficiencies of toxic compounds in the high strength wastewater (the leachate and agriculture wastewater mixture) using the activated sludge (AS) and membrane bioreactor (MBR) technologies under two carbon to nitrogen (C/N) ratios (C/N 14 and 6) and two toxic compounds concentrations (8–396 μg/L and 1000 μg/L). In addition, the toxicity evaluations of the AS and MBR effluents to the aquatic environment were undertaken at five effluent dilution ratios (10, 20, 30, 50 and 70% v/v). The findings indicate that the AS treatment performance could be enhanced by the elevation of the nitrogen concentration. Specifically, the C/N 6 environment helps promote the bacterial growth, particularly heterotrophic nitrifying bacteria (HNB) and nitrifying bacteria (NB), which produce the enzymes crucial to the toxic compounds degradation. The improved biodegradation makes the effluents less toxic to the aquatic environment, as evidenced by the lower mortality rates of both experimental fish species raised in the nitrogen-elevated diluted AS effluents. On the other hand, the elevated nitrogen concentration minimally enhances the MBR treatment performance, given the fact that the MBR technology is in itself a biological treatment scheme with very high compounds removal capability. Despite its lower toxic compounds removal efficiency, the AS technology is simple, inexpensive and operationally-friendly, rendering the system more applicable to the treatment operation constrained by the financial, manpower and technological considerations. © 2017 Elsevier B.V.
dc.subjectActivated sludge process
dc.subjectBacteria
dc.subjectBiodegradation
dc.subjectBioreactors
dc.subjectEfficiency
dc.subjectEffluents
dc.subjectNitrification
dc.subjectNitrogen
dc.subjectNitrogen removal
dc.subjectToxicity
dc.subjectActivated sludge
dc.subjectC/N ratio
dc.subjectHigh strength wastewater
dc.subjectMembrane bio reactor (MBR)
dc.subjectMembrane bioreactor system
dc.subjectMembrane bioreactor technology
dc.subjectNitrogen concentrations
dc.subjectToxic compounds
dc.subjectWastewater treatment
dc.subject4,4' isopropylidenediphenol
dc.subjectcarbamazepine
dc.subjectcarbon
dc.subjectdi (ethylhexyl) phthalate
dc.subjectdiclofenac
dc.subjectdiethyltoluamide
dc.subjectnitrogen
dc.subjectphthalic acid
dc.subjectphthalic acid dibutyl ester
dc.subjectunclassified drug
dc.subjectnitrogen
dc.subjectactivated sludge
dc.subjectbiodegradation
dc.subjectbioreactor
dc.subjectconcentration (composition)
dc.subjectmembrane
dc.subjectnitrogen
dc.subjecttoxic material
dc.subjecttoxicity
dc.subjectwastewater treatment
dc.subjectactivated sludge
dc.subjectadsorption
dc.subjectAgrobacterium
dc.subjectaquatic environment
dc.subjectArticle
dc.subjectBacillus
dc.subjectbacterial growth
dc.subjectbiodegradation
dc.subjectBurkholderia
dc.subjectenvironmental impact assessment
dc.subjectfish
dc.subjecthydrophilicity
dc.subjecthydrophobicity
dc.subjectmembrane reactor
dc.subjectmicrobial community
dc.subjectnitrifying bacterium
dc.subjectnonhuman
dc.subjectOreochromis niloticus
dc.subjectpopulation abundance
dc.subjectPseudomonas
dc.subjectRhodopseudomonas
dc.subjectspecies diversity
dc.subjectSphingomonas
dc.subjecttoxicity testing
dc.subjectwaste component removal
dc.subjectwaste water management
dc.subjectwater pollution
dc.subjectanimal
dc.subjectartificial membrane
dc.subjectbioreactor
dc.subjectchemistry
dc.subjectmicrobiology
dc.subjectsewage
dc.subjecttoxicity
dc.subjectwaste water
dc.subjectBacteria (microorganisms)
dc.subjectAnimals
dc.subjectBioreactors
dc.subjectCarbon
dc.subjectFishes
dc.subjectMembranes, Artificial
dc.subjectNitrogen
dc.subjectSewage
dc.subjectToxicity Tests
dc.subjectWaste Disposal, Fluid
dc.subjectWaste Water
dc.titleToxic compounds biodegradation and toxicity of high strength wastewater treated under elevated nitrogen concentration in the activated sludge and membrane bioreactor systems
dc.typeArticle
dc.rights.holderScopus
dc.identifier.bibliograpycitationScience of the Total Environment. Vol 592, (2017), p.252-261
dc.identifier.doi10.1016/j.scitotenv.2017.03.078
Appears in Collections:Scopus 1983-2021

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