title: Treatment of colored and real industrial effluents through electrocoagulation using solar energy.
abstract: This study was undertaken to investigate the removal of Acid Orange 2 (sodium 4-[(2E)-2-(2-oxonaphthalen-1-ylidene) hydrazinyl] benzenesulfonate) and Reactive Blue 19 (2-Anthracenesulfonicacid,1-amino-9,10-dihydro-9,10-dioxo-4-[[3-[[2-(sulfooxy) ethyl] sulfonyl] phenyl] amino]-,sodium salt (1:2)) from synthesized and real effluents through electrocoagulation using solar cells for the purpose of improving economic efficiency of the process. The impact of a number of key operating parameters was explored including current density, anode type, temperature, pH, and electrolyte concentration. The current density of 45 Am(-2) proved to be the optimum level for both dyes. The same optimum alternatives were found for the other parameters in both cases: iron anode, a temperature level of 25°C, a pH of 7, and an electrolyte concentration of 15 mg L(-1). Both effluent samples were subjected to COD (chemical oxygen demand) and TOC (total organic carbon) tests. Cost analysis was performed for the treatment process.
authors: Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran.
authors: Azam
authors: A
authors: Pirkarami
authors: Mohammad Ebrahim
authors: ME
authors: Olya
authors: Sahar
authors: S
authors: Tabibian
mesh_terms: D000880:Anthraquinones / Q000737:chemistry; D001391:Azo Compounds / Q000737:chemistry; D057919:Biological Oxygen Demand Analysis; D004564:Electrocoagulation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000032:analysis*; D009281:Naphthalenes / Q000737:chemistry; D012993:Solar Energy; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: C456587:Acid Orange II; D000880:Anthraquinones; D001391:Azo Compounds; D007220:Industrial Waste; D009281:Naphthalenes; C024758:Remazol Brilliant Blue R