Degradation of organic pollutants in the presence of new Mn (II) complexes under ambient light or darkness conditions

Vallavoju, Rohini; Kore, Ranjith; P., Radhika; Subburu, Mahesh; Manohar, B.; Chetti, Prabhakar; Pola, Someshwar

doi:10.1016/j.jphotochem.2023.114775

Cited by 4 publications

(1 citation statement)

References 55 publications

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“…Around 800 000 tons of dyes are used annually worldwide for a variety of purposes, including cosmetics, printing, textile colouring, and paper, among others; nevertheless, during the dyeing process, 20% of the dyes are lost, 2 which are carcinogenic and harm the aquatic ecosystem and all organisms, even at extremely low concentrations. 3 Methylene blue (MB) is very toxic and carcinogenic and is widely utilized in a variety of industries, such as textile, food, printing, paper, detergent, and coating production, laboratories, and the medical sector. In some species, exposure to MB has been linked to haematological toxicity, the development of Heinz bodies, and even haemolytic anaemia.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic and photocatalytic activity of CuTiO₃ perovskites for complete degradation of methylene blue under sunlight irradiation

F. M.,

C. C.,

D. B.

et al. 2024

React. Chem. Eng.

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Section: Introductionmentioning

confidence: 99%

Electrocatalytic and photocatalytic activity of CuTiO₃ perovskites for complete degradation of methylene blue under sunlight irradiation

F. M.,

C. C.,

D. B.

et al. 2024

React. Chem. Eng.

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Simultaneous Cr(VI) Reduction and Dexamethasone Phosphate Oxidation with Organo-metallic Sludge Formation Under UV Irradiation: Kinetics, Degradation Pathways, and Mechanism

Sarkhosh,

Azizi,

Mokrani

et al. 2024

Arab J Sci Eng

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In this study, we investigated the concurrent elimination of two distinct contaminants: organic matter in the form of dexamethasone phosphate (DexP) and an inorganic substance, chromium (Cr), employing UV irradiation. UV irradiation serves as a potent tool for breaking down organic materials, leading to the production of benign by-products, namely CO2 and H2O. Under optimal conditions characterized by a 30:1 DexP/Cr molar ratio and a pH level of 9, remarkable removal efficiencies were attained. In a mere 20 min, approximately 100% of DexP and 82.73% of Cr were effectively removed. Intriguingly, the removal of Cr exhibited an initially sluggish rate, with deposition commencing only after the breakdown of the DexP structure. This transformation was accompanied by the emergence of various sludge forms, each possessing unique characteristics. Utilizing Fourier-transform infrared (FTIR) analysis, we identified these sludge forms as chromium(III) hydroxide (green sludge), chromium(III) hydroxide (brown sludge), chromium(III) oxide (tiny green crystals), chromium(II) acetate chromium trioxide (red brick), and chromium oxide (black sludge). Further experimentation with varying concentrations of Cr and DexP, ranging from 50 to 150 mg L−1, yielded a range of rate constants (kobs) from 0.33 to 0.15 and removal efficiencies (robs) from 16.8 to 23.4% in the UV/DexP/Cr process. Energy efficiency output (EEO) calculations revealed that Cr precipitation ranged from 24.65 to 5.74 kW h m−3, whereas DexP EEO ranged from 12.54 to 4.73 kW h m−3. Of significant importance is the observation that when these two contaminants are removed simultaneously, the overall energy consumption is substantially lower compared to the scenario where pollutants are addressed individually. This finding underscores the efficiency and potential energy cost savings achievable through the concurrent removal of DexP and Cr using UV irradiation, making it a promising approach for environmental remediation.

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Synthesis of new Cu/Zn (II) complexes for sonophotocatalysis for mineralization of pesticides and agrochemical wastewater

Parikirala,

Kore,

Rohini

et al. 2024

Journal of Environmental Chemical Engineering

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Degradation of organic pollutants in the presence of new Mn (II) complexes under ambient light or darkness conditions

Cited by 4 publications

References 55 publications

Electrocatalytic and photocatalytic activity of CuTiO₃ perovskites for complete degradation of methylene blue under sunlight irradiation

Electrocatalytic and photocatalytic activity of CuTiO₃ perovskites for complete degradation of methylene blue under sunlight irradiation

Simultaneous Cr(VI) Reduction and Dexamethasone Phosphate Oxidation with Organo-metallic Sludge Formation Under UV Irradiation: Kinetics, Degradation Pathways, and Mechanism

Synthesis of new Cu/Zn (II) complexes for sonophotocatalysis for mineralization of pesticides and agrochemical wastewater

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Degradation of organic pollutants in the presence of new Mn (II) complexes under ambient light or darkness conditions

Cited by 4 publications

References 55 publications

Electrocatalytic and photocatalytic activity of CuTiO3 perovskites for complete degradation of methylene blue under sunlight irradiation

Electrocatalytic and photocatalytic activity of CuTiO3 perovskites for complete degradation of methylene blue under sunlight irradiation

Simultaneous Cr(VI) Reduction and Dexamethasone Phosphate Oxidation with Organo-metallic Sludge Formation Under UV Irradiation: Kinetics, Degradation Pathways, and Mechanism

Synthesis of new Cu/Zn (II) complexes for sonophotocatalysis for mineralization of pesticides and agrochemical wastewater

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Product

Resources

About

Electrocatalytic and photocatalytic activity of CuTiO₃ perovskites for complete degradation of methylene blue under sunlight irradiation

Electrocatalytic and photocatalytic activity of CuTiO₃ perovskites for complete degradation of methylene blue under sunlight irradiation