Effect of reagents addition method in Fenton oxidation on the destruction of organics in palm oil mill effluent

Gamaralalage, Disni; Sawai, Osamu; Nunoura, Teppei

Abstract

H2O2 and Fe2+ are the reagents added in Fenton oxidation and their rapid consumption affects the oxidation performances. In this study, effect of reagents addition methods on the oxidation performances in Fenton process was studied considering the palm oil mill effluent (POME) degradation. POME is a thick, acidic, brownish and odorous wastewater containing high organics and nitrogen which generates during crude palm oil production process. Seven reagents addition methods as “conventional”, “continuous H2O2”, “fractional H2O2”, “continuous Fe2+”, “fractional Fe2+”, “continuous Fe2+ and H2O2”, “fractional Fe2+ and H2O2” were examined under COD:H2O2:Fe2+ molar ratio of 1:4:1 at pH 2-3 to identify the most effective methods. Identical experiments were conducted for methanol as a reference. Fe2+ addition methods heavily affected the organics degradation over H2O2 addition methods. The highest TOC and nitrogen reductions were obtained by “continuous Fe2+” addition. Higher concentration of Fe2+ during “continuous Fe2+” addition was detected over other methods, indicating the effective progressing of Fenton reaction. Fractional and continuous addition methods achieved higher organics degradations over conventional method except for the “continuous H2O2” addition. Our findings on the effects of reagents addition methods will assist on enhancing Fenton oxidation performances in future studies.

Citation

Gamaralalage, D., Sawai, O., & Nunoura, T. (2020). Effect of reagents addition method in Fenton oxidation on the destruction of organics in palm oil mill effluent. Journal of Environmental Chemical Engineering, 8(4), Article 103974. https://doi.org/10.1016/j.jece.2020.103974

• Journal Article Type: Article
• Acceptance Date: Apr 18, 2020
• Online Publication Date: May 23, 2020
• Publication Date: 2020-08
• Deposit Date: Apr 3, 2023
• Journal: Journal of Environmental Chemical Engineering
• Print ISSN: 2213-2929
• Electronic ISSN: 2213-3437
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 8
• Issue: 4
• Article Number: 103974
• DOI: https://doi.org/10.1016/j.jece.2020.103974
• Keywords: Process Chemistry and Technology; Pollution; Waste Management and Disposal; Chemical Engineering (miscellaneous)
• Public URL: https://nottingham-repository.worktribe.com/output/19010447
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S2213343720303225?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: Effect of reagents addition method in Fenton oxidation on the destruction of organics in palm oil mill effluent; Journal Title: Journal of Environmental Chemical Engineering; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.jece.2020.103974; Content Type: article; Copyright: © 2020 Elsevier Ltd. All rights reserved.