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Photocatalytical removal of inorganic and organic arsenic species from aqueous solution using zinc oxide semiconductor.
Photochem Photobiol Sci. 2013 Apr; 12(4):653-9.PP

Abstract

The photocatalytic removal of arsenite [As(III)] and monomethylarsonic acid [MMA(V)] was investigated in the presence of UV light (350 nm) and aqueous suspensions of ZnO synthesized by the sol-gel technique. Photocatalytic removal of these potent arsenic compounds results in the effective and rapid mineralization to less toxic inorganic arsenate [As(V)]. The effect of ZnO loading and solution pH on the treatment efficiency of the UV/ZnO photocatalytic process was evaluated. The optimal conditions for the removal of 5 mg L(-1) [As(III)] and [MMA(V)] aqueous solutions were observed at catalyst loadings of 0.25 and 0.50 g L(-1) with solution pH values of 7 and 8, respectively. Under these conditions, the activity of photocatalyst sol-gel ZnO was compared with TiO2 Degussa P25 and commercial ZnO catalyst. The results demonstrate that the high adsorption capacity of ZnO synthesized by sol-gel gives enhanced removal of arsenic species from water samples, indicating that this catalyst is a promising material for treatment of arsenic contaminated groundwater.

Authors+Show Affiliations

Universidad Autónoma de Nuevo León, UANL, Department of Chemistry Sciences, San Nicolás de los Garza, N.L., 66451, México.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23064294

Citation

Rivera-Reyna, Nidia, et al. "Photocatalytical Removal of Inorganic and Organic Arsenic Species From Aqueous Solution Using Zinc Oxide Semiconductor." Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology, vol. 12, no. 4, 2013, pp. 653-9.
Rivera-Reyna N, Hinojosa-Reyes L, Guzmán-Mar JL, et al. Photocatalytical removal of inorganic and organic arsenic species from aqueous solution using zinc oxide semiconductor. Photochem Photobiol Sci. 2013;12(4):653-9.
Rivera-Reyna, N., Hinojosa-Reyes, L., Guzmán-Mar, J. L., Cai, Y., O'Shea, K., & Hernández-Ramírez, A. (2013). Photocatalytical removal of inorganic and organic arsenic species from aqueous solution using zinc oxide semiconductor. Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology, 12(4), 653-9. https://doi.org/10.1039/c2pp25231g
Rivera-Reyna N, et al. Photocatalytical Removal of Inorganic and Organic Arsenic Species From Aqueous Solution Using Zinc Oxide Semiconductor. Photochem Photobiol Sci. 2013;12(4):653-9. PubMed PMID: 23064294.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytical removal of inorganic and organic arsenic species from aqueous solution using zinc oxide semiconductor. AU - Rivera-Reyna,Nidia, AU - Hinojosa-Reyes,Laura, AU - Guzmán-Mar,Jorge Luis, AU - Cai,Yong, AU - O'Shea,Kevin, AU - Hernández-Ramírez,Aracely, PY - 2012/10/16/entrez PY - 2012/10/16/pubmed PY - 2013/9/11/medline SP - 653 EP - 9 JF - Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology JO - Photochem Photobiol Sci VL - 12 IS - 4 N2 - The photocatalytic removal of arsenite [As(III)] and monomethylarsonic acid [MMA(V)] was investigated in the presence of UV light (350 nm) and aqueous suspensions of ZnO synthesized by the sol-gel technique. Photocatalytic removal of these potent arsenic compounds results in the effective and rapid mineralization to less toxic inorganic arsenate [As(V)]. The effect of ZnO loading and solution pH on the treatment efficiency of the UV/ZnO photocatalytic process was evaluated. The optimal conditions for the removal of 5 mg L(-1) [As(III)] and [MMA(V)] aqueous solutions were observed at catalyst loadings of 0.25 and 0.50 g L(-1) with solution pH values of 7 and 8, respectively. Under these conditions, the activity of photocatalyst sol-gel ZnO was compared with TiO2 Degussa P25 and commercial ZnO catalyst. The results demonstrate that the high adsorption capacity of ZnO synthesized by sol-gel gives enhanced removal of arsenic species from water samples, indicating that this catalyst is a promising material for treatment of arsenic contaminated groundwater. SN - 1474-9092 UR - https://www.unboundmedicine.com/medline/citation/23064294/Photocatalytical_removal_of_inorganic_and_organic_arsenic_species_from_aqueous_solution_using_zinc_oxide_semiconductor_ L2 - https://doi.org/10.1039/c2pp25231g DB - PRIME DP - Unbound Medicine ER -