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Impact of pre-ozonation on disinfection by-product formation and speciation from chlor(am)ination of algal organic matter of Microcystis aeruginosa.
Ecotoxicol Environ Saf. 2015 Oct; 120:256-62.EE

Abstract

The increasing use of algal-impacted source waters is increasing concerns over exposure to disinfection byproducts (DBPs) in drinking water disinfection, due to the higher concentrations of DBP precursors in these waters. The impact of pre-ozonation on the formation and speciation of DBPs during subsequent chlorination and chloramination of algal organic matter (AOM), including extracellular organic matter (EOM) and intracellular organic matter (IOM), was investigated. During subsequent chlorination, ozonation pretreatment reduced the formation of haloacetonitriles from EOM, but increased the yields of trihalomethanes, dihaloacetic acid and trichloronitromethane from both EOM and IOM. While in chloramination, pre-ozonation remarkably enhanced the yields of several carbonaceous DBPs from IOM, and significantly minimized the nitrogenous DBP precursors. Also, the yield of 1,1-dichloro-2-propanone from IOM was decreased by 24.0% after pre-ozonation during chloramination. Both increases and decreases in the bromine substitution factors (BSF) of AOM were observed with ozone pretreatment at the low bromide level (50μg/L). However, pre-ozonation played little impact on the bromide substitution in DBPs at the high bromide level (500μg/L). This information was used to guide the design and practical operation of pre-ozonation in drinking water treatment plants using algae-rich waters.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Zhu M
State Key Laboratory of Pollution Control and Resource Reuse, College of Environment Science and Engineering, Tongji University, Shanghai 200092, China; Jiangsu post & telecommunications planning and designing institute CO., LTD, Nanjing 210019, China.
Gao N
State Key Laboratory of Pollution Control and Resource Reuse, College of Environment Science and Engineering, Tongji University, Shanghai 200092, China. Electronic address: gaonaiyun1@126.com.
Chu W
State Key Laboratory of Pollution Control and Resource Reuse, College of Environment Science and Engineering, Tongji University, Shanghai 200092, China. Electronic address: waterman@tongji.edu.cn.
Zhou S
Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha 410082, China.
Zhang Z
Yixing Jiubin Waterworks, Yixing 214200, China.
Xu Y
Yixing Jiubin Waterworks, Yixing 214200, China.
Dai Q
Yixing Jiubin Waterworks, Yixing 214200, China.

MeSH

BromidesBromineDisinfectantsDrinking WaterHalogenationHydrocarbons, ChlorinatedMicrocystisOzoneTrihalomethanesWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26093107

Citation

Zhu, Mingqiu, et al. "Impact of Pre-ozonation On Disinfection By-product Formation and Speciation From Chlor(am)ination of Algal Organic Matter of Microcystis Aeruginosa." Ecotoxicology and Environmental Safety, vol. 120, 2015, pp. 256-62.
Zhu M, Gao N, Chu W, et al. Impact of pre-ozonation on disinfection by-product formation and speciation from chlor(am)ination of algal organic matter of Microcystis aeruginosa. Ecotoxicol Environ Saf. 2015;120:256-62.
Zhu, M., Gao, N., Chu, W., Zhou, S., Zhang, Z., Xu, Y., & Dai, Q. (2015). Impact of pre-ozonation on disinfection by-product formation and speciation from chlor(am)ination of algal organic matter of Microcystis aeruginosa. Ecotoxicology and Environmental Safety, 120, 256-62. https://doi.org/10.1016/j.ecoenv.2015.05.048
Zhu M, et al. Impact of Pre-ozonation On Disinfection By-product Formation and Speciation From Chlor(am)ination of Algal Organic Matter of Microcystis Aeruginosa. Ecotoxicol Environ Saf. 2015;120:256-62. PubMed PMID: 26093107.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Impact of pre-ozonation on disinfection by-product formation and speciation from chlor(am)ination of algal organic matter of Microcystis aeruginosa. AU - Zhu,Mingqiu, AU - Gao,Naiyun, AU - Chu,Wenhai, AU - Zhou,Shiqing, AU - Zhang,Zhengde, AU - Xu,Yaqun, AU - Dai,Qi, Y1 - 2015/06/17/ PY - 2014/11/14/received PY - 2015/05/27/revised PY - 2015/05/29/accepted PY - 2015/6/21/entrez PY - 2015/6/21/pubmed PY - 2016/3/5/medline KW - Algal organic matter KW - Bromine substitution factors KW - Chloramination KW - Chlorination KW - Disinfection by-products KW - Pre-ozonation SP - 256 EP - 62 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 120 N2 - The increasing use of algal-impacted source waters is increasing concerns over exposure to disinfection byproducts (DBPs) in drinking water disinfection, due to the higher concentrations of DBP precursors in these waters. The impact of pre-ozonation on the formation and speciation of DBPs during subsequent chlorination and chloramination of algal organic matter (AOM), including extracellular organic matter (EOM) and intracellular organic matter (IOM), was investigated. During subsequent chlorination, ozonation pretreatment reduced the formation of haloacetonitriles from EOM, but increased the yields of trihalomethanes, dihaloacetic acid and trichloronitromethane from both EOM and IOM. While in chloramination, pre-ozonation remarkably enhanced the yields of several carbonaceous DBPs from IOM, and significantly minimized the nitrogenous DBP precursors. Also, the yield of 1,1-dichloro-2-propanone from IOM was decreased by 24.0% after pre-ozonation during chloramination. Both increases and decreases in the bromine substitution factors (BSF) of AOM were observed with ozone pretreatment at the low bromide level (50μg/L). However, pre-ozonation played little impact on the bromide substitution in DBPs at the high bromide level (500μg/L). This information was used to guide the design and practical operation of pre-ozonation in drinking water treatment plants using algae-rich waters. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/26093107/Impact_of_pre_ozonation_on_disinfection_by_product_formation_and_speciation_from_chlor_am_ination_of_algal_organic_matter_of_Microcystis_aeruginosa_ DB - PRIME DP - Unbound Medicine ER -