CAJ | 학술논문

目前在电化学氧化处理法降解苯酚废水的研究过程中，研究者多将重心放在活性电极的探索及制备上，而对于反应器的开发鲜有报道。就这一问题，本文研究了新型微流控反应器中苯酚的电化学降解效果。电化学氧化实验在装有Ti/SnO2-Sb2O5阳极的微型流通池中操作进行，实验对循环体系的体积流率ΦV、电极间距h的影响进行了考察。结果表明，当流通电解槽中的阴阳极间距采用微米级尺寸时，苯酚的阳极氧化反应取得了较快的氧化速度。在i=20 mA/cm2、ΦV=0.54 mL/min的电解条件下，电解2～3h苯酚去除率即可达到90%以上，相同流速下电极间距 h 越小降解速率越快。且由数据回归得到了苯酚的一系列随 h 的减小而增大的准一级反应的反应速率常数。这一结论表明微流控电解槽内的苯酚降解过程主要传质控制过程。
목전재전화학양화처리법강해분분폐수적연구과정중，연구자다장중심방재활성전겁적탐색급제비상，이대우반응기적개발선유보도。취저일문제，본문연구료신형미류공반응기중분분적전화학강해효과。전화학양화실험재장유Ti/SnO2-Sb2O5양겁적미형류통지중조작진행，실험대순배체계적체적류솔ΦV、전겁간거h적영향진행료고찰。결과표명，당류통전해조중적음양겁간거채용미미급척촌시，분분적양겁양화반응취득료교쾌적양화속도。재i=20 mA/cm2、ΦV=0.54 mL/min적전해조건하，전해2～3h분분거제솔즉가체도90%이상，상동류속하전겁간거 h 월소강해속솔월쾌。차유수거회귀득도료분분적일계렬수 h 적감소이증대적준일급반응적반응속솔상수。저일결론표명미류공전해조내적분분강해과정주요전질공제과정。
At present,most researchers focus on the exploration and preparation of the active electrode in the study of degradation of phenol. The development of new type of reactor has been rarely reported. A microfluidic reactor was used to determine the effects of the structure on the degradation of phenol. The electrochemical oxidation of phenol was performed in a micro flow cell equipped with a Ti/SnO2-Sb2O5 anode,and the effects of volume flow rate,inter-electrode gap were investigated. The results demonstrated that a flow cell with a micro-matric distance between cathode and anode can be used to perform the electrochemical treatment of water contaminated by phenol with high removal. A high removal of phenol up to 90% was achieved under the suitable experimental conditions in 2—3h, and the pseudo-first order rate constant of phenol removal was determined from the model.