International Journal of Environmental Science and Development

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Volume 15 Number 4 (2024)

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IJESD 2024 Vol.15(4): 185-191
doi: 10.18178/ijesd.2024.15.4.1484

Sequential Dual Coagulation and Photo-Fenton Oxidation for Real Distillery Wastewater Treatment

Khyle Glainmer N. Quiton*, Ian Carlo T. Abareta, Cyrus Alexander D. Vizon, and Michelle C. Almendrala
School of Chemical, Biological, and Materials Engineering and Sciences, Mapua University, Intramuros, Manila, Philippines
Email: kgnquiton@mapua.edu.ph (K.G.N.Q.); ictabareta@mymail.mapua.edu.ph (I.C.T.A.); cadvizon@mymail.mapua.edu.ph (C.A.D.V.); mcalmendrala@mapua.edu.ph (M.C.A.)
*Corresponding author
Manuscript received November 6, 2023; revised February 2, 2024; accepted February 6, 2024; published July 19, 2024

Abstract—Distillery effluent leads to extensive surface water and groundwater pollution. Removal of various contaminants and color from this type of effluent has attracted great attention from environmental and aesthetic point of view. Distillery Wastewater (DWW) is hard to dispose due to its dark brown color, high ash content, low pH, undesirable viscosity, hydrophilicity, and high levels of Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). The treatment of DWW has become challenging with conventional treatment methods. With this, a unique hybrid treatment method utilizing a dual coagulation process followed by photo-Fenton oxidation under UV-C light irradiation was investigated for their combined treatment capabilities on the removal of COD, TSS, turbidity, and color from bioethanol DWW. The experimental design used a sequential experimentation approach based on the optimum result on the following sequence of optimizations: i) dual coagulant dosage using Aluminum Chlorohydrate (ACH) and Polydiallyldimethylammonium Chloride (PolyDADMAC); ii) dual coagulation settling time; iii) photo-Fenton H2O2 concentration; and iv) photo-Fenton UV-C exposure time. The optimum dosage for the dual coagulation process is 90% ACH:10% PolyDADMAC with 5 h of settling yielding color and COD removal of 47.75% and 92.56%, respectively. Subsequently, 245 × 10-3 mol/L of H2O2 concentration with a UV-C exposure time of 5 hours is optimum for the photo-Fenton process, yielding an overall color and COD removal of 94.25% and 99.81%, respectively.

Keywords—color removal, dual coagulation, Fenton reaction, molasses distillery wastewater, photo-Fenton, sequential, wastewater treatment

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Cite: Khyle Glainmer N. Quiton, Ian Carlo T. Abareta, Cyrus Alexander D. Vizon, and Michelle C. Almendrala, "Sequential Dual Coagulation and Photo-Fenton Oxidation for Real Distillery Wastewater Treatment," International Journal of Environmental Science and Development vol. 15, no. 4, pp. 185-191, 2024.

Copyright © 2024 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).