Use of advance oxidation process to improve the biodegradability of olive oil mill effluents

• Published in: Process safety and environmental protection Vol. 98; pp. 319 - 324
• Main Authors: Alver, Alper, Baştürk, Emine, Kılıç, Ahmet, Karataş, Mustafa
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2015
• Subjects: Advanced oxidation; Biodegradability; Carbon; Coagulation; Effluents; Fenton; Mills; Olea; Olive mill; Olives; Phenol; Pollutants; Wastewater treatment; Fenton; Phenol; Olive mill; Advanced oxidation; Coagulation
• ISSN: 0957-5820; 1744-3598
• DOI: 10.1016/j.psep.2015.09.002

•OMW treatment with combined coagulation and Fenton oxidation was investigated.•Removal efficiency depends on coagulant dosage, pH, and Fe2+/H2O2 ratio.•The degradation kinetic of phenol was best fitted pseudo-second-order.•High predictive capability of model was developed for COD removal.•A high degradation efficiency of phenol was achieved. In this study, recalcitrant total phenol (TPh) and organic matter removal were investigated at olive mill wastewater (OMW) in sequential Coagulation and Fenton system. This study focused on different operational parameters such as pH, H2O2, and Fe2+ dosages, and [Fe2+]/[H2O2] ratios. The optimum conditions were determined as; pH=3; [Fe2+]=2.5g/L; [Fe2+]/[H2O2]=2.5. A higher treatment efficiency was achieved at sequential Coagulation and Fenton system (COD, 65.5%) and TPh, 87.2%), compared to coagulation process (COD, 51.4%; total organic carbon (TOC), 38.6% and total nitrogen (TN) 52.1%). This study demonstrated that the Coagulation and Fenton process has a potential for efficient removal of phenolic pollutants from wastewater.