A comparison of photolytic, photochemical and photocatalytic processes for disinfection of recirculation aquaculture systems (RAS) streams

Moreno-Andrés, Javier; Rueda-Márquez, Juan José; Homola, Tomáš; Vielma, Jouni; Moriñigo, Miguel A.; Mikola, Anna; Acevedo-Merino, Asunción; Nebot, Enrique; Levchuk, Irina

doi:10.1016/j.watres.2020.115928

Cited by 29 publications

(11 citation statements)

References 70 publications

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“…It is important to remark that although our SLR just found the previously discussed research, others exist. For example, Moreno-Andrés et al [42] applied UVC LEDs combined with chemicals or photocatalytic thin films to prevent bacteria proliferation in recirculation aquaculture systems. These researchers found synergistic results among the combination, and when they coupled thin films and UVC-LEDs, they achieved a 2-log reduction in common bacteria samples from these systems [42].…”

Section: Animal Healthmentioning

confidence: 99%

A Comprehensive Analysis of the UVC LEDs’ Applications and Decontamination Capability

et al. 2022

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The application of light-emitting diodes (LEDs) has been gaining popularity over the last decades. LEDs have advantages compared to traditional light sources in terms of lifecycle, robustness, compactness, flexibility, and the absence of non-hazardous material. Combining these advantages with the possibility of emitting Ultraviolet C (UVC) makes LEDs serious candidates for light sources in decontamination systems. Nevertheless, it is unclear if they present better decontamination effectiveness than traditional mercury vapor lamps. Hence, this research uses a systematic literature review (SLR) to enlighten three aspects: (1) UVC LEDs’ application according to the field, (2) UVC LEDs’ application in terms of different biological indicators, and (3) the decontamination effectiveness of UVC LEDs in comparison to conventional lamps. UVC LEDs have spread across multiple areas, ranging from health applications to wastewater or food decontamination. The UVC LEDs’ decontamination effectiveness is as good as mercury vapor lamps. In some cases, LEDs even provide better results than conventional mercury vapor lamps. However, the increase in the targets’ complexity (e.g., multilayers or thicker individual layers) may reduce the UVC decontamination efficacy. Therefore, UVC LEDs still require considerable optimization. These findings are stimulating for developing industrial or final users’ applications.

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Section: Animal Healthmentioning

confidence: 99%

A Comprehensive Analysis of the UVC LEDs’ Applications and Decontamination Capability

et al. 2022

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“…Moreover, photochemical and photocatalytic disinfection have been extensively studied in recent years. UV irradiation induces the formation of hydroxyl, chlorine, and sulfate radicals during photochemical disinfection in the presence of hydrogen peroxide (H 2 O 2 ), chlorine, persulfate, and other chemicals (Moreno‐Andrés et al, 2020; Zhang et al, 2019). Formisano et al (2016) reported that sunlight/H 2 O 2 and sunlight/PAA disinfection are effective to reduce E. coli in the wastewater to 3.52‐log of E. coli and 3.13‐log of E. coli , respectively in 120 min.…”

Section: Laboratory Scale and Pre‐commercialized Water Treatment Solu...mentioning

confidence: 99%

An assessment of technological development and applications of decentralized water reuse: A critical review and conceptual framework

et al. 2022

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Rapid development, urbanization, and population growth have contributed to water stress in many parts of the world. As freshwater sources are finite, it is essential to source for alternatives to ensure water security. Reclamation of non‐conventional water sources (i.e., rainwater and greywater) can be a viable alternative to alleviate water stress. In this work, various laboratory, pre‐commercialization scale, and commercialized products for rainwater harvesting and greywater treatment and reuse were reviewed. As a result, a conceptual framework is proposed to provide an overview on the applicability of technologies under various settings, which were mapped against the intended use of treated water and the potential for water supply expansion. This conceptual framework could aid decision makers in deciding on a suitable decentralized solution for water reclamation depending on limiting criteria. Decentralized systems of rainwater harvesting and greywater treatment for reuse are going to be crucial in reducing the dependence on the centralized water supply. This article is categorized under: Engineering Water > Planning Water Water and Life > Conservation, Management, and Awareness Science of Water > Water Quality

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“…The most widely used photocatalyst is TiO 2 . In order to allow it to absorb visible light, a large number of modification studies have been carried out, including ion doping, noble metal deposition, dye sensitization, and coupling with other substances. − Simultaneously, many researchers are dedicated to the development of non-TiO 2 photocatalysts, including complex metal oxides, sulfides, nitrides, and nitrogen oxides. − PC has recently emerged as a “green” water disinfection technology with several advantages. ,− One of the advantages is that it can directly use sunlight to achieve various chemical reactions, which can show a more excellent bacterial inactivation effect than sunlight disinfection . In addition, UV-driven PCs show better disinfection performance than UV alone .…”

Section: Advances In Water Disinfection Technologies In Removing Arb ...mentioning

confidence: 99%

Traditional and Emerging Water Disinfection Technologies Challenging the Control of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes

Cai

Sun

et al. 2021

ACS EST Eng.

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The emergence of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) in the environment has created obstacles when treating infectious diseases with antibiotics. Wastewater treatment plants (WWTPs) serve as reservoirs for ARB and ARGs and can disseminate them into the environment. It is important to understand and address these risks. Generally, professional disinfection processes have been used in WWTPs to disinfect the target water body, with the goal of eliminating pathogenic microorganisms in the water. However, ARGs are not generally considered, and antibiotic resistance has spread and developed through horizontal gene transfer (HGT). This Review provides a detailed overview of the application progress of different traditional and new disinfection technologies in removing ARB and ARGs, mainly focusing on the bacterial inactivation mechanisms of chlorination, ozonation, ultraviolet (UV) (including UVA, UVB, and UVC), sunlight, sunlight-dissolved organic matter (DOM), and photocatalysis (PC)/photoelectrocatalysis (PEC). In addition, this Review also focuses on the disinfection technology involved in the transfer of ARGs and clarifies the underlying transfer mechanisms in water environments. Furthermore, by linking the mechanisms of bacterial inactivation, the Review describes how SOS response and cell membrane permeability may be the key step in the conjugation, transformation, and transduction of ARGs. Finally, given the applications and current problems associated with traditional water disinfection technologies and light-based disinfection technologies in removing and controlling ARB and ARGs, this Review describes the current challenges and opportunities to facilitate the development of future disinfection technologies. The Review also highlights future research directions related to ARG transmission control.

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A comparison of photolytic, photochemical and photocatalytic processes for disinfection of recirculation aquaculture systems (RAS) streams

Cited by 29 publications

References 70 publications

A Comprehensive Analysis of the UVC LEDs’ Applications and Decontamination Capability

A Comprehensive Analysis of the UVC LEDs’ Applications and Decontamination Capability

An assessment of technological development and applications of decentralized water reuse: A critical review and conceptual framework

Traditional and Emerging Water Disinfection Technologies Challenging the Control of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes

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