Occurrence of nitrogenous and carbonaceous disinfection byproducts in drinking water distributed in Shenzhen, China

Huang, Huang; Zhu, He; Gan, Wenhui; Chen, Xue; Yang, Xin

doi:10.1016/j.chemosphere.2017.08.172

Cited by 63 publications

(29 citation statements)

References 21 publications

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“…Chromatographic separation of the DBPs was performed using a DB-5 column (30 m × 0.25 mm i.d., 0.25 μm, Agilent, Santa Clara, CA). The analysis methods were consistent with those of Huang et al. (2017) .…”

Section: Methodsmentioning

confidence: 52%

“…Our calculations showed the total formation potentials of DCAcAm from the three tetracyclines could reach 1.26 μg/L for chlorination and 0.27 μg/L for chloramination. According to previous reports, DCAcAm is formed at several microgram per liter levels after chlorination and chloramination of drinking water ( Bond et al., 2015 ; Huang et al., 2017 ; Kosaka et al., 2016 ). Although our calculations were not very accurate because they did not take into consideration factors such as the effect of tetracycline concentration on DCAcAm formation rate, the dissolved organic matter concentration or disinfection conditions, the results support the importance of tetracyclines as DCAcAm precursors.…”

Section: Resultsmentioning

confidence: 88%

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Tetracycline antibiotics as precursors of dichloroacetamide and other disinfection byproducts during chlorination and chloramination

Shao

Huang

et al. 2021

Chemosphere

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Pollution of natural water and even source water with pharmaceuticals is problematic worldwide and raises concern about the possibility of disinfection byproduct (DBP) formation during subsequent water treatment. In this study, the formation of DBPs, especially dichloroacetamide (DCAcAm), was investigated during chlorination and chloramination of tetracyclines, which are a class of broad-spectrum antibiotics. DBPs including DCAcAm were formed during chlorination and chloramination of tetracycline (TC). Although the concentrations and theoretical cytotoxicity of the DBPs formed from TC were affected by the contact time, disinfectant dose, and pH, DCAcAm was the main contributor determining the yields and cytotoxicity of the measured DBPs. The DCAcAm yields from four tetracycline antibiotics ranged from 0.43% to 54.26% for chlorination. For chloramination, the DCAcAm yields reached 44.57%, and the nitrogen in DCAcAm mainly came from tetracycline antibiotics rather than chloramines. ClO 2 pre-oxidation and UV photolysis decreased DCAcAm formation during chlorination and chloramination of TC. The high yields observed in this study suggest that tetracycline antibiotics are possible precursors of DCAcAm.

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Section: Methodsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 88%

Tetracycline antibiotics as precursors of dichloroacetamide and other disinfection byproducts during chlorination and chloramination

Shao

Huang

et al. 2021

Chemosphere

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“…CF is frequently identified in finished water and represented the major class of halogenated DBPs, , with an average concentration of 16.7 μg/L, which is lower than that of Cyprus (19 μg/L) but higher than that reported from observations in Beijing (6.51 μg/L) . In addition, the average concentrations of BDCM, DBCM, and BF in this study are 13.6, 12.9, and 4.9 μg/L, respectively, which are lower than those of Cyprus (22, 20, and 5 μg/L, respectively) but higher than those in Shenzhen, China (5.3, 1.7, and 0.3 μg/L, respectively) …”

Section: Resultsmentioning

confidence: 99%

Occurrence of CX₃R-Type Disinfection Byproducts in Drinking Water Treatment Plants Using DON-Rich Source Water

