Mesoporous Na+SiO2 spheres for efficient removal of Cr3+ from aqueous solution

Wu, Zhejian; Chen, Rong; Gan, Qimao; Li, Jian; Zhang, Tuqiao

doi:10.1016/j.jece.2018.02.025

Journal of Environmental Chemical Engineering

2018

DOI: 10.1016/j.jece.2018.02.025

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Mesoporous Na+SiO2 spheres for efficient removal of Cr3+ from aqueous solution

Zhejian Wu

Rong Chen

Qimao Gan

et al.

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Cited by 5 publications

(1 citation statement)

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“…Due to health effects, residual effluents containing Cr (VI) ions must be treated before releasing them into the environment or transforming them into less toxic forms [7]. The treatment of this type of effluent is generally carried out by transforming Cr (VI) into Cr (III), which is less harmful and can precipitate in neutral or alkaline conditions to Cr (OH)3, which can be easily disposed of as solid waste [8].…”

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confidence: 99%

Optimizing Cr(VI) Reduction in Plastic Chromium Plating Wastewater: Particle Size, Irradiation, Titanium Dose

Santis,

Arbeláez,

Cardenas

et al. 2024

Emerg Sci J

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The preservation of the aquatic environment and water systems has been a fundamental objective that has led great scientists and researchers to seek new alternatives or techniques that allow the decontamination of water sources. The plastic chromium plating industries have been identified as important sources of contamination since their residues are characterized by having considerable amounts of hexavalent chromium Cr (VI), which alters the stability of water resources and can affect effluents on the surface and the subsoil. Given this problem, the need to improve the usual methods and techniques for wastewater treatment with more effective solutions, such as photocatalysis, which presents significant advantages over the inefficiency of traditional methods, is recognized. However, given the limited availability of research in the country that addresses the removal of hexavalent chromium from the wastewater of these industries, this work focuses on optimizing the process by varying conditions of variables such as particle size, catalyst dose, and irradiation time. The optimization of the photocatalysis process was evaluated using the Box-Behnken experimental design. The results show that contaminant removal occurred when the particle size was 0.177 mm. This particle size showed the highest photocatalytic activity, with 100% removal at 45 minutes. These findings represent a significant step towards solving the problem of contamination in this business sector by this pollutant and contribute to preserving our water resources. Doi: 10.28991/ESJ-2024-08-01-02 Full Text: PDF

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mentioning

confidence: 99%

Optimizing Cr(VI) Reduction in Plastic Chromium Plating Wastewater: Particle Size, Irradiation, Titanium Dose

Santis,

Arbeláez,

Cardenas

et al. 2024

Emerg Sci J

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Coupling of self-supporting geopolymer membrane with intercepted Cr(III) for dye wastewater treatment by hybrid photocatalysis and membrane separation

Chen

Zhang

et al. 2020

Applied Surface Science

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Investigation on adsorption behaviors of heavy metal ions (Cd2+, Cr3+, Hg2+ and Pb2+) through low-cost/active manganese dioxide-modified magnetic biochar derived from palm kernel cake residue

Maneechakr

Mongkollertlop

2020

Journal of Environmental Chemical Engineering

124

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Mesoporous Na+SiO2 spheres for efficient removal of Cr3+ from aqueous solution

Cited by 5 publications

References 44 publications

Optimizing Cr(VI) Reduction in Plastic Chromium Plating Wastewater: Particle Size, Irradiation, Titanium Dose

Optimizing Cr(VI) Reduction in Plastic Chromium Plating Wastewater: Particle Size, Irradiation, Titanium Dose

Coupling of self-supporting geopolymer membrane with intercepted Cr(III) for dye wastewater treatment by hybrid photocatalysis and membrane separation

Investigation on adsorption behaviors of heavy metal ions (Cd2+, Cr3+, Hg2+ and Pb2+) through low-cost/active manganese dioxide-modified magnetic biochar derived from palm kernel cake residue

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