Disinfection by-products in drinking water: Occurrence, toxicity and abatement
Abstract
Disinfection means the killing of pathogenic organisms (e.g. bacteria and its spores, viruses, protozoa and their cysts, worms, and larvae) present in water to make it potable for other domestic works. The substances used in the disinfection of water are known as disinfectants. At municipal level, chlorine (Cl2), chloramines (NH2Cl, NHCl2), chlorine dioxide (ClO2), ozone (O3) and ultraviolet (UV) radiations, are the most commonly used disinfectants. Chlorination, because of its removal efficiency and cost effectiveness, has been widely used as method of disinfection of water. But, disinfection process may add several kinds of disinfection by-products (DBPs) (∼600-700 in numbers) in the treated water such as Trihalomethanes (THM), Haloacetic acids (HAA) etc. which are detrimental to the human beings in terms of cytotoxicity, mutagenicity, teratogenicity and carcinogenicity. In water, THMs and HAAs were observed in the range from 0.138 to 458 μg/L and 0.16-136 μg/L, respectively. Thus, several regulations have been specified by world authorities like WHO, USEPA and Bureau of Indian Standard to protect human health. Some techniques have also been developed to remove the DBPs as well as their precursors from the water. The popular techniques of DBPs removals are adsorption, advance oxidation process, coagulation, membrane based filtration, combined approaches etc. The efficiency of adsorption technique was found up to 90% for DBP removal from the water.
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Chlorination byproducts including organohaloacetic acids and trihalomethanes and chlorite are subject to strict EPA regulation due to potential adverse health effects.
“Importantly, chlorination byproducts (CBPs) including organohaloacetic acids and trihalomethanes (formed due to the presence of dissolved organic matter) and chlorite are subject to strict EPA regulation due to potential adverse health effects (122, 123).”
From Hypochlorous Acid: From Innate Immune Factor and Environmental Toxicant to Chemopreventive Agent Targeting Solar UV-Induced Skin Cancer (2022) · cites this paper as [122]
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- Authors
- Srivastav, A. L., Patel, N., & Chaudhary, V. K.
- Affiliations
- Chitkara University, Himachal Pradesh (IN)
- Dr. Ram Manohar Lohia Avadh University (IN)
- Corresponding author
- Srivastav, Arun Lal
- Venue
- Environmental Pollution
- Publisher
- Elsevier BV
- Published
- 2020-12
- Volume
- 267
- Pages
- 115474
- ISSN
- 0269-7491 (ISSN-L)
- OpenAlex
- W3080544074
- Semantic Scholar
- c585ce57819413c92a3bca9c7ff705292f17d440
- Cited by
- 342
- References
- 6
- Citations by year
- 2026: 39 · 2025: 90 · 2024: 61 · 2023: 77 · 2022: 48 · 2021: 25 · 2020: 1 · 2014: 1
- FWCI
- 3.26
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environmental Pollution (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
- Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
- Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
- Keywords
- disinfection by-products, drinking water, chlorination, trihalomethanes, haloacetic acids, disinfectants, DBP toxicity, carcinogenicity, adsorption, advanced oxidation processes, coagulation, membrane filtration, DBP precursors
- MeSH terms
- Chlorine, Disinfectants, Disinfection, Water Pollutants, Chemical, Water Purification, Trihalomethanes, Halogenation, Drinking Water
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