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Electrochemical Treatment of Reactive Black 5 Textile Wastewater: Optimization, Kinetics, and Disposal Study
Author(s) -
Bansal Sachin,
Kushwaha Jai Prakash,
Sangal Vikas Kumar
Publication year - 2013
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143013x13807328848414
Subject(s) - chemical oxygen demand , response surface methodology , wastewater , central composite design , electrolysis , electrocoagulation , effluent , adsorption , factorial experiment , pulp and paper industry , electrochemistry , chemistry , waste management , environmental engineering , environmental science , electrode , chromatography , electrolyte , computer science , engineering , organic chemistry , machine learning
This research reports treatment of textile wastewater containing Reactive Black 5 (RB5) and other industrial constituents which are found in textile industry effluent, by the electrochemical treatment method using aluminum electrodes. Initial pH, current density ( J ), and electrolysis time ( t ) were selected as operational variables to observe the effects on chemical oxygen demand (COD) removal efficiency ( Y 1 ), dye removal efficiency ( Y 2 ), and specific energy consumed ( Y 3 ) (kWh/kg of COD removed). A response surface methodology (RSM) with full factorial central composite design (CCD) was used for designing and optimizing responses. To optimize the multiple responses, multi‐response optimization with a desirability function were utilized for maximizing Y 1 and Y 2 , and simultaneously minimizing Y 3 . To address issues of treated wastewater disposal, aluminum mass balance was performed. Electrocoagulation with subsequent adsorption, electrofloatation, and electro‐oxidation were found to be the mechanism for removal of the pollutants.