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Combined use of photocatalyst and adsorbent for the removal of inorganic arsenic(III) and organoarsenic compounds from aqueous media.
J Hazard Mater. 2005 Apr 11; 120(1-3):75-80.JH

Abstract

A novel method for the removal of inorganic arsenic(III) (As(III)), monomethylarsonate (MMA), and dimethylarsinate (DMA) from aqueous media, was proposed and investigated. This method involves the combined use of TiO2-photocatalyst and an adsorbent, which has a high ability of As(V) adsorption, under photo-irradiation. When an aqueous solution of As(III) was stirred and irradiated by sunlight or xenon lamp in the presence of TiO2 suspension, the oxidation of As(III) into As(V) was effectively attained. By use of the same photocatalytic reaction, MMA and DMA were also degraded into As(V), while the total organic carbon (TOC) in the aqueous phase was decreased. When an aqueous solution of As(III) was stirred with a mixed suspension of TiO2 and an adsorbent for As(V) (activated alumina) under sunlight irradiation, the arsenic removal reached 89% after 24 h. By use of the same photocatalyst-adsorbent system, 98% of MMA and 97% of DMA were removed. The mechanism of the removal of arsenic species by the photocatalyst-adsorbent system was discussed.

Authors+Show Affiliations

Department of Bioengineering, Faculty of Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15811667

Citation

Nakajima, Tsunenori, et al. "Combined Use of Photocatalyst and Adsorbent for the Removal of Inorganic arsenic(III) and Organoarsenic Compounds From Aqueous Media." Journal of Hazardous Materials, vol. 120, no. 1-3, 2005, pp. 75-80.
Nakajima T, Xu YH, Mori Y, et al. Combined use of photocatalyst and adsorbent for the removal of inorganic arsenic(III) and organoarsenic compounds from aqueous media. J Hazard Mater. 2005;120(1-3):75-80.
Nakajima, T., Xu, Y. H., Mori, Y., Kishita, M., Takanashi, H., Maeda, S., & Ohki, A. (2005). Combined use of photocatalyst and adsorbent for the removal of inorganic arsenic(III) and organoarsenic compounds from aqueous media. Journal of Hazardous Materials, 120(1-3), 75-80.
Nakajima T, et al. Combined Use of Photocatalyst and Adsorbent for the Removal of Inorganic arsenic(III) and Organoarsenic Compounds From Aqueous Media. J Hazard Mater. 2005 Apr 11;120(1-3):75-80. PubMed PMID: 15811667.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Combined use of photocatalyst and adsorbent for the removal of inorganic arsenic(III) and organoarsenic compounds from aqueous media. AU - Nakajima,Tsunenori, AU - Xu,Yan-Hua, AU - Mori,Yuko, AU - Kishita,Mayumi, AU - Takanashi,Hirokazu, AU - Maeda,Shigeru, AU - Ohki,Akira, PY - 2003/12/21/received PY - 2004/07/21/revised PY - 2004/11/14/accepted PY - 2005/4/7/pubmed PY - 2005/8/17/medline PY - 2005/4/7/entrez SP - 75 EP - 80 JF - Journal of hazardous materials JO - J Hazard Mater VL - 120 IS - 1-3 N2 - A novel method for the removal of inorganic arsenic(III) (As(III)), monomethylarsonate (MMA), and dimethylarsinate (DMA) from aqueous media, was proposed and investigated. This method involves the combined use of TiO2-photocatalyst and an adsorbent, which has a high ability of As(V) adsorption, under photo-irradiation. When an aqueous solution of As(III) was stirred and irradiated by sunlight or xenon lamp in the presence of TiO2 suspension, the oxidation of As(III) into As(V) was effectively attained. By use of the same photocatalytic reaction, MMA and DMA were also degraded into As(V), while the total organic carbon (TOC) in the aqueous phase was decreased. When an aqueous solution of As(III) was stirred with a mixed suspension of TiO2 and an adsorbent for As(V) (activated alumina) under sunlight irradiation, the arsenic removal reached 89% after 24 h. By use of the same photocatalyst-adsorbent system, 98% of MMA and 97% of DMA were removed. The mechanism of the removal of arsenic species by the photocatalyst-adsorbent system was discussed. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/15811667/Combined_use_of_photocatalyst_and_adsorbent_for_the_removal_of_inorganic_arsenic_III__and_organoarsenic_compounds_from_aqueous_media_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(05)00010-5 DB - PRIME DP - Unbound Medicine ER -