Mechanistic modeling of peracetic acid wastewater disinfection using computational fluid dynamics: Integrating solids settling with microbial inactivation kinetics

Elhalwagy, Mahmoud; Biabani, Roya; Bertanza, Giorgio; Wisdom, Blair; Goldman-Torres, J.E.; McQuarrie, Jim; Straatman, Anthony G.; Santoro, Domenico

doi:10.1016/j.watres.2021.117355

Cited by 13 publications

(7 citation statements)

References 22 publications

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“…For this application, the dual sum exponential microbial decay model 37 (eq 1) was considered (in the CT domain). 38 In the CT domain, the dual sum exponential model was found to effectively reduce to the single exponential decay model (Figure 3 The k p or CT dose-dependent inactivation rate constant for particle-associated microbes, based on a β = 0.01, played an insignificant role compared to k d in our secondary effluent PAA disinfection application.…”

Section: Acs Esandt Engineeringmentioning

confidence: 92%

“…coli concentrations were determined at five sampling locations along the side-stream contact tank. For this application, the dual sum exponential microbial decay model (eq ) was considered (in the CT domain) . In the CT domain, the dual sum exponential model was found to effectively reduce to the single exponential decay model (Figure ) with β = 0.01 (considered negligible), m = 1, and k d = 0.54 L/mg·min, (the CT dose-dependent inactivation rate constant for dispersed microbes) …”

Section: Methodsmentioning

confidence: 99%

“… E. coli inactivation due to PAA disinfection with an exponential decay model (in CT domain space) showing a good fit to account for the rapid inactivation and tailing effect. , …”

Section: Methodsmentioning

confidence: 99%

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Side-Stream Comparison of Peracetic Acid and Chlorine as Hypochlorite for Disinfection of Municipal Wastewater Effluent at a Full-Scale Treatment Facility, Ontario, Canada

et al. 2022

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Peracetic acid (PAA) has been used as a municipal wastewater disinfectant for over 2 decades, but information about its virucidal performance is limited. Here, we report on a 2 year study of virus disinfection with PAA and chlorine as hypochlorite (NaClO) in a secondary wastewater treatment plant. During year 1, we conducted a side-stream comparison of PAA dosed at 4 mg/L (minus a demand of about 10%) and NaClO at 7.3 mg/L against indigenous enteroviruses and noroviruses, as well as coliphages and Escherichia coli, while assessing PAA fish toxicity under flow-through conditions. During year 1, PAA and NaClO produced poor median log10 reductions (LRs) against enteroviruses and noroviruses, although NaClO LRs were significantly higher. PAA and NaClO performed better against coliphages, but differences were not significant. Against E. coli, PAA and NaClO performed well. 96 hour toxicity testing was done only during year 1, revealing that PAA residual was lethal to rainbow trout only prior to quenching. The PAA dose was reduced to 3 mg/L (minus a demand of about 10%) during year 2 when we enumerated only coliphages and E. coli. F+ male-specific coliphage LRs significantly dropped from 1.2 to 0.5, while E. coli LR remained unchanged. To ensure protection of aquatic life, an interim 0.27 mg/L PAA residual discharge limit was derived.

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Section: Acs Esandt Engineeringmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

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Side-Stream Comparison of Peracetic Acid and Chlorine as Hypochlorite for Disinfection of Municipal Wastewater Effluent at a Full-Scale Treatment Facility, Ontario, Canada

et al. 2022

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“…Considered an environmentally friendly oxidant and disinfectant with low environmental impact [60,61], peracetic acid stands out as a key alternative to chlorinated compounds [62][63][64][65]. One of its notable advantages is its minimal reactivity with proteins, effectively preventing the formation of biofilms [66].…”

Section: Peracetic Acidmentioning

confidence: 99%

Sanitizers Used for Fungal Spoilage Control in Dry-Fermented Cured Meat Production

Silva,

Bernardi,

Garcia

et al. 2024

Fermentation

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Contamination caused by fungi stands out as a significant microbiological issue in the food industry, particularly leading to premature spoilage across various food segments, including the dry-fermented meat industry. The emergence of undesired fungi on product surfaces results in substantial economic losses. Once microorganisms infiltrate the food, contamination ensues, and their subsequent proliferation can adversely impact the product’s appearance, odor, flavor, and texture. This, in turn, leads to consumer rejection and negatively affects the commercial brand. Additionally, concerns persist regarding the potential presence of mycotoxins in these products. Given the detrimental effects of spoilage fungi in the food industry, practices such as thorough cleaning and sanitization become crucial to prevent contamination and subsequent premature deterioration. These measures play a pivotal role in ensuring the quality and safety of food, while also extending the shelf life of products. This review delves into the advantages, disadvantages, and factors that may influence the efficacy of commonly used sanitizers in the dry-fermented cured meat industry, including substances like sodium hypochlorite, peracetic acid, and benzalkonium chloride.

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“…The performance of these processes and the affecting factors have to be studied in order to develop mathematical models that can predict the removal efficiency in relation to specific contaminants from wastewater. Researchers have modelled the granular activated carbon filtration (Mozaffari Majd et al, 2022), aerobic granular sludge (van Dijk et al, 2020), UV/H2O2 process (Hu et al, 2019;Rubio-Clemente et al, 2017), disinfection (Elhalwagy et al, 2021), membrane bioreactor (Deowan et al, 2019), reverse osmosis (Gaublomme et al, 2020), and ultrafiltration (Yang et al, 2021). Moreover, expanding the boundaries of the systems, the whole plant and the symbiotic relationships have been modeled.…”

Section: Literature Reviewmentioning

confidence: 99%

Modelling Closed-Water Loops in the Process Industries

Karkou,

Savvakis,

Aryblia

et al.

Global NEST International Conference on Environmental Science &Amp; Technology

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Global water scarcity poses a significant challenge for the process industry, especially in water-stressed areas. Population growth and rapid industrialization make evident the necessity to incorporate sustainable and efficient water management strategies in the industrial sector. This study aims to point out the complex industrial systems at different levels presenting the modelling of them. Overall, three modelling levels are identified, i.e., in-process, in-factory, and systemic modelling based on the system’s characteristics, requirements, and prospects. Individual process units, a series of water and wastewater treatment processes, a whole industrial plant and synergistic collaborations are modelled. In this regard, a generic methodology was developed in order to be applied in six discrete use cases, recommending the most appropriate model to be applied.

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Mechanistic modeling of peracetic acid wastewater disinfection using computational fluid dynamics: Integrating solids settling with microbial inactivation kinetics

Cited by 13 publications

References 22 publications

Side-Stream Comparison of Peracetic Acid and Chlorine as Hypochlorite for Disinfection of Municipal Wastewater Effluent at a Full-Scale Treatment Facility, Ontario, Canada

Side-Stream Comparison of Peracetic Acid and Chlorine as Hypochlorite for Disinfection of Municipal Wastewater Effluent at a Full-Scale Treatment Facility, Ontario, Canada

Sanitizers Used for Fungal Spoilage Control in Dry-Fermented Cured Meat Production

Modelling Closed-Water Loops in the Process Industries

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