Wastewater surveillance of SARS-CoV-2 and chemical markers in campus dormitories in an evolving COVID − 19 pandemic

Mohapatra, Sanjeeb; Bhatia, Sumedha; Senaratna, Kavindra Yohan Kuhatheva; Jong, M.L. de; Lim, Chun Min Benjamin; Gangesh, G Reuben; Lee, Jia Xiong; Giek, Goh Shin; Cheung, Callie; Yutao, Lin; You, Liangzhi; Yong, Ng How; Peng, Lim Cheh; Wong, Judith Chui Ching; Ching, Ng Lee; Gin, Karina Yew-Hoong

doi:10.1016/j.jhazmat.2022.130690

Cited by 33 publications

(12 citation statements)

References 81 publications

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Section: Introductionmentioning

confidence: 99%

“…During the COVID-19 pandemic, the excessive use of disinfectants in different settings including healthcare, household and public places as well as the intensified disinfection of wastewater result in the increasing environmental loads of disinfectants as emerging contaminants (1)(2)(3)(4)(5). Wastewater surveillance testing had shown a strong positive association between the total concentrations of disinfectants and the SARS-CoV-2 viral load in wastewater (4). After being consumed and used for disinfection, disinfectants would be washed down the drain at household and hospital levels, be released during product manufacturing, or run off into stormwater systems after outdoor application (5).…”

Section: Introductionmentioning

confidence: 99%

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Knowledge, attitudes and practice regarding environmental friendly disinfectants for household use among residents of China in the post-pandemic period

Tong

Zhu

Chen

et al. 2023

Front. Public Health

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BackgroundA sharp rise in household consumption of disinfectants triggered by COVID-19 pandemic has generated tremendous environmental burden and risks of disinfectant emissions in the post-pandemic period. To address this emerging challenge, replacing highly hazardous disinfectants with more environmental friendly alternatives has been accepted as an inherently effective solution to environment issues posed by disinfectant emerging contaminants. However, no study has yet been done to explore the potential customers' attitudes and the market prospect of environmental friendly disinfectants until now.MethodsThis cross-sectional questionnaire-based survey was conducted from January to March, 2022, among resident volunteers in China, to explore the practices, knowledge and attitudes of the public regarding environmental friendly disinfectants for household use.ResultsAmong a total of 1,861 Chinese residents finally included in the analyses, 18% agreed or strongly agreed that they paid special attention to the environmental certification label on the product, and only bought the environmental certified disinfectant products; 16% and 10% were using environmental friendly disinfectants for hand sanitization and environmental disinfection, respectively. The mean self-assessed and actual knowledge scores were 2.42 ± 1.74 and 2.12 ± 1.97, respectively, out of a total of 5. Participants having good practices of consuming environmental friendly disinfectants achieved higher knowledge scores. Residents' overall attitudes toward the development, consumption and application of environmental friendly disinfectants were very positive. “Possible conflict between disinfection effectiveness and environmental factor of disinfectants in a context of severe COVID-19 pandemic” was considered as the most important barrier jeopardizing the participants' usage intention for environmental friendly disinfectants.ConclusionsThese data suggested most residents of China had a positive attitude, poor knowledge and practices toward environmental friendly disinfectants. More should be done to enhance the residents' environmental knowledge levels about disinfectants, and to further develop and promote disinfectant products with both excellent disinfection activity and environmentally friendly attributes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Knowledge, attitudes and practice regarding environmental friendly disinfectants for household use among residents of China in the post-pandemic period

Tong

Zhu

Chen

et al. 2023

Front. Public Health

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“…Apart from QACs, disinfectants can also contain other biocides that are antimicrobials . During the pandemic, a wastewater treatment plant (WWTP) in Greece was reported to have received 152% more biocides as compared to prepandemic time in 2019! Likewise, a high concentration of disinfectants and their positive correlation with COVID-19 cases were observed in residential dormitory wastewater in Singapore . Studies measuring the concentrations of QAC residues in wastewaters in the USA during the pandemic are presently not available.…”

Section: Introductionmentioning

confidence: 99%

“…3 Likewise, a high concentration of disinfectants and their positive correlation with COVID-19 cases were observed in residential dormitory wastewater in Singapore. 4 Studies measuring the concentrations of QAC residues in wastewaters in the USA during the pandemic are presently not available. Given the concern with increased use of disinfectants during the pandemic, several researchers have reviewed the potential implications on wastewater treatment and receiving waters.…”

