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Comparative mammalian cell cytotoxicity of wastewater with elevated bromide and iodide after chlorination, chloramination, or ozonation.
J Environ Sci (China). 2017 Aug; 58:296-301.JE

Abstract

Recycling wastewater is becoming more common as communities around the world try to better control their water resources against an increased frequency of either prolonged droughts or intense flooding. For communities in coastal areas, wastewaters may contain elevated levels of bromide (Br-) and iodide (I-) from seawater intrusion or high mineral content of source waters. Disinfection of such wastewater is mandatory to prevent the spread of pathogens, however little is known about the toxicity of wastewater after disinfection in the presence of Br- and I-. In this study we compared the induction of chronic cytotoxicity in mammalian cells in samples of municipal secondary wastewater effluent amended with elevated levels of Br-/I- after disinfection by chlorine, chloramines or ozone to identify which disinfection process generated wastewater with the lowest level of adverse biological response. Chlorination increased mammalian cell cytotoxicity by 5 times as compared to non-disinfected controls. Chloramination produced disinfected wastewater that expressed 6.3 times more cytotoxicity than the non-disinfected controls and was 1.3 times more cytotoxic than the chlorinated samples. Ozonation produced wastewater with cytotoxicity comparable to the non-disinfected controls and was at least 4 times less cytotoxic than the chlorine disinfected wastewaters. These results indicate that compared to chlorination and chloramination, ozonation of wastewater with high Br-/I- levels yielded the lowest mammalian cell cytotoxicity, suggesting its potential as a more favorable method to disinfect wastewater with minimizing the biological toxicity in mind.

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Authors+Show Affiliations

Dong S
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Safe Global Water Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. Electronic address: sdong6@illinois.edu.
Nguyen TH
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Safe Global Water Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Plewa MJ
Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Safe Global Water Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

MeSH

AnimalsBromidesChloraminesDisinfectantsDisinfectionHalogenationIodidesOzoneWaste WaterWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28774620

Citation

Dong, Shengkun, et al. "Comparative Mammalian Cell Cytotoxicity of Wastewater With Elevated Bromide and Iodide After Chlorination, Chloramination, or Ozonation." Journal of Environmental Sciences (China), vol. 58, 2017, pp. 296-301.
Dong S, Nguyen TH, Plewa MJ. Comparative mammalian cell cytotoxicity of wastewater with elevated bromide and iodide after chlorination, chloramination, or ozonation. J Environ Sci (China). 2017;58:296-301.
Dong, S., Nguyen, T. H., & Plewa, M. J. (2017). Comparative mammalian cell cytotoxicity of wastewater with elevated bromide and iodide after chlorination, chloramination, or ozonation. Journal of Environmental Sciences (China), 58, 296-301. https://doi.org/10.1016/j.jes.2017.03.030
Dong S, Nguyen TH, Plewa MJ. Comparative Mammalian Cell Cytotoxicity of Wastewater With Elevated Bromide and Iodide After Chlorination, Chloramination, or Ozonation. J Environ Sci (China). 2017;58:296-301. PubMed PMID: 28774620.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparative mammalian cell cytotoxicity of wastewater with elevated bromide and iodide after chlorination, chloramination, or ozonation. AU - Dong,Shengkun, AU - Nguyen,Thanh H, AU - Plewa,Michael J, Y1 - 2017/03/29/ PY - 2017/02/02/received PY - 2017/03/11/revised PY - 2017/03/16/accepted PY - 2017/8/5/entrez PY - 2017/8/5/pubmed PY - 2017/8/12/medline KW - Bromide KW - Chloramination KW - Chlorination KW - Cytotoxicity KW - Disinfection KW - Iodide KW - Ozonation KW - Wastewater SP - 296 EP - 301 JF - Journal of environmental sciences (China) JO - J Environ Sci (China) VL - 58 N2 - Recycling wastewater is becoming more common as communities around the world try to better control their water resources against an increased frequency of either prolonged droughts or intense flooding. For communities in coastal areas, wastewaters may contain elevated levels of bromide (Br-) and iodide (I-) from seawater intrusion or high mineral content of source waters. Disinfection of such wastewater is mandatory to prevent the spread of pathogens, however little is known about the toxicity of wastewater after disinfection in the presence of Br- and I-. In this study we compared the induction of chronic cytotoxicity in mammalian cells in samples of municipal secondary wastewater effluent amended with elevated levels of Br-/I- after disinfection by chlorine, chloramines or ozone to identify which disinfection process generated wastewater with the lowest level of adverse biological response. Chlorination increased mammalian cell cytotoxicity by 5 times as compared to non-disinfected controls. Chloramination produced disinfected wastewater that expressed 6.3 times more cytotoxicity than the non-disinfected controls and was 1.3 times more cytotoxic than the chlorinated samples. Ozonation produced wastewater with cytotoxicity comparable to the non-disinfected controls and was at least 4 times less cytotoxic than the chlorine disinfected wastewaters. These results indicate that compared to chlorination and chloramination, ozonation of wastewater with high Br-/I- levels yielded the lowest mammalian cell cytotoxicity, suggesting its potential as a more favorable method to disinfect wastewater with minimizing the biological toxicity in mind. SN - 1001-0742 UR - https://www.unboundmedicine.com/medline/citation/28774620/Comparative_mammalian_cell_cytotoxicity_of_wastewater_with_elevated_bromide_and_iodide_after_chlorination_chloramination_or_ozonation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1001-0742(17)30337-6 DB - PRIME DP - Unbound Medicine ER -