Application of high intensity UVC-LED for the removal of acetamiprid with the photo-Fenton process

Carra, Irene; Pérez, J.A. Sánchez; Malato, Sixto; Autin, Olivier; Jefferson, Bruce; Jarvis, Peter

doi:10.1016/j.cej.2014.11.142

Cited by 68 publications

(24 citation statements)

References 36 publications

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“…Choice of the perfect light source for the photo Fenton reaction is a critical aspect considering its economic viability. The optimum light radiation required for the photo Fenton process is in the UV region and near-visible spectrum up to 560 nm wavelength ( Carra et al, 2015 ). Solar light is a sustainable source of energy, and in areas where the availability of sunshine is limited, artificial light sources are required.…”

Section: Parameter Optimisationmentioning

confidence: 99%

Heterogeneous Fenton catalysts: A review of recent advances

Thomas

Dionysiou

Pillai

2021

Journal of Hazardous Materials

528

162

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Heterogeneous Fenton catalysts are emerging as excellent systems for applications related to water purification. In this review, recent trends in the synthesis and application of heterogeneous Fenton catalysts for the abatement of organic pollutants and disinfection of microorganisms are discussed. It is noted that as the complexity of cell wall increases, the resistance level towards various disinfectants increases and it requires either harsh conditions or longer exposure time for the complete disinfection. In case of viruses, enveloped viruses ( e.g. SARS-CoV-2) are found to be more susceptible to disinfectants than the non-enveloped viruses. The introduction of plasmonic systems with the Fenton catalysts broaden the visible light absorption efficiency of the hybrid material, and incorporation of semiconductor material improves the rate of regeneration of Fe(II) from Fe(III). A special emphasis is given to the use of Fenton catalysts for antibacterial applications. Composite materials of magnetite and ferrites remain a champion in this area because of their easy separation and reuse, owing to their magnetic properties. Iron minerals supported on clay materials, perovskites, carbon materials, zeolites and metal-organic frameworks (MOFs) dramatically increase the catalytic degradation rate of contaminants by providing high surface area, good mechanical stability, and improved electron transfer. Moreover, insights to the zero-valent iron and its capacity to remove a wide range of organic pollutants, heavy metals and bacterial contamination are also discussed. Real world applications and the role of natural organic matter are summarised. Parameter optimisation (e.g. light source, dosage of catalyst, concentration of H 2 O 2 etc. ), sustainable models for the reusability or recyclability of the catalyst and the theoretical understanding and mechanistic aspects of the photo-Fenton process are also explained. Additionally, this review summarises the opportunities and future directions of research in the heterogeneous Fenton catalysis.

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Section: Parameter Optimisationmentioning

confidence: 99%

Heterogeneous Fenton catalysts: A review of recent advances

Thomas

Dionysiou

Pillai

2021

Journal of Hazardous Materials

528

162

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“…High‐intensity UV‐LED system effectively degraded acetamiprid pesticide after 20 min at natural pH with sequential addition of 1 + 1 + 1 mg Fe/L (iron dosage) and 12 mg H 2 O 2 /L. It was hypothesized that both H 2 O 2 and Fe have equal contribution to the formation of ROS radicals in the UV‐LED system (Carra et al., 2015). Further applications of AOPs in the treatment of wastewater from food processing industries such as olive mill, winery, meat, poultry, and dairy have been extensively reviewed elsewhere (Amor, Marchão, Lucas, & Peres, 2019; Krzemińska, Neczaj, & Borowski, 2015).…”

Section: Uv‐leds and Aopsmentioning

confidence: 99%

Recent advances on the application of UV‐LED technology for microbial inactivation: Progress and mechanism

Kebbi

Muhammad

Sant’Ana

et al. 2020

Comp Rev Food Sci Food Safe

100

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Conventional technologies for the inactivation of microorganisms in food products have their limitations, especially changes in quality attributes that have led to quality deterioration, low consumer acceptance, impact on the environment, and potential health hazards (carcinogens). Ultraviolet (UV) light is an emerging promising nonthermal technology employed for microbial inactivation in water, liquid, and solid food products to curtail the limitations above. This review provides an insight into UV light-emitting diodes (UV-LEDs)' potential as an alternative to the traditional UV lamps for microbial inactivation in liquid and solid media. Also, the mechanisms of inactivation of lone and combined UVA-, UVB-, and UVC-LEDs were discussed. The strategies utilized to improve the efficacy between the UV-LED treatments at various wavelengths were summarized. Combining different UV-LEDs treatments at different wavelengths have a synergistic effect and suppression of microbial cell reactivation. The UV-LED-based advanced oxidation processes (AOPs) also have high germicidal action against numerous microorganisms and are efficient for the degradation of micropollutants. Among the UV-LEDs discussed, UVC-LED has the most antimicrobial effect with the most efficient micropollutants decomposition with regards to UV-LED-based AOPs. This review has provided vital information for future application, development, and customization of UV-LED systems that can meet the food and water safety requirements and energy efficiency.

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“…For this reason it is necessary to employ UV lamps, which have high operational costs. Recently, several research groups, in an effort to reduce treatment operational costs, have focused on renewable energy sources, such as natural solar radiation in compound parabolic collectors (CPC) [20], or on more efficient UV lamps, such as UV LEDs [21][22][23]; and in recent years, the application of UV LEDs lamps has been mainly reported with reference to the discolouration of dyes [24,25], and the degradation of organic compounds [26,27].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic discolouration of Reactive Black 5 by UV-A LEDs and solar radiation

Rodríguez-Chueca

Ferreira

Fernandes

et al. 2015

Journal of Environmental Chemical Engineering

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A B S T R A C TOne of the most important disadvantages of photocatalytic treatments is the high cost associated with the use of UV lamps. In this work, the efficiency of two UV-A LEDs (ultraviolet-a light emitting diodes) photosystems as a low cost alternative to conventional UV lamps was tested. The efficiency of the two UV-A LEDs photosystems was compared to that of the most economical UV source-solar radiation. To this end, the oxidative discolouration of Reactive Black 5 (RB5) aqueous solutions was studied using photocatalysis with different concentrations of TiO 2 (0.5-1 g/L) and H 2 O 2 (1.76, 4.41, 8.82 and 17.64 mM), exposed to different radiation sources: UV-A LEDs and solar radiation. The use of H 2 O 2 increased the discolouration rate of RB5; however, an excessive dosage reduced the yield of the treatment, and the best results were attained with a concentration of 8.82 mM of H 2 O 2 . Strong differences were observed between the use of UV-A LEDs (23 W/m 2 ) and solar radiation. In both cases total discolouration was observed, but the discolouration rate was considerably higher with solar radiation. However, the use of a more powerful UV-A LED photo-system (85 W/m 2 ) allowed the achievement of higher discolouration rates (k = 0.284 min À1 ) than those obtained with solar radiation (k = 0.189 min À1 ) using only 0.5 g/L of TiO 2 . Therefore, UV-A LED radiation is a serious alternative to conventional UV lamps, since they are ecofriendly, have a low operational cost and high energy efficiency.

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Application of high intensity UVC-LED for the removal of acetamiprid with the photo-Fenton process

Cited by 68 publications

References 36 publications

Heterogeneous Fenton catalysts: A review of recent advances

Heterogeneous Fenton catalysts: A review of recent advances

Recent advances on the application of UV‐LED technology for microbial inactivation: Progress and mechanism

Photocatalytic discolouration of Reactive Black 5 by UV-A LEDs and solar radiation

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