Formation of DBPs during chlorination of antibiotics and control with permanganate/bisulfite pretreatment

Wang, Hailan; Shi, Weiye; Ma, Defang; Shang, Yi; Wang, Yan; Gao, Baoyu

doi:10.1016/j.cej.2019.123701

Cited by 30 publications

(10 citation statements)

References 47 publications

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“…Generally, DBP formation mainly depends on the chlorine reactivity of the structure of the target organic matter. Furthermore, organics with low molecular weights are more likely to undergo ring opening reactions and hydrolysis to form DBP via halogenation reactions during chlorination [47] . The amide functional group of PCT increased the electron density of the aromatic ring, making it easily attacked by chlorine through electrophilic substitution.…”

Section: Resultsmentioning

confidence: 99%

Comparative study of degradation of ketoprofen and paracetamol by ultrasonic irradiation: Mechanism, toxicity and DBP formation

Gao

Zhou

Rao

et al. 2022

Ultrasonics Sonochemistry

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Highlights Ultrasonically induced degradation of KET and PCT was investigated for comparison. Various factors affecting ultrasonic degradation behavior were evaluated. Degradation pathways in the ultrasonic process were proposed. The toxicity of the reaction solution decreased, as reflected in HUVECs. Ultrasonic treatment enhanced the formation of TCM and TCNM during postchlorination.

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Section: Resultsmentioning

confidence: 99%

Comparative study of degradation of ketoprofen and paracetamol by ultrasonic irradiation: Mechanism, toxicity and DBP formation

Gao

Zhou

Rao

et al. 2022

Ultrasonics Sonochemistry

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“…Normally, hospital wastewaters (HWWs) are treated under special rules. In some cases, the sewage generated from non-infectious patients is combined with municipal wastewater and sent to the WWTP (Wang et al 2020a , b ). However, the practicality of this approach, especially during a pandemic, is questionable.…”

Section: Dbp Formation By Disinfection Of Hospital Surfaces and Wastewatermentioning

confidence: 99%

“…Another consequence of the increase in chlorine concentration in the air is the significant rise in PM 2.5 (particulate matter of size less than 2.5-µm diameter) concentration. Anthropogenic chlorine emissions from burning agricultural wastes, biofuels, municipal waste incineration, and various other industrial sources across China were found to increase the total inorganic PM 2.5 up to 3.2 µg/m 3 per annum (Wang et al 2020a , b ). Another study from China also reported a similar finding with a monthly average increase in PM 2.5 by 7.5 µg/m 3 (9.1%) due to chlorine emissions into the atmosphere (Zhang et al 2021c , a , b ).…”

Section: Environmental Impacts Of Excessive Applications Of Cbd Smentioning

confidence: 99%

Environmental impacts of the widespread use of chlorine-based disinfectants during the COVID-19 pandemic

Parveen

Chowdhury

Goel

2022

Environ Sci Pollut Res

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Chlorinated disinfectants are widely used in hospitals, COVID-19 quarantine facilities, households, institutes, and public areas to combat the spread of the novel coronavirus as they are effective against viruses on various surfaces. Medical facilities have enhanced their routine disinfection of indoors, premises, and in-house sewage. Besides questioning the efficiency of these compounds in combating coronavirus, the impacts of these excessive disinfection efforts have not been discussed anywhere. The impacts of chlorine-based disinfectants on both environment and human health are reviewed in this paper. Chlorine in molecular and in compound forms is known to pose many health hazards. Hypochlorite addition to soil can increase chlorine/chloride concentration, which can be fatal to plant species if exposed. When chlorine compounds reach the sewer/drainage system and are exposed to aqueous media such as wastewater, many disinfection by-products (DBPs) can be formed depending on the concentrations of natural organic matter, inorganics, and anthropogenic pollutants present. Chlorination of hospital wastewater can also produce toxic drug-derived disinfection by-products. Many DBPs are carcinogenic to humans, and some of them are cytotoxic, genotoxic, and mutagenic. DBPs can be harmful to the flora and fauna of the receiving water body and may have adverse effects on microorganisms and plankton present in these ecosystems. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-021-18316-2.

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“…DBPs including THMs [trichloromethane (TCM), bromodichloromethane (BDCM), dibromochloromethane (DBCM) and tribromethane (TBM)], HAAs [dichloroacetic acid (DCAA), monochloroacetic acid (MCAA), and trichloroacetic acid (TCAA)], HANs [trichloroactetonitrile (TCAN), DCAN, bromochloroacetonitrile (BCAN) and dibromoacetonitrile (DBAN)], HKs [1,1,1-trichloropropanone (1,1,1-TCP) and 1,1-dichlro-2-propanone (1,1-DCP)], and trichloronitromethane (TCNM) were analyzed. Detailed determination methods can be found in our previous study (Wang et al, 2020a).…”

Section: Chemical Cleaning Of Fouled Membrane Modulesmentioning

confidence: 99%

Formation of disinfection by-products during sodium hypochlorite cleaning of fouled membranes from membrane bioreactors

Wang

Shi

et al. 2021

Front. Environ. Sci. Eng.

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Formation of DBPs during chlorination of antibiotics and control with permanganate/bisulfite pretreatment

Cited by 30 publications

References 47 publications

Comparative study of degradation of ketoprofen and paracetamol by ultrasonic irradiation: Mechanism, toxicity and DBP formation

Comparative study of degradation of ketoprofen and paracetamol by ultrasonic irradiation: Mechanism, toxicity and DBP formation

Environmental impacts of the widespread use of chlorine-based disinfectants during the COVID-19 pandemic

Formation of disinfection by-products during sodium hypochlorite cleaning of fouled membranes from membrane bioreactors

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