Performance of combined organic precipitation, electrocoagulation, and electrooxidation in treating anaerobically treated palm oil mill effluents

Peerawat Khongkliang; Kaewmada Chalearmkul; Kettawan Boonloh; Nunthakan Kanjanasombun; Tipaporn Darnsawat; Jarungwit Boonnorat; Abudukeremu Kadier; Putu Teta Prihartini Aryanti; Chantaraporn Phalakornkule

doi:10.1007/s13201-024-02288-y

Applied Water Science (Sep 2024)

Performance of combined organic precipitation, electrocoagulation, and electrooxidation in treating anaerobically treated palm oil mill effluents

Peerawat Khongkliang,
Kaewmada Chalearmkul,
Kettawan Boonloh,
Nunthakan Kanjanasombun,
Tipaporn Darnsawat,
Jarungwit Boonnorat,
Abudukeremu Kadier,
Putu Teta Prihartini Aryanti,
Chantaraporn Phalakornkule

Affiliations

Peerawat Khongkliang: The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi
Kaewmada Chalearmkul: Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok
Kettawan Boonloh: Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok
Nunthakan Kanjanasombun: Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok
Tipaporn Darnsawat: Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok
Jarungwit Boonnorat: Department of Environmental Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT)
Abudukeremu Kadier: Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences (CAS)
Putu Teta Prihartini Aryanti: Chemical Engineering Department, Faculty of Engineering, Universitas Jenderal Achmad Yani
Chantaraporn Phalakornkule: The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi

DOI: https://doi.org/10.1007/s13201-024-02288-y
Journal volume & issue: Vol. 14, no. 10
pp. 1 – 16

Abstract

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Abstract Palm oil mill effluent (POME), wastewater generated from palm oil production, is known for its extremely high chemical oxygen demand and brownish color. Anaerobic digestion is the primary treatment method for POME in the palm oil industry; however, anaerobically treated POME has high concentrations of residual contaminants and color intensity. This study proposes an approach to treat anaerobically-treated POME in recycled water for industrial applications by integrating preliminary organic precipitation, electrocoagulation, and electrooxidation (EO). The EO process was optimized in terms of the current density, electrolysis time, electrode arrangement, and feed flow rate. At a current density of 60 mA/cm2 and an electrolysis time of 9 min, the EO process with a graphite anode and stainless-steel cathode in the monopolar electrode configuration reduced the phenolic concentration and color in the preliminary-treated POME from 8.95 mg/L and 317.19 ADMI to 0.25 mg/L and 26.10 ADMI, respectively. Additionally, the EO process exhibited a 92.26% efficiency in lowering the ammonium-nitrogen content.

Published in Applied Water Science

ISSN: 2190-5487 (Print); 2190-5495 (Online)
Publisher: SpringerOpen
Country of publisher: Germany
LCC subjects: Technology: Environmental technology. Sanitary engineering: Water supply for domestic and industrial purposes
Website: http://www.springer.com/13201

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