전기화학적인 방법에 의한 반응성 염료폐수의 처리 = Treatment of reactive dyes wastewater by electrochemical method

다국어 초록 (Multilingual Abstract)

Reactive dyes waste water, a toxic and refractory pollutant, was treated by an electrochemical method using Ti/IrO_2 as anode and Stainless Steel 316 as cathode. In this technique, sodium chloride as an electrolyte was added. A number of experiments were run in a batch system. Artificial samples (reactive blue 19, red 195, yellow 145) were used. Operation parameters, such as supporting electrolyte concentration, current density, pH and sample concentration have been investigated for their influences on COD and color removal efficiencies during electrolysis, After 5 and 90 minites of eletrolysis, color was reduced by 51.5% and 98.9% respectively, under the condition of current density 10A/d㎡, NaCl concentration 12mg/l and pH 3, 62.9% of COD_Cr was removed after electrolysis for 90 minites. The optimum condition of color removal and COD reduction in this work was found to be the following : pH 3, sodium chloride concentration 20g/l, current density 10 A/d㎡. As a result, we confirmed to be effective to color removal and reduction of refractory organic material.