Simultaneous removal of phenol and linear alkylbenzene sulfonate from automotive service station wastewater: Optimization of coupled electrochemical and physical processes

• Published in: Separation science and technology Vol. 55; no. 17; pp. 3184 - 3194
• Main Authors: Emamjomeh, Mohammad Mahdi, Mousazadeh, Milad, Mokhtari, Nima, Jamali, Hamzeh Ali, Makkiabadi, Mahmoud, Naghdali, Zohreh, Hashim, Khalid S., Ghanbari, Reza
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 21.11.2020; Taylor & Francis Ltd
• Subjects: Activated carbon; Alkylbenzene sulfonate; Alkylbenzenes; Alkylbenzenesulfonates; Automotive service station; Electrochemical/physical processes; Electrochemistry; Electrocoagulation; Energy consumption; Feasibility; Feasibility studies; Flotation; LAS removal; Linear alkylbenzene sulfonate; Operating costs; Optimization; phenol removal; Phenols; Raw materials; Reaction time; Removal; Sand filters; Sedimentation; Service stations; Wastewater
• ISSN: 0149-6395; 1520-5754
• DOI: 10.1080/01496395.2019.1675703

This work investigates the feasibility of the coupled electrochemical (electrocoagulation/flotation) and physical processes (sedimentation, sand filtration, and activated carbon) for the treatment of automotive service wastewater (ASWW). The impacts of critical parameters, viz. pH solution, reaction time and current intensity on linear alkylbenzene sulfonate (LAS), and phenol removal efficiencies as well as energy consumption and operating cost are studied. Central composite design results reveal that at the optimum conditions, LAS and phenol removal efficiencies, energy consumption and operating cost are obtained 96.7%, 87.65%, 15.99 Wh, 0.001 US$, respectively. This process reveals a feasible technology for phenol and LAS removal from ASWW.