Evaluating the solar Photo-Fenton as photocatalyst process by Response surface methodology to treat the saline water

Al-Balushi, Majan; Lakkimsetty, Nageswara Rao; Varghese, M. J.; Lakavat, Motilal; Parne, Saidi Reddy; Gandi, Suman

doi:10.1016/j.matpr.2021.07.024

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…Fenton reagent dosage influences the reaction rate, degrading effectivity, and operating costs. One of the primary challenges in photo-Fenton is estimating the appropriate concentrations of reagents (Al-Balushi et al 2021;Hernández-Coronado et al 2021;. Due to the obvious importance of H 2 O 2 concentration for determining quantitative oxidation and iron salt dose, both reagents must be present at their optimal concentrations.…”

Section: Fenton Reagent Dosagementioning

confidence: 99%

Solar photo-oxidation of recalcitrant industrial wastewater: a review

et al. 2022

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Conventional methods to clean wastewater actually lead to incomplete treatments, calling for advanced technologies to degrade recalcitrant pollutants. Herein we review solar photo-oxidation to degrade the recalcitrant contaminants in industrial wastewater, with focus on photocatalysts, reactor design and the photo-Fenton process. We discuss limitations due to low visible-light absorption, catalyst collection and reusability, and production of toxic by-products. Photodegradation of refractory organics by solar light is controlled by pH, photocatalyst composition and bandgap, pollutant properties and concentration, irradiation type and intensity, catalyst loading, and the water matrix.

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Section: Fenton Reagent Dosagementioning

confidence: 99%

Solar photo-oxidation of recalcitrant industrial wastewater: a review

et al. 2022

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“…Recent studies have shown the effectiveness of advanced oxidation processes (AOPs) as a method of treating numerous wastewater pollutants. [ 20–23 ] These studies show that numerous contaminants can be removed using homogenous and heterogeneous photocatalytic processes that employ very effective and photoactive catalysts. In particular, a recent review paper by Tawfik et al has outlined the details of the solar photo‐oxidation of recalcitrant industrial wastewater.…”

Section: Introductionmentioning

confidence: 99%

Efficient photocatalytic removal of N‐nitrosamines from amine washing wastewater using bismuth tungstate

2023

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The most mature and practical technology to reduce industrial CO2 emissions, the main contributor to global warming, is amine‐based post‐combustion CO2 capture. However, this results in amine degradation products that pose a threat to human health as well as marine life. To reduce the impact on human health and marine life, identifying and treating carcinogenic and mutagenic compounds like N‐nitrosamines is extremely important. Photocatalysis, in particular, an advanced oxidation process which uses a UV light source and semiconductor catalysts is studied for the degradation of organic and inorganic pollutants. N‐Nitrosodiethylamine (NDEA) is treated with strong reactive hydroxyl radicals generated by a bismuth tungstate (Bi2WO6) semiconductor under UV/visible irradiation. The Bi2WO6 was studied both in pure form and surface‐modified forms using transition metal impregnation like Ag, Fe, Cu, and La. Various catalyst characterization techniques like Brunauer–Emmett–Teller (BET), X‐ray diffraction analysis (XRD), UV–visible, and scanning electron microscopy–energy‐dispersive X‐ray (SEM‐EDS) are used to study the surface textural and morphological properties of the catalyst. Furthermore, the effect of pH of the solution, catalyst dosing, and metal impregnation (%) on the photocatalytic degradation of NDEA is analyzed. The face centred‐central composite design (FC‐CCD) experimental design method was used through response surface methodology (RSM) and optimization studies for removal of NDEA. The quadratic model was obtained as a functional link between NDEA concentration and three operation variables for all metal impregnated Bi2WO6. The results showed that the pH of the solution was the most significant factor compared to other variables like catalyst dosing and metal impregnation. The average degradation efficiency of NDEA was 89.2% for Fe‐Bi2WO6, 87.4% Ag‐Bi2WO6, 86.9% for La‐Bi2WO6, and 85% for Cu‐Bi2WO6.

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“…In recent years, photocatalysis has become increasingly popular in the development of energy-e cient, ecologically bene cial, and long-lasting processes [1][2][3][4][5][6]. Despite the fact that other photo-catalyst candidates have been investigated, titanium dioxide (TiO 2 ) has been the most thoroughly investigated material, and it is now considered to be the most likely photocatalyst for industrial-scale applications due to its high photoactivity e ciency, long-term stability, nontoxicity, and low price [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Bio-Inspired C/N/TiO2 Hybrid Composite Heterostructure: Enhanced Photocatalytic Activity under Visible Light

Gandi

Parne

et al. 2022

Journal of Nanotechnology

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The hydrothermal treatment was used to create a natural hierarchical bio-inspired carbon and nitrogen-doped C/N/TiO2 hybrid composite. It is the goal of this work to investigate the photocatalytic activity of bio-inspired C/N/TiO2 hybrid composite. Techniques such as X-ray powder diffraction, scanning electron microscopy, UV-Vis absorption spectroscopy, FTIR, Raman, and photoluminescence spectroscopy were used to explore the structural, morphological, and photocatalysis characteristics of the bio-inspired C/N/TiO2 hybrid composite. By doping carbon and nitrogen, TiO2 nanotubes were able to improve the photocatalyst properties of the C/N/TiO2 hybrid composite, decrease the energy band gap (∼2.55 eV), and result in increased electron transfer efficiency when compared to pure TiO2. The photocatalytic degradation of pollutants (rhodamine B (RhB)) is made possible by the use of a bio-inspired C/N/TiO2 hybrid composite that has high interconnectivity and an easily accessible surface.

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Evaluating the solar Photo-Fenton as photocatalyst process by Response surface methodology to treat the saline water

Cited by 8 publications

References 8 publications

Solar photo-oxidation of recalcitrant industrial wastewater: a review

Solar photo-oxidation of recalcitrant industrial wastewater: a review

Efficient photocatalytic removal of N‐nitrosamines from amine washing wastewater using bismuth tungstate

Bio-Inspired C/N/TiO2 Hybrid Composite Heterostructure: Enhanced Photocatalytic Activity under Visible Light

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