Direct and indirect effects of SARS-CoV-2 on wastewater treatment

Teymoorian, Termeh; Teymourian, Targol; Kowsari, Elaheh; Ramakrishna, Seeram

doi:10.1016/j.jwpe.2021.102193

Cited by 49 publications

(49 citation statements)

References 164 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This application stands out as a relevant contributor for conventional treatment, since the first treatment phase, whose physical processes aim to reduce the solids already are responsible for the first viral removal; however, being unable to completely remove the viral load. In addition, the secondary treatment besides presents good removal rates using membrane bioreactor, i.e, it was reported with high energy demanding by previous studies - around 0.45 and 0.65 kWh⋅m 3 in higher efficiency ( Teymoorian et al, 2021 ).…”

Section: Resultsmentioning

confidence: 98%

New low-cost biofilters for SARS-CoV-2 using Hymenachne grumosa as a precursor

Demarco

Afonso

Schoeler

et al. 2022

Journal of Cleaner Production

View full text Add to dashboard Cite

The ongoing global spread of COVID-19 (SARS-CoV-2 2019 disease) is causing an unprecedented repercussion on human health and the economy. Despite the primary mode of transmission being through air droplets and contact, the transmission via wastewater is a critical concern. There is a lack of techniques able to provide complete disinfection, along with the uncertainty related to the behavior of SARS-CoV-2 in the natural environment and risks of contamination. This fact makes urgent the research towards new alternatives for virus removal from water and wastewater. Thus, this research aimed to characterize new lost-cost adsorbents for SARS-CoV-2 using Hymenachne grumosa as a precursor and verify its potential for removing SARS-CoV-2 from the solution. The aquatic macrophyte H. grumosa had in natura and activated carbon produced with H. grumosa and zinc chloride (ZnCl 2, 1:1) impregnation and carbonization (700 °C, 1 h) were incubated for 24 h with inactivated SARS-CoV-2 viral suspension, and then the ribonucleic acid (RNA) was extracted and viral load quantified through reverse transcription-quantitative polymerase chain reaction (RT-qPCR) technique. The results demonstrated the great adsorption potential, achieving removal of 98.44% by H. grumosa “in natura” , and 99.61% by H. grumosa with carbon activation, being similar to commercial activated carbon (99.67%). Thus, this study highlights the possibility of low-cost biofilters to be used for SARS-CoV-2 removal, as an excellent alternative for wastewater treatment or watercourses decontamination.

show abstract

Section: Resultsmentioning

confidence: 98%

New low-cost biofilters for SARS-CoV-2 using Hymenachne grumosa as a precursor

Demarco

Afonso

Schoeler

et al. 2022

Journal of Cleaner Production

View full text Add to dashboard Cite

show abstract

“…Chlorine mostly reacts with intracellular components and inactivates viral capsids by damaging them and destroying virus nucleic acids (Kong et al 2021 ). Chlorine elements, chloramines, sodium hypochlorite, chlorine dioxide, calcium hypochlorite, and chloroisocyanurates are the main sources of chlorine (Teymoorian et al 2021 ). Chlorine reacts with water to produce chloride ions and hypochlorous acid, which can be ionized further to produce hypochlorite (Kong et al 2021 ).…”

Section: Disinfection Methods Against the Virus In Wastewatermentioning

confidence: 99%

“…Hypochlorous acid has chlorine disinfectant properties, and hypochlorite is a powerful oxidizer that effectively oxidizes organic contaminants (Kuzniewski 2021 ). The most efficient way to inactivate viruses is to use chlorine as a hypochlorite ion or hypochlorous acid (Teymoorian et al 2021 ). However, hypochlorous acid is usually considered the main disinfectant (Kong et al 2021 ).…”

Section: Disinfection Methods Against the Virus In Wastewatermentioning

confidence: 99%

“…In another study, the presence of coronavirus RNA in wastewater after secondary and tertiary treatment was investigated. They discovered that after the standard activated sludge process, about 11% of the samples were positive for corona RNA, but after the third treatment with sodium hypochlorite disinfection, 100% of the samples were negative, which could be combined in several cases by ultraviolet radiation (Teymoorian et al 2021 ). In a study that looked at the inactivation of the SARS-CoV-2 virus, physical and chemical disinfection technologies were compared under different conditions.…”

