Modeling Inactivation of Highly Persistent Pathogens in Household-Scale Semi-Continuous Anaerobic Digesters

ManserNathan, D; CunninghamJeffrey, A; ErgasSarina, J; MihelcicJames, R

doi:10.1089/ees.2016.0131

Cited by 5 publications

(4 citation statements)

References 29 publications

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“…The above-mentioned systems (fixed dome digester, floating drum digester, tubular/plug flow digester, septic tanks, biogas latrines, and DEWATS) can transform organic wastes into biogas which is mostly used for cooking while improving waste management practices. However, even though pathogens levels in the effluent are frequently lower than in the influent, AD systems installed in LICs and LMICs are not always designed for the pathogen load they receive, especially when AD is operated at temperatures at or below the mesophilic range or at short retention times, resulting in an effluent that is not safe to manage. ,− For example, analysis of the effluent of different DEWATS configurations in Java (Indonesia) indicated high levels of fecal coliforms that posed public health risks . A study in Ethiopia found that the levels of E. coli , coliforms, and Enterococci in the effluent of four floating drums were above the levels that the EPA considers safe for disposal .…”

Section: Anaerobic Digestion As a Sanitation Technology For Decentral...mentioning

confidence: 99%

Anaerobic Digestion as a Core Technology in Addressing the Global Sanitation Crisis: Challenges and Opportunities

Almansa,

Starostka,

Raskin

et al. 2023

Environ. Sci. Technol.

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Successfully addressing the complex global sanitation problem is a massive undertaking. Anaerobic digestion (AD), coupled with post-treatment, has been identified as a promising technology to contribute to meeting this goal. It offers multiple benefits to the end users, such as the potential inactivation of pathogenic microorganisms in waste and the recovery of resources, including renewable energy and nutrients. This feature article provides an overview of the most frequently applied AD systems for decentralized communities and low-and lower-middleincome countries with an emphasis on sanitation, including technologies for which pathogen inactivation was considered during the design. Challenges to AD use are then identified, such as experience, economics, knowledge/training of personnel and users, and stakeholder analysis. Finally, accelerators for AD implementation are noted, such as the inclusion of field studies in academic journals, analysis of emerging contaminants, the use of sanitation toolboxes and life cycle assessment in design, incorporation of artificial intelligence in monitoring, and expansion of undergraduate and graduate curricula focused on Water, Sanitation, and Hygiene (WASH).

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Section: Anaerobic Digestion As a Sanitation Technology For Decentral...mentioning

confidence: 99%

Anaerobic Digestion as a Core Technology in Addressing the Global Sanitation Crisis: Challenges and Opportunities

Almansa,

Starostka,

Raskin

et al. 2023

Environ. Sci. Technol.

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show abstract

“…It just means the destruction occurs at a lower than expected efficiency and thus contact time becomes more important. Modeling can be employed to estimate rates of Ascaris inactivation for example (e.g., Fidjeland, et al, 2015;Manser et al, 2016).…”

Section: Temperaturementioning

confidence: 99%

Composting and Dry Desiccating Toilets (Latrines)

Naughton¹,

Orner²,

Stenström³

et al. 2019

Water and Sanitation for the 21st Century: Health and Microbiological Aspects of Excreta and Wastewater Management (Global Wate

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“…They reported a 1.56 (± 0.24) log 10 reduction for G. lamblia and 0.55 (± 0.01) log 10 reduction for C. parvum over a 24-day period at a temperature of 21°C and volatile fatty acid concentration of approximately 300 mg COD/L. Manser et al (2016) developed a mathematical model to estimate the inactivation of Ascaris suum ova in householdscale digesters that are fed on a semi-continuous basis. That work demonstrated two things.…”

Section: Small Scale Anaerobic Digestersmentioning

confidence: 99%