title: Electrocoagulation using a rotated anode: A novel reactor design for textile wastewater treatment.
abstract: This paper investigates the optimum operational conditions of a novel rotated bed electrocoagulation (EC) reactor for the treatment of textile wastewater. The effect of various operational parameters such as rotational speed, current density (CD), operational time (RT), pH, temperature, and inter-electrode distance (IED) on the pollutant removal efficiency were examined. In addition, the consumption of aluminum (Al) and electrical energy, as well as operating costs at optimum conditions were also calculated. The results indicated that the optimum conditions for the treatment of textile wastewater were achieved at CD = 4 mA/cm(2), RT = 10 min, rotational speed = 150 rpm, pH = 4.57, temperature = 25 °C, and IED = 1 cm. The electrode consumption, energy consumption, and operating costs were 0.038 kg/m(3), 4.66 kWh/m(3) and 0.44 US$/m(3), respectively. The removal efficiencies of chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solid (TSS), turbidity and color were 97.10%, 95.55%, 98%, 96% and 98.50%, respectively, at the first 10 min of reaction time, while the phenol compound of the wastewater was almost entirely removed (99.99%). The experimental results confirm that the new reactor design with rotated anode impellers and cathode rings provided high treatment efficiency at a reduced reaction time and with lower energy consumption.
authors.affiliation: Department of Engineering, UTM Razak School of Engineering and Advanced Technology, Universiti Teknologi Malaysia, Jalan Semarak, 54100, Kuala Lumpur, Malaysia.
authors.forename: Ahmed Samir
authors.initials: AS
authors.lastname: Naje
authors.affiliation: Department of Engineering, UTM Razak School of Engineering and Advanced Technology, Universiti Teknologi Malaysia, Jalan Semarak, 54100, Kuala Lumpur, Malaysia; Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment, Block C07, Level 2, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia. Electronic address: shreeshivadasan.kl@utm.my.
authors.forename: Shreeshivadasan
authors.initials: S
authors.lastname: Chelliapan
authors.affiliation: Department of Environmental Engineering and Green Technology, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, 54100, Kuala Lumpur, Malaysia.
authors.forename: Zuriati
authors.initials: Z
authors.lastname: Zakaria
authors.affiliation: Department of Engineering, UTM Razak School of Engineering and Advanced Technology, Universiti Teknologi Malaysia, Jalan Semarak, 54100, Kuala Lumpur, Malaysia.
authors.forename: Saad A
authors.initials: SA
authors.lastname: Abbas
mesh_terms: D000535:Aluminum / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D003362:Cost-Benefit Analysis; D004560:Electricity; D004564:Electrocoagulation / Q000379:methods*; D004566:Electrodes; D004867:Equipment Design; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D019800:Phenol / Q000302:isolation & purification; D013696:Temperature; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater
chemical_list: D000535:Aluminum; D007220:Industrial Waste; D019800:Phenol; D062065:Wastewater
keywords: Electrocoagulation; Electrode consumption; Rotated anode reactor; Textile wastewater