Assessing the removal of organic micropollutants from wastewater by discharging drinking water sludge to sewers

Kulandaivelu, Jagadeeshkumar; Choi, Phil M.; Shrestha, Sohan; Li, Xuan; Song, Yarong; Sharma, Keshab; Yuan, Zhiguo; Mueller, Jochen F.; Wang, Chengduan; Jiang, Guangming

doi:10.1016/j.watres.2020.115945

Cited by 22 publications

(3 citation statements)

References 52 publications

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“…The performance of metformin as an indicator to characterize ∑Phs is further assessed by data from 15 countries, where only 69 influent samples are available (Figure A). ,,,,,,,− A significant correlation of metformin with ∑Phs is observed for the pooled data of Germany and Switzerland together (ρ = 0.85, p < 0.0001, n = 19), and the correlation is also significant for the pooled data from the other 13 countries (ρ = 0.61, p < 0.0001, n = 50). The data from Germany and Switzerland cannot be analyzed together with the other 13 countries because of their discrepancies in ∑Phs.…”

Section: Metformin As An Indicator Of Human Pharmaceutical Contaminationmentioning

confidence: 99%

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Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Zhang

2022

Environ. Sci. Technol.

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Metformin is the first-line antidiabetic drug and one of the most prescribed medications worldwide. Because of its ubiquitous occurrence in global waters and demonstrated ecotoxicity, metformin, as with other pharmaceuticals, has become a concerning emerging contaminant. Metformin is subject to transformation, producing numerous problematic transformation byproducts (TPs). The occurrence, removal, and toxicity of metformin have been continually reviewed; yet, a comprehensive analysis of its transformation pathways, byproduct generation, and the associated change in adverse effects is lacking. In this review, we provide a critical overview of the transformation fate of metformin during water treatments and natural processes and compile the 32 organic TPs generated from biotic and abiotic pathways. These TPs occur in aquatic systems worldwide along with metformin. Enhanced toxicity of several TPs compared to metformin has been demonstrated through organism tests and necessitates the development of complete mineralization techniques for metformin and more attention on TP monitoring. We also assess the potential of metformin to indicate overall contamination of pharmaceuticals in aquatic environments, and compared to the previously acknowledged ones, metformin is found to be a more robust or comparable indicator of such overall pharmaceutical contamination. In addition, we provide insightful avenues for future research on metformin.

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Section: Metformin As An Indicator Of Human Pharmaceutical Contaminationmentioning

confidence: 99%

“…(D) Regional variations in the correlations of metformin with ∑Phs in the surface water of nine countries or regions. The data are adapted from published papers. ,,,,,,,,,,,− ,,,− …”

Section: Metformin As An Indicator Of Human Pharmaceutical Contaminationmentioning

confidence: 99%

Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Zhang

2022

Environ. Sci. Technol.

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“…On the one hand, aluminium has been indicated to improve the adsorption capacity of WTS (e.g., Lee et al [58]). On the other hand, other studies have concluded that aluminium as a coagulant [64,65] in WTS has only a minimal impact on the removal efficacy of steroid compounds [66]. Therefore, it is of utmost importance that further research is conducted to assess the role of aluminium on the adsorption capacity of WTSs containing AC for these hormones.…”

Section: Removal Of Emerging Pollutants From Watermentioning

confidence: 99%

Study of the Potential of Water Treatment Sludges in the Removal of Emerging Pollutants

Dias¹,

Sousa²,

Bernardo

et al. 2021

Molecules

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Presently, water quantity and quality problems persist both in developed and developing countries, and concerns have been raised about the presence of emerging pollutants (EPs) in water. The circular economy provides ways of achieving sustainable resource management that can be implemented in the water sector, such as the reuse of drinking water treatment sludges (WTSs). This study evaluated the potential of WTS containing a high concentration of activated carbon for the removal of two EPs: the steroid hormones 17β-estradiol (E2) and 17α-ethinylestradiol (EE2). To this end, WTSs from two Portuguese water treatment plants (WTPs) were characterised and tested for their hormone adsorbance potential. Both WTSs showed a promising adsorption potential for the two hormones studied due to their textural and chemical properties. For WTS1, the final concentration for both hormones was lower than the limit of quantification (LOQ). As for WTS2, the results for E2 removal were similar to WTS1, although for EE2, the removal efficiency was lower (around 50%). The overall results indicate that this method may lead to new ways of using this erstwhile residue as a possible adsorbent material for the removal of several EPs present in wastewaters or other matrixes, and as such contributing to the achievement of Sustainable Development Goals (SDG) targets.

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Fate and Transport of Microconstituents in Wastewater Treatment Plants

Yang

Huang

Chen

et al. 2023

Microconstituents in the Environment

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Assessing the removal of organic micropollutants from wastewater by discharging drinking water sludge to sewers

Cited by 22 publications

References 52 publications

Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Study of the Potential of Water Treatment Sludges in the Removal of Emerging Pollutants

Fate and Transport of Microconstituents in Wastewater Treatment Plants

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