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Umi Hamidah
Research Center for Environmental and Clean Technology, National Research and Innovation Agency Collaborative Research Center for Zero Waste and Sustainability
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Materials Science & Nanotechnology

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Performance and Kinetics Evaluation of Pyrite-Activated Heterogeneous Fenton-Like Oxidation for COD Removal from Real Small-Scale Textile Effluent Wenny Irawaty; Sandy Budi Hartono; Christian Julius Wijaya; Chintya Gunarto; Nathania Puspitasari; Jindrayani Nyoo Putro; Geraldy Natanael Pardosi; Umi Hamidah
Reaktor Volume 26 No.2 August 2026
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.82807

Abstract

This study evaluated the performance of pyrite-activated heterogeneous Fenton-like oxidation for the treatment of real effluent generated from a local batik/textile industry. The influence of key operational parameters, including initial pH, hydrogen peroxide concentration, and pyrite dosage, was systematically investigated to determine the optimal conditions for COD removal. The results showed that acidic conditions significantly enhanced oxidation performance, with maximum COD removal achieved at pH 3. The optimal operating parameters were identified as 10 g L⁻¹ H₂O₂, 1 g L⁻¹ pyrite dosage, and a reaction time of 6 h at room temperature, resulting in approximately 90% COD removal. Kinetic evaluation indicated that the degradation process followed a pseudo-first-order model, as evidenced by a high correlation coefficient (R²), with an apparent rate constant of 0.362 min⁻¹. The findings suggest that hydrogen peroxide was present in excess, allowing the reaction rate to be primarily governed by COD concentration. Overall, this study demonstrates the potential applicability of natural pyrite as an effective and low-cost catalyst for treating real textile effluent. Further investigation into catalyst stability and reusability is recommended to enhance the economic feasibility of the process.
Co-Authors Chintya Gunarto Christian Julius Wijaya Geraldy Natanael Pardosi Jindrayani Nyoo Putro Nathania Puspitasari Sandy Budi Hartono Wenny Irawaty