Electrocoagulation is an alternative technology for wastewater treatment and recovery of valuable chemicals from wastewater. It is an electrochemical technique whereby anodes (aluminum or iron) corrode to release active coagulants into solution. The generated metallic ions, i.e. Al3+ (aq) and Fe3+ (aq), will undergo further spontaneous reactions to produce corresponding hydroxides and/or polyhydroxide. These hydroxide/ polyhydroxide/ polydroxy metallic compounds have a strong affinity with dispersed/ dissolved molecules to cause coagulation/adsorption.
Citation: Chigozie UF, Joseph NT (2014) Removal of Orange-G, Vat Yellow, Erythrosine Dyes from Synthetic Wastewater by Electrocoagulation and Nanofiltration. J Adv Chem Eng 4:112. doi: 10.4172/2090-4568.1000112