Section: Disinfection Methods Against the Virus In Wastewatermentioning

confidence: 99%

“…Ozone is a powerful oxidizer and an effective microbicide against protozoans, bacteria, and viruses (Teymoorian et al 2021 ). It works by reacting with the cytoplasmic membrane and breaking lipid bonds at various bond sites to inactivate microorganisms (Singh et al 2021 ).…”

Section: Disinfection Methods Against the Virus In Wastewatermentioning

confidence: 99%

See 2 more Smart Citations

A Review on the Potential of Common Disinfection Processes for the Removal of Virus from Wastewater

Milani

Bidhendi

2022

Int J Environ Res

View full text Add to dashboard Cite

Due to the prevalence of the COVID-19 outbreak, as well as findings of SARS-CoV-2 RNA in wastewater and the possibility of viral transmission through wastewater, disinfection is required. As a consequence, based on prior investigations, this work initially employed the viral concentration detection technique, followed by the RT-qPCR assay, as the foundation for identifying the SARS-CoV-2 virus in wastewater. After that, the ability and efficacy of chlorine, ozone, and UV disinfection to inactivate the SARS-CoV-2 virus from wastewater were examined. Chlorine disinfection is the most extensively used disinfection technology due to its multiple advantages. With a chlorine dioxide disinfectant dose of 40 mg/L, the SARS-CoV virus is inactivated after 30 min of contact time. On the other hand, ozone is a powerful oxidizer and an effective microbicide that is employed as a disinfectant due to its positive characteristics. After 30 min of exposure to 1000 ppmv ozone, corona pseudoviruses are reduced by 99%. Another common method of disinfection is using ultraviolet radiation, which is usually 253.7 nm suitable for ultraviolet disinfection. At a dose of 1048 mJ/cm 2 , UVC radiation completely inactivates the SARS-CoV-2 virus. Finally, to evaluate disinfection performance and optimize disinfection strategies to prevent the spread of SARS-CoV-2, this study attempted to investigate the ability to remove and compare the effectiveness of each disinfectant to inactive the SARS-CoV-2 virus from wastewater, summarize studies, and provide future solutions due to the limited availability of integrated resources in this field and the spread of the SARS-CoV-2 virus worldwide.

show abstract

Wastewater treatment risks and challenges for public health and the environment during the Covid‐19 pandemic: a review

Kokkinos

Venieri

Mantzavinos

2023

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

During the coronavirus disease 2019 (COVID‐19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), viral transport, fate, disinfection and environmental release in wastewater treatment plants have been issues of high importance for overall management. Although a huge number of scientific publications related to coronaviruses have been published, the number of studies on different aspects of wastewater treatment strategies to deal with SARS‐CoV‐2 abatement is still relatively limited and results are often confusing. To define real wastewater risks for public health and the environment, we have performed a systematic review and identified 96 papers from the PubMed database. We focused on SARS‐CoV‐2 wastewater treatments and how the type and level of treatments affect the virological quality of the effluents, the role of disinfectants, the treatment of medical wastewater, the role of new technologies, as well as the wastewater treatment in low‐ and middle‐income countries. It was concluded that, in general, well‐designed and well‐functioning wastewater treatment plants (WWTPs) and on‐site reliable sanitation systems may significantly limit the risk of SARS‐CoV‐2. The development of cost‐effective decentralized water and wastewater treatment facilities for low‐ and middle‐income countries for the abatement of coronaviruses should be enhanced. Lessons learned during the COVID‐19 pandemic with regard to wastewater treatment are expected to support an improved detection, response and containment of future viral disease outbreaks. © 2023 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

show abstract

Direct and indirect effects of SARS-CoV-2 on wastewater treatment

Cited by 49 publications

References 164 publications

New low-cost biofilters for SARS-CoV-2 using Hymenachne grumosa as a precursor

New low-cost biofilters for SARS-CoV-2 using Hymenachne grumosa as a precursor

A Review on the Potential of Common Disinfection Processes for the Removal of Virus from Wastewater

Wastewater treatment risks and challenges for public health and the environment during the Covid‐19 pandemic: a review

Contact Info

Product

Resources

About