고체 고분자 전해질(SPE)을 이용한 전기분해 공정에서 Rhodamine B 분해

• 영문명: Degradation of Rhodamine B in Water using Solid Polymer Electrolyte (SPE) in the Electrolysis Process
• 발행기관: 한국환경보건학회
• 저자명: 박영식(Young-Seek Park)
• 간행물 정보: 『한국환경보건학회지』제40권 제2호, 137~146쪽, 전체 10쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2014.04.30

영문 초록

Objectives: Feasibility of electrochemical oxidation of the aqueous non-biodegradable wastewater such as cationic dye Rhodamine B(RhB) has been investigated in an electrochemical reactor with solid polymer electrolyte(SPE). Methods: Nafion 117 cationic exchange membrane as SPE has been used. Anode/Nafion/cathode sandwiches were constructed by sandwiching Nafion between two dimensionally stable anodes(JP202 electrode). Experiments were conducted to examine the effects of applied current(0.5~2.0 A), supporting electrolyte type (0.2 N NaCl, Na 2 SO 4 , and 1.0 g/L NaCl), initial RhB concentration(2.5~30.0 mg/L) on RhB and COD degradation and UV 254 absorbance. Results: Experimental results showed that an increase of applied current in electrolysis reaction with solid polymer electrolyte has resulted in the increase of RhB and UV 254 degradation. Performance for RhB degradation by electrolyte type was best with NaCl 0.2 N followed by SPE, and Na 2 SO 4 . However, the decrease of UV 254 absorbance of RhB was different from RhB degradation: SPE > NaCl 0.2 N > Na 2 SO 4 . RhB and UV 254 absorbance decreased linearly with time regardless of the initial concentration. The initial RhB and COD degradation in electrolysis reaction using SPE showed a pseudo-first order kinetics and rate constants were 0.0617(R 2 = 0.9843) and 0.0216(R 2 = 0.9776), respectively. Conclusions: Degradation of RhB in the electrochemical reactor with SPE can be achieved applying electrochemical oxidation. Supporting electrolyte has no positive effect on the final UV 254 absorbance and COD degradation. Mineralization of COD may take a relatively longer time than that of the RhB degradation.

목차

I. 서 론

II. 재료 및 방법

III. 결 과

IV. 고 찰

V. 결 론

키워드

COD, Dye Electrolysis Solid polymer electrolyte UV 254