Effect of Molasses Addition As Biodegradable Material on Phenol Removal Under Anaerobic Conditions Publisher



Almasi A¹ ; Dargahi A¹ ; Amrane A² ; Fazlzadeh M^{3, 4} ; Soltanian M¹ ; Hashemian A⁵ Show Affiliations
Source: Environmental Engineering and Management Journal Published:2018

Abstract

The link between the concentration of biodegradable organic matter and the rate of phenol removal in anaerobic conditions was examined in this work. This study was undertaken using a laboratory scale anaerobic stabilization pond and five closed reactors at two retention times, 2 and 5 days. The initial concentration of phenol and soluble COD decreased in the anaerobic pond effluent and the reactors with increasing hydraulic retention time; 98.6% phenol removal was observed in reactors after 50 days and in the presence of 1000 mg/L COD, while 98.8% removal was obtained after 5 days in the anaerobic stabilization pond system in the presence of 500 mg/L COD. Two-way ANOVA test with Scheffe post-hoc confirmed that phenol removal was optimal for 1000-2000 mg/L biodegradable COD and 50 days retention time in the reactors and with 500 mg/L biodegradable COD and 5 days retention time in the anaerobic pond. © 2018, Gheorghe Asachi Technical University of Iasi, Romania. All rights reserved.