Disinfection of dairy wastewater effluent through solar photocatalysis processes

Afsharnia, Mojtaba; Kianmehr, Mojtaba; Biglari, Hamed; Dargahi, Abdollah; Karimi, Abdolreza

doi:10.1016/j.wse.2018.10.001

Cited by 47 publications

(13 citation statements)

References 28 publications

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“…Physical and chemical treatment methods comprising membrane‐based methods (e.g., nanofiltration (NF) and reverse osmosis (RO)), gravitational methods (e.g., coagulation and flocculation), and adsorption can be applied as a supplement to biological methods in order to obtain higher removal efficiencies (Andrade et al., 2014; Bazrafshan et al., 2016; Z. Chen et al., 2017, 2018; Falahati et al., 2018; Mateus et al., 2017). In addition to the discussed methods, advanced oxidation processes (AOPs) such as Fenton and electro Fenton, solar photocatalysis, and sono‐assisted oxidation have been recently used for the treatment of high COD wastewaters (Afsharnia et al, 2018; Bruguera‐Casamada et al, 2019; Jaltade et al, 2020; Panahi et al, 2020). Although AOP treatments showed significant efficiency in COD removal from dairy wastewater, they have been limited to remove nitrogen on large scales (Mandal et al, 2017).…”

Section: Secondary Data Reviewmentioning

confidence: 99%

Comprehensive review of water management and wastewater treatment in food processing industries in the framework of water‐food‐environment nexus

Asgharnejad

Nazloo

Larijani

et al. 2021

Comp Rev Food Sci Food Safe

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Food processing is among the greatest water-consuming industries with a significant role in the implementation of sustainable development goals. Waterconsuming industries such as food processing have become a threat to limited freshwater resources, and numerous attempts are being carried out in order to develop and apply novel approaches for water management in these industries. Studies have shown the positive impact of the new methods of process integration (e.g., water pinch, mathematical optimization, etc.) in maximizing water reuse and recycle. Applying these methods in food processing industries not only significantly supported water consumption minimization but also contributed to environmental protection by reducing wastewater generation. The methods can also increase the productivity of these industries and direct them to sustainable production. This interconnection led to a new subcategory in nexus studies known as water-food-environment nexus. The nexus assures sustainable food production with minimum freshwater consumption and minimizes the environmental destructions caused by untreated wastewater discharge. The aim of this study was to provide a thorough review of water-food-environment nexus application in food processing industries and explore the nexus from different aspects.The current study explored the process of food industries in different sectors regarding water consumption and wastewater generation, both qualitatively and quantitatively. The most recent wastewater treatment methods carried out in different food processing sectors were also reviewed. This review provided a comprehensive literature for choosing the optimum scenario of water and wastewater management in food processing industries. K E Y W O R D Scircular economy, food processing, nexus, wastewater treatment, water management INTRODUCTIONIncreased global demand for freshwater due to population growth has put the water resources under stress for the recent decades. Water scarcity is predicted to get more intensive in the forthcoming years (Piesse, 2020). Statistical data demonstrated that annual water consumption in three main different sectors of agriculture, industries, and

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Section: Secondary Data Reviewmentioning

confidence: 99%

Comprehensive review of water management and wastewater treatment in food processing industries in the framework of water‐food‐environment nexus

Asgharnejad

Nazloo

Larijani

et al. 2021

Comp Rev Food Sci Food Safe

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“…As nanopartículas de TiO2 na água são excitadas pela luz UV, gerando •OH em contato com o oxigênio dissolvido. O oxigênio é necessário para um processo eficiente de fotocatálise (Afsharnia et al, 2018).…”

Section: Fotocatálise Heterogênea Tio2/uvunclassified

Processos oxidativos avançados aplicados no tratamento de efluentes da produção de membranas: revisão de literatura

Araújo

Souza

Sarmento

et al. 2021

RSD

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A aplicação de novas tecnologias e pesquisas em tratamento de águas são os caminhos para minimizar os impactos causados ao meio ambiente e melhoria dos recursos hídricos e, consequentemente, econômico e social de uma região. Dentre as tecnologias, se destacam os processos oxidativos avançados (POA’s), os quais são baseados na utilização de espécies altamente oxidantes para promover uma degradação mais eficaz do poluente a ser tratado. Este trabalho tem como objetivo realizar uma revisão dos POA’s, sendo eles: a fotocatálise com dióxido de titânio (TiO2)/ultravioleta (UV), foto-fenton e o peróxido de hidrogênio (H2O2)/UV, identificando os processos mais adequados de acordo com o poluente a ser tratado. Os POA’s se apresentam como uma opção para degradar os poluentes orgânicos que possuem elevada estabilidade química, devido à ineficiência de métodos comuns de tratamento de efluentes de difícil degradação. Além disso, os POA’s surgem como uma tecnologia onde apresenta uma maior eficiência no tratamento de efluentes a um baixo custo operacional. Portanto, os POA’s possuem um grande potencial para serem aplicados no tratamento de diversos efluentes obtidos a partir dos solventes utilizados na produção de membranas.

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“…Several alternative methods have been suggested for disinfecting thermal and therapeutic waters, while others may be considered based on experiences in other fields; these include ultraviolet (UV) light treatment [4,12], ultrafiltration [13], and the use of nanomaterials [14,15]. Advanced oxidation processes (AOP) based on different methods such as the combination of UV/H 2 O 2 /O 3 , nanomaterials, or electrocoagulation are becoming widespread [16][17][18]. However, alternative methods often entail high costs, and the fouling of UV lamps can be significant in waters with a high mineral content.…”

Section: Introductionmentioning

confidence: 99%

Disinfection of Therapeutic Spa Waters: Applicability of Sodium Hypochlorite and Hydrogen Peroxide-Based Disinfectants

Gere

Róka

Záray

et al. 2022

Water

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The microbial water quality of therapeutic pools operating without disinfection is recurrently compromised, posing a risk to bathers’ health. The complex composition of such waters and the sensitivity of their therapeutic components hinder the use of traditional chlorine-based disinfectants. The present study aimed to investigate the applicability of a hydrogen peroxide-based disinfectant in therapeutic water in comparison with hypochlorite. Disinfection efficacy, byproduct formation, and the fate of therapeutic components were tested for both disinfectants under laboratory conditions, applying different doses and contact times. Disinfection efficacy was found to be matrix-dependent, especially that of hydrogen peroxide against Pseudomonas aeruginosa (a 10- to 1000-fold difference). Hypochlorite treatment presented a significant chemical risk through the generation of byproducts, mainly brominated and iodinated compounds and combined chlorine. Of the alleged therapeutic components, sulfide ions were eliminated (≥86% loss) by both disinfectants, and hypochlorite reacted with iodide ions as well (≥70% removal). Based on their composition, only 2% of Hungarian therapeutic waters can be treated by chlorination due to high concentrations of ammonia and/or organic compounds. Hydrogen peroxide is applicable to 82% of the waters, as the presence of sulfide ions is the only limiting factor. Due to the matrix effect, close control of residual disinfectant concentration is necessary to ensure microbial safety.

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Disinfection of dairy wastewater effluent through solar photocatalysis processes

Cited by 47 publications

References 28 publications

Comprehensive review of water management and wastewater treatment in food processing industries in the framework of water‐food‐environment nexus

Comprehensive review of water management and wastewater treatment in food processing industries in the framework of water‐food‐environment nexus

Processos oxidativos avançados aplicados no tratamento de efluentes da produção de membranas: revisão de literatura

Disinfection of Therapeutic Spa Waters: Applicability of Sodium Hypochlorite and Hydrogen Peroxide-Based Disinfectants

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