AI Article Synopsis
- The study analyzed the continuous electrochemical treatment of industrial textile wastewater in a tubular reactor, focusing on the effects of residence time on treatment efficiency.
- The synthetic wastewater mimicked real processes from cotton and viscose dyeing, allowing for realistic testing conditions, including temperature, electrolyte concentration, and COD levels.
- Results indicated that a residence time of 3 hours achieved optimal removal rates of 53.5% for COD and 99.3% for color, though this required a significant energy input of 193.1 kWh/kg COD.
Article Abstract
The continuous electrochemical treatment of industrial textile wastewater in a tubular reactor was investigated. The synthetic wastewater was based on the real process information of pretreatment and dyeing stages of the industrial mercerized and non-mercerized cotton and viscon production. The effects of residence time on chemical oxygen demand (COD), color and turbidity removals and pH change were studied under response surface optimized conditions of 30 degrees C, 25 g/L electrolyte concentration and 3505 mg/L COD feed concentration with 123.97 mA/cm(2) current density. Increasing residence time resulted in steady profiles of COD and color removals with higher treatment performances. The best column performance was realized at 3h of residence time as 53.5% and 99.3% for COD and color removals, respectively, at the expense of 193.1 kWh/kg COD with a mass transfer coefficient of 9.47 x 10(-6) m/s.
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| http://dx.doi.org/10.1016/j.jhazmat.2009.05.032 | DOI Listing |
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