Detoxification of As(III) in aqueous media by using photo-Fenton method

Wahyuni, E. T. and Nurhikmatillah, A. and Kurniasari, H. and Siswanta, D. (2021) Detoxification of As(III) in aqueous media by using photo-Fenton method. GLOBAL NEST JOURNAL, 23 (4). pp. 550-555. ISSN 1790-7632

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Abstract

In this paper, photo-Fenton method has been systematically examined to oxidize the toxic and mobile As(III) in the solution by (OH)-O-center dot radicals resulted from the reactions between Fe2+ and H2O2 under UV light, to form the less toxic and insoluble As(V). The effects of various experimental parameters including initial Fe2+ and H2O2 concentrations, working pH, and contact time were studied through a batch experiment. The concentration of As(V) resulted from the photo-oxidation was determined by visible spectrophotometry method based on the formation of arsenate molybdate solution. The results of the research attributed noticeably that the As(III) could be oxidized through photo-Fenton process to form As(V) that was assigned by a considerable decline in the concentratio n. The maximal oxidation of As(III) with 10 mg L-1 of the concentration in 50 mL of the aqueous solution, that was about 85%, can be reached in the presence of Fe2+ 10(-2) mole L-1, H2O2 5. 10(-2) mole L-1 at the working pH 3 and within 3 h of the reaction time. It has been also detected that for reaching the permissible level (lower than 0.01 mg L-1), three stages of the photo-Fenton process were required.

Item Type: Article
Uncontrolled Keywords: Photo-oxidation; photo-Fenton; As(III); As(V)
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Mathematics and Natural Sciences > Chemistry Department
Depositing User: Sri JUNANDI
Date Deposited: 24 Oct 2024 00:50
Last Modified: 24 Oct 2024 00:50
URI: https://ir.lib.ugm.ac.id/id/eprint/8918

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