title: Electrocoagulation for the treatment of textile industry effluent--a review.
abstract: Various techniques such as physical, chemical, biological, advanced oxidation and electrochemical are used for the treatment of industrial effluent. The commonly used conventional biological treatment processes are time consuming, need large operational area and are not effective for effluent containing toxic elements. Advanced oxidation techniques result in high treatment cost and are generally used to obtain high purity grade water. The chemical coagulation technique is slow and generates large amount of sludge. Electrocoagulation has recently attracted attention as a potential technique for treating industrial effluent due to its versatility and environmental compatibility. This technique uses direct current source between metal electrodes immersed in the effluent, which causes the dissolution of electrode plates into the effluent. The metal ions, at an appropriate pH, can form wide range of coagulated species and metal hydroxides that destabilize and aggregate particles or precipitate and adsorb the dissolved contaminants. Therefore, the objective of the present manuscript is to review the potential of electrocoagulation for the treatment of industrial effluents, mainly removal of dyes from textile effluent.
authors.affiliation: Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
authors.forename: V
authors.initials: V
authors.lastname: Khandegar
authors.forename: Anil K
authors.initials: AK
authors.lastname: Saroha
mesh_terms: D004396:Coloring Agents / Q000302:isolation & purification; D004564:Electrocoagulation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D008670:Metals; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D004396:Coloring Agents; D007220:Industrial Waste; D008670:Metals
keywords: AC; BOD; COD; DC; Dye removal; Efficiency; Electrocoagulation; F; Faraday's constant (96,500 C/mol); Operating parameter; SS; TDS; TFS; TOC; TSS; TVS; Textile effluent; alternating current (amp); biochemical oxygen demand (mg/L); chemical oxygen demand (mg/L); direct current (amp); parts per million; ppm; suspended solids (mg/L); total dissolved solids (mg/L); total fixed solids (mg/L); total organic carbon (mg/L); total suspended solids (mg/L); total volatile solids (mg/L)