Emerging disinfection by-products in water: novel biofiltration techniques

Islam, Nazim Forid; Sarma, Hemen; Prasad, Majeti NarasimhaVara

doi:10.1016/b978-0-08-102977-0.00005-6

Cited by 10 publications

(3 citation statements)

References 69 publications

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“…Finally, it is also extremely important to consider that excessive disinfectants and drug use of such may produce some effects on the environment ( García-Ávila et al, 2020 ; Kuroda et al, 2021 ; Islam et al, 2020 ) that are not still considered or suitably evaluated. For example, in the environment, chlorine can be transformed into substances that can be highly dangerous for aquatic organisms.…”

Section: Resultsmentioning

confidence: 99%

SARS-CoV-2 and other pathogens in municipal wastewater, landfill leachate, and solid waste: A review about virus surveillance, infectivity, and inactivation

Anand

Kumari

et al. 2022

Environmental Research

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This review discusses the techniques available for detecting and inactivating of pathogens in municipal wastewater, landfill leachate, and solid waste. In view of the current COVID-19 pandemic, SARS-CoV-2 is being given special attention, with a thorough examination of all possible transmission pathways linked to the selected waste matrices. Despite the lack of works focused on landfill leachate, a systematic review method, based on cluster analysis, allows to analyze the available papers devoted to sewage sludge and wastewater, allowing to focalize the work on technologies able to detect and treat pathogens. In this work, great attention is also devoted to infectivity and transmission mechanisms of SARS-CoV-2. Moreover, the literature analysis shows that sewage sludge and landfill leachate seem to have a remote chance to act as a virus transmission route (pollution-to-human transmission) due to improper collection and treatment of municipal wastewater and solid waste. However due to the incertitude about virus infectivity, these possibilities cannot be excluded and need further investigation. As a conclusion, this paper shows that additional research is required not only on the coronavirus-specific disinfection, but also the regular surveillance or monitoring of viral loads in sewage sludge, wastewater, and landfill leachate. The disinfection strategies need to be optimized in terms of dosage and potential adverse impacts like antimicrobial resistance, among many other factors. Finally, the presence of SARS-CoV-2 and other pathogenic microorganisms in sewage sludge, wastewater, and landfill leachate can hamper the possibility to ensure safe water and public health in economically marginalized countries and hinder the realization of the United Nations' sustainable development goals (SDGs).

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Section: Resultsmentioning

confidence: 99%

SARS-CoV-2 and other pathogens in municipal wastewater, landfill leachate, and solid waste: A review about virus surveillance, infectivity, and inactivation

Anand

Kumari

et al. 2022

Environmental Research

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“…The current technologies utilized are focused mainly on the removal of DBPs after their formation and less on preventing their formation; however, the latter is the most efficient approach for their reduction. In this sense, wastewater treatment plants tend to remove organic matter in bulk, as well as other water impurities, before disinfection, but more specific treatments aimed at NOM removal before chlorination are not carried out so often [21,25]. Therefore, studies should be intensified, aiming at establishing preventive measures and practices to ensure drinking water quality and mitigate problems along the whole chain of distribution, thus reducing DBP formation and, subsequently, the need for intensive disinfection.…”

Section: Current Status and Emerging Strategies For Minimizing Dbps I...mentioning

confidence: 99%

An Opinion on the Removal of Disinfection Byproducts from Drinking Water

Roque

Gomes

Reva

et al. 2023

Water

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Ensuring drinking water quality is a key factor for public health and it is especially important given the increase in industrialization. Its quality is ensured by a water treatment process that includes a disinfection stage, mainly involving chlorination. However, by applying this disinfection method, unwanted disinfection byproducts (DBPs) are formed. These compounds have, in general, a negative impact on human health. Following this, the development of stricter regulations for drinking water quality standards has been conducted worldwide. Several techniques for the removal of DBPs have already been developed to prevent DBP formation or to reduce DBPs formed during disinfection. Nevertheless, controlling the water distribution systems after drinking water treatment is still important, since DBPs can reoccur along the distribution network. To achieve this, further research should be developed to efficiently monitor and allow the performance of the necessary actions to detect and control these contaminants throughout the water distribution system. Additionally, the most suitable places for sensing along the distribution system must be further assessed.

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“…Nevertheless, these compounds are known to cause environmental pollution and harm to human health due to its toxicity, corrosive, persistence, and carcinogenic properties. These compounds along with other halogenated organic compounds, including MCA, are commonly found as pollutants in drinking water and wastewater (Islam et al, 2020). High concentrations of MCA cause hazard to living organisms including humans (McRae et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Monochloroacetic Acid Biodegradation by Recombinant E. coli BL21 (DE3)/pET-bcfd1 Carrying Haloacid Dehalogenase Gene from Bacillus cereus IndB1

Ratnaningsih

Ade

Putri

et al. 2021

Int. J. Renew. Energy Dev.

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In recent years, attention to microbial dehalogenase has continually increased due to its potential application, both in bioremediation and in the biosynthesis of fine chemicals. Many microbial recombinant strains carrying dehalogenase gene have been developed, particularly to increase the dehalogenase production and its quality. In this study, we aimed to find the optimum condition for the production of active haloacid dehalogenase by E. coli BL21 (DE3) harboring recombinant plasmid pET-bcfd1 that carried haloacid dehalogenase gene from Bacillus cereus IndB1 local strain. This would be examined by assessing the ability of whole cell life culture to degrade monochloroacetic acid (MCA) and quantifying the chloride ion released into the medium. Several variables were evaluated to find this optimal condition. We found that the best condition for MCA biodegradation using this recombinant clone was at 0.2 mM MCA, 10 μM of isopropyl β-D-1-thiogalactopyranoside (IPTG), 6 hours of pre-induction incubation at 37ºC with shaking, 2 hours IPTG induction at 30ºC with shaking, at pH 7 in Luria Bertani (LB) liquid medium without NaCl, which produced about 0.056 mM chloride ions. Inducer concentration, pre-induction incubation time and temperature, as well as induction time and temperature were apparent to be associated with the expression of the protein, while the MCA concentration and the pH of the medium influenced the ability of the recombinant E. coli BL21 (DE3)/pET-bcfd1 to grow in toxic environment. Our findings laid the foundation for exploration of dehalogenases from local Bacillus strains through genetic engineering for MCA biodegradation

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Emerging disinfection by-products in water: novel biofiltration techniques

Cited by 10 publications

References 69 publications

SARS-CoV-2 and other pathogens in municipal wastewater, landfill leachate, and solid waste: A review about virus surveillance, infectivity, and inactivation

SARS-CoV-2 and other pathogens in municipal wastewater, landfill leachate, and solid waste: A review about virus surveillance, infectivity, and inactivation

An Opinion on the Removal of Disinfection Byproducts from Drinking Water

Optimization of Monochloroacetic Acid Biodegradation by Recombinant E. coli BL21 (DE3)/pET-bcfd1 Carrying Haloacid Dehalogenase Gene from Bacillus cereus IndB1

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