title: Effect of operational parameters on heavy metal removal by electrocoagulation.
abstract: In the present paper, the performance of electrocoagulation (EC) for the treatability of mixed metals (chromium (Cr), copper (Cu), lead (Pb), nickel (Ni), and zinc (Zn)) from metal plating industrial wastewater (EPW) has been investigated. The study mainly focused on the affecting parameters of EC process, such as electrode material, initial pH, distance between electrodes, electrode size, and applied voltage. The pH 8 is observed to be the best for metal removal. Fe-Fe electrode pair with 1-cm inter-electrode distance and electrode surface area of 40 cm(2) at an applied voltage of 8 V is observed to more efficient in the metal removal. Experiments have shown that the maximum removal percentage of the metals like Cr, Ni, Zn, Cu, and Pb are reported to be 96.2, 96.4, 99.9, 98, and 99.5 %, respectively, at a reaction time of 30 min. Under optimum conditions, the energy consumption is observed to be 51.40 kWh/m(3). The method is observed to be very effective in the removal of metals from electroplating effluent.
authors: Center for Environment, Institute of Science and Technology, Jawaharlal Nehru Technological University, Hyderabad, Kukatpally, 500085, India.
authors: D
authors: D
authors: Bhagawan
authors: Saritha
authors: S
authors: Poodari
authors: Tulasiram
authors: T
authors: Pothuraju
authors: D
authors: D
authors: Srinivasulu
authors: G
authors: G
authors: Shankaraiah
authors: M
authors: M
authors: Yamuna Rani
authors: V
authors: V
authors: Himabindu
authors: S
authors: S
authors: Vidyavathi
mesh_terms: D002857:Chromium / Q000302:isolation & purification; D003300:Copper / Q000302:isolation & purification; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods*; D004595:Electroplating; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000517:prevention & control*; D007854:Lead / Q000302:isolation & purification; D019216:Metals, Heavy / Q000302:isolation & purification*; D009532:Nickel / Q000302:isolation & purification; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*; D015032:Zinc / Q000302:isolation & purification
chemical_list: D002857:Chromium; D003300:Copper; D007220:Industrial Waste; D007854:Lead; D019216:Metals, Heavy; D009532:Nickel; D062065:Wastewater; D015032:Zinc