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Article: Biodegradation and biotransformation of wastewater organics as precursors of disinfection byproducts in water

TitleBiodegradation and biotransformation of wastewater organics as precursors of disinfection byproducts in water
Authors
KeywordsBiodegradation
DBP precursors
Disinfection byproducts (DBPs)
Drinking water quality
Wastewater organics
Water reuse
Issue Date2010
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphere
Citation
Chemosphere, 2010, v. 81 n. 9, p. 1075-1083 How to Cite?
AbstractLaboratory experiments were carried out to investigate wastewater organics as the precursors of disinfection byproducts (DBPs) in drinking water supply. The focus was on the change in wastewater DBP precursors during biological degradation under simulated natural conditions. The wastewater and its treated secondary effluent were characterized for DBP formation potential (DBPFP) and DBP speciation profile, including trihalomethanes, haloacetic acids, chloral hydrate, and nitrogen-containing DBPs. Several model organic compounds, including humic acid, tannic acid, glucose, starch, glycine, and bovine serum albumin (BSA), were used to represent the different types of organic pollutants in wastewater discharge. The results show that the DBPFP of wastewater decreased after biodegradation, but the remaining organic matter had a greater DBPFP yield with chlorine. Different model organics displayed different changes in DBPFP during biodegradation. The DBPFP remained largely unchanged for the glycine solution, decreased greatly for the tannic acid and BSA solutions, and increased nearly 3-fold for the glucose and starch solutions after 10d of biodegradation. Meanwhile, the DBPFP yield increased from 3 for glycine to 51μg DBP mg-1 C for its degradation residue, and from 1 for glucose and starch to 87 and 38μg DBP mg-1 C for their organic residues, respectively. Although biodegradation may effectively remove some DBP precursors, biotransformation during the process produces new DBP precursors in the form of soluble microbial products (SMPs). The experimental results reveal that SMPs may be an important source of wastewater-derived DBP precursors in natural waters. © 2010 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/137234
ISSN
2015 Impact Factor: 3.698
2015 SCImago Journal Rankings: 1.536
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council (RGC) of the Hong Kong SAR GovernmentHKU7149/E06
HKU7144/E07
University of Hong Kong
Funding Information:

This research was supported by Grants HKU7149/E06 and HKU7144/E07 from the Research Grants Council (RGC) of the Hong Kong SAR Government and the SRT funding for Sustainable Water from The University of Hong Kong. The technical assistance of Mr. Keith C.H. Wong is greatly appreciated.

References

 

DC FieldValueLanguage
dc.contributor.authorLiu, JLen_HK
dc.contributor.authorLi, XYen_HK
dc.date.accessioned2011-08-26T14:21:38Z-
dc.date.available2011-08-26T14:21:38Z-
dc.date.issued2010en_HK
dc.identifier.citationChemosphere, 2010, v. 81 n. 9, p. 1075-1083en_HK
dc.identifier.issn0045-6535en_HK
dc.identifier.urihttp://hdl.handle.net/10722/137234-
dc.description.abstractLaboratory experiments were carried out to investigate wastewater organics as the precursors of disinfection byproducts (DBPs) in drinking water supply. The focus was on the change in wastewater DBP precursors during biological degradation under simulated natural conditions. The wastewater and its treated secondary effluent were characterized for DBP formation potential (DBPFP) and DBP speciation profile, including trihalomethanes, haloacetic acids, chloral hydrate, and nitrogen-containing DBPs. Several model organic compounds, including humic acid, tannic acid, glucose, starch, glycine, and bovine serum albumin (BSA), were used to represent the different types of organic pollutants in wastewater discharge. The results show that the DBPFP of wastewater decreased after biodegradation, but the remaining organic matter had a greater DBPFP yield with chlorine. Different model organics displayed different changes in DBPFP during biodegradation. The DBPFP remained largely unchanged for the glycine solution, decreased greatly for the tannic acid and BSA solutions, and increased nearly 3-fold for the glucose and starch solutions after 10d of biodegradation. Meanwhile, the DBPFP yield increased from 3 for glycine to 51μg DBP mg-1 C for its degradation residue, and from 1 for glucose and starch to 87 and 38μg DBP mg-1 C for their organic residues, respectively. Although biodegradation may effectively remove some DBP precursors, biotransformation during the process produces new DBP precursors in the form of soluble microbial products (SMPs). The experimental results reveal that SMPs may be an important source of wastewater-derived DBP precursors in natural waters. © 2010 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphereen_HK
dc.relation.ispartofChemosphereen_HK
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Chemosphere. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemosphere, 2010, v. 81 n. 9, p. 1075–1083. DOI: http://dx.doi.org/10.1016/j.chemosphere.2010.09.041-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectBiodegradationen_HK
dc.subjectDBP precursorsen_HK
dc.subjectDisinfection byproducts (DBPs)en_HK
dc.subjectDrinking water qualityen_HK
dc.subjectWastewater organicsen_HK
dc.subjectWater reuseen_HK
dc.subject.meshBiodegradation, Environmental-
dc.subject.meshBiotransformation-
dc.subject.meshDisinfectants - metabolism-
dc.subject.meshWater Pollutants, Chemical - metabolism-
dc.subject.meshWater Supply - analysis-
dc.titleBiodegradation and biotransformation of wastewater organics as precursors of disinfection byproducts in wateren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0045-6535&volume=81&issue=9&spage=1075–1083&epage=&date=2010&atitle=Biodegradation+and+biotransformation+of+wastewater+organics+as+precursors+of+disinfection+byproducts+in+water-
dc.identifier.emailLi, XY:xlia@hkucc.hku.hken_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.chemosphere.2010.09.041en_HK
dc.identifier.pmid20943251-
dc.identifier.scopuseid_2-s2.0-78049247535en_HK
dc.identifier.hkuros190455en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78049247535&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume81en_HK
dc.identifier.issue9en_HK
dc.identifier.spage1075en_HK
dc.identifier.epage1083en_HK
dc.identifier.eissn1879-1298-
dc.identifier.isiWOS:000284658900004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLiu, JL=37026611900en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.citeulike8039225-

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