et al. 2020

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To understand the occurrence of CX 3 R-type disinfection byproducts (DBPs) in drinking water treatment plants that use dissolved organic nitrogen (DON)-rich water sources, this study surveyed the occurrence of 24 CX 3 R-type DBPs in finished water of seven drinking water treatment plants with source water from Lake Tai, characterized by a high level of DON. The results showed that the concentrations of trihalomethanes (THMs) ranged from 28.7 to 70.6 μg/L and met the Chinese total THM guideline. In addition, the concentrations of HAAs and HALs ranged from 0.7 to 20.5 μg/L and from 4.6 to 13.5 μg/L, respectively. As for nitrogenous DBPs, the concentrations of haloacetonitriles (HANs), halonitromethanes, and haloacetamides were in the ranges of 2.6−6.0, 1.7−4.2, and 5.4−13.3 μg/L, respectively, which are higher than those of other areas in China, probably because of the high levels of DON (0.7 mg/L) and serious eutrophication of the source water. Generally, the occurrence of individual CX 3 R-type DBP species followed the trend Cl-DBPs > Cl−Br-DBPs > Br-DBPs for both carbonaceous DBPs and nitrogenous DBPs. Moreover, the results showed that an advanced treatment process played an important role in promoting the removal of CX 3 R-type DBP precursors, based on the conventional treatment. Importantly, the calculated cytotoxicity results from this study and the literature all proved that the HANs, with dibromoacetonitrile (DBAN) as the dominant species, were rated as the most important species in finished water. Moreover, a predictive model for the concentration of DBAN was established to understand the formation and fate of DBAN. It revealed that DON and Br − were two indispensable factors for the formation of DBAN; in addition, soluble microbial products and aromatic protein substances likely play a significant role in DBAN formation.

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“…also be polluted by pipe deterioration, pipe leakage, and microbial contamination in water distribution system [147]. Moreover, the occurrence of DBPs in the drinking water distribution system also poses great challenges to the safety of end users [148,149]. The mismatch between the increasing concerns on drinking water safety and increasing demand on high-quality drinking water is calling for effective strategies to produce reliable and safe water for end users.…”

Section: Nf For Point Of Use Applicationsmentioning

confidence: 99%

Nanofiltration for drinking water treatment: a review

Guo

Yang

et al. 2021

Front. Chem. Sci. Eng.

100

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In recent decades, nanofiltration (NF) is considered as a promising separation technique to produce drinking water from different types of water source. In this paper, we comprehensively reviewed the progress of NFbased drinking water treatment, through summarizing the development of materials/fabrication and applications of NF membranes in various scenarios including surface water treatment, groundwater treatment, water reuse, brackish water treatment, and point of use applications.We not only summarized the removal of target major pollutants (e.g., hardness, pathogen, and natural organic matter), but also paid attention to the removal of micropollutants of major concern (e.g., disinfection byproducts, per-and polyfluoroalkyl substances, and arsenic). We highlighted that, for different applications, fit-for-purpose design is needed to improve the separation capability for target compounds of NF membranes in addition to their removal of salts. Outlook and perspectives on membrane fouling control, chlorine resistance, integrity, and selectivity are also discussed to provide potential insights for future development of high-efficiency NF membranes for stable and reliable drinking water treatment.

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Occurrence of nitrogenous and carbonaceous disinfection byproducts in drinking water distributed in Shenzhen, China

Cited by 63 publications

References 21 publications

Tetracycline antibiotics as precursors of dichloroacetamide and other disinfection byproducts during chlorination and chloramination

Tetracycline antibiotics as precursors of dichloroacetamide and other disinfection byproducts during chlorination and chloramination

Occurrence of CX₃R-Type Disinfection Byproducts in Drinking Water Treatment Plants Using DON-Rich Source Water

Nanofiltration for drinking water treatment: a review

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Occurrence of nitrogenous and carbonaceous disinfection byproducts in drinking water distributed in Shenzhen, China

Cited by 63 publications

References 21 publications

Tetracycline antibiotics as precursors of dichloroacetamide and other disinfection byproducts during chlorination and chloramination

Tetracycline antibiotics as precursors of dichloroacetamide and other disinfection byproducts during chlorination and chloramination

Occurrence of CX3R-Type Disinfection Byproducts in Drinking Water Treatment Plants Using DON-Rich Source Water

Nanofiltration for drinking water treatment: a review

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Occurrence of CX₃R-Type Disinfection Byproducts in Drinking Water Treatment Plants Using DON-Rich Source Water