Section: Introductionmentioning

confidence: 99%

Changes in Prevalence but Not Hosts of Antibiotic Resistance Genes during the COVID-19 Pandemic versus Prepandemic in Wastewater Influent

Deshpande,

Ehasz,

Eramo

et al. 2023

ACS EST Water

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The COVID-19 pandemic offered a unique opportunity to study shifts in environmental antibiotic resistance that could be associated with the changes in disinfectant and/or antibiotic usage patterns, coinfections, or other behaviors. The aim of this study was to document temporal changes (pre-, early-, versus later-pandemic) in antibiotic resistance genes (ARGs), ARG hosts, biomarkers of potential coinfections, and the total microbiome in municipal wastewater influent from one separate sanitary and one combined sewer system. The 16S rRNA gene copy normalized concentration of qacE was higher in early- than prepandemic samples, and sul1 and tet(G) were higher in early- than later-pandemic samples. Metagenomics revealed significant changes in the abundance of the macrolide and sulfonamide ARG classes. COVID-19 cases positively correlated with the disinfectants/antiseptics group of ARGs and negatively correlated with the sulfonamide and aminoglycoside resistance classes. Discussion is provided regarding the correspondence of these observations with antibiotic prescription pattern changes during the study period. Putative waterborne pathogens were identified, which is of potential interest for understanding the prevalence of community coinfections. No changes in host-ARG associations were observed. Overall, the results of this study may help in understanding the impact of the pandemic and/or lack thereof on another public health crisis: antibiotic resistance.

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“…In recent years, antibiotics have received more and more attention and are considered emerging micropollutants due to their relatively stable structure and anti-biodegradability (Bilal et al, 2020;Bungau et al, 2021;Mohapatra et al, 2023a). Although they are present in low concentrations, when antibiotics enter water, they not only induce antibiotic resistance genes, but also combine with other pollutants, producing compound pollutants that are more toxic to aquatic organisms and humans, which may pose a serious threat to human health and environment (Carvalho and Santos., 2016;Felis et al, 2020;Kovalakova et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Effect and degradation pathway of sulfamethoxazole removal in MBR by PVDF/DA modified membrane

Zhang

Sun

et al. 2023

Front. Environ. Sci.

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To reduce the hazard of sulfamethoxazole (SMX) to the water ecology, the removal mechanism of SMX in wastewater was revealed. This study evaluated the PVDF/DA modified membrane in the membrane bioreactor (MBR) toward the removal and degradation of SMX as a recalcitrant micropollutant. A strategy of dopamine for surface modification of polyvinylidene fluoride (PVDF) membrane was proposed, and PVDF/DA membrane was prepared. Subsequently, PVDF/DA was run in the MBR for 60 days, and the reactor could produce good removal ability for SMX after certain acclimation. When the SMX concentration increased from 0.5 to 2 mg/L, liquid chromatography was used for analysis, and the results showed that the average removal rate was above 85%. The removal effect of COD and NH4+-N and the degree of membrane fouling were also evaluated. By measuring the extracellular polymer (EPS) content, the results showed that after 30 days of operation, the protein and polysaccharide contents in the cake layer on the surface of the PVDF membrane were 1.35 times and 1.49 times that of PVDF/DA membrane, respectively, and the PVDF/DA membrane could alleviate membrane fouling, thereby improving the service life of the membrane and reducing its operating cost. Finally, degradation by-products are evaluated to achieve deeper insight into the degradation mechanisms in the MBR process.

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Wastewater surveillance of SARS-CoV-2 and chemical markers in campus dormitories in an evolving COVID − 19 pandemic

Cited by 33 publications

References 81 publications

Knowledge, attitudes and practice regarding environmental friendly disinfectants for household use among residents of China in the post-pandemic period

Knowledge, attitudes and practice regarding environmental friendly disinfectants for household use among residents of China in the post-pandemic period

Changes in Prevalence but Not Hosts of Antibiotic Resistance Genes during the COVID-19 Pandemic versus Prepandemic in Wastewater Influent

Effect and degradation pathway of sulfamethoxazole removal in MBR by PVDF/DA modified membrane

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