CAJ | 학술논문

研究了以石墨电极作阳极、不锈钢丝刷为阴极、Na2SO4为电解质，采用不同电解电压（20 V、5 V）对模拟硝基苯（NB）废水进行电解。测量了不同电解时间溶液的紫外光谱，结果表明：20 V电压时，硝基苯被还原为苯胺（AN）；而5 V电压时，产物除苯胺外，可能还有马来酸、对氨基苯酚、对苯二酚等。对20 V电解电压的体系，采用双波长等吸收消除干扰法求解出不同电解时间混合体系中硝基苯和苯胺各自的含量；而对5 V的电解体系，采用萘乙二胺偶氮光度法来测定电解处理后废水中苯胺和硝基苯的含量。结果显示，随着电解电压的下降，除产物成分变化外，硝基苯转化率、最大转化率需要的时间也发生变化。
연구료이석묵전겁작양겁、불수강사쇄위음겁、Na2SO4위전해질，채용불동전해전압（20 V、5 V）대모의초기분（NB）폐수진행전해。측량료불동전해시간용액적자외광보，결과표명：20 V전압시，초기분피환원위분알（AN）；이5 V전압시，산물제분알외，가능환유마래산、대안기분분、대분이분등。대20 V전해전압적체계，채용쌍파장등흡수소제간우법구해출불동전해시간혼합체계중초기분화분알각자적함량；이대5 V적전해체계，채용내을이알우담광도법래측정전해처리후폐수중분알화초기분적함량。결과현시，수착전해전압적하강，제산물성분변화외，초기분전화솔、최대전화솔수요적시간야발생변화。
This paper investigates the reduction of nitrobenzene wastewater by electrolysis using graphite as an-ode, stainless steel brush as cathode, and Na2SO4 as electrolyte. The electrolytic voltage is set at 20 V and 5 V, respectively. The UV spectra of the result solution show that, when the voltage is 20 V, nitrobenzene is reduced to aniline, whereas when the voltage is 5 V, the products may have maleic acid, p-aminophenol and hydroqui-none. The concentration of nitrobenzene and aniline in the 20 V-electrolytic system is resolved from the UV spectra using dual-wavelength equal-absorbance UV method. However, the concentration in the 5 V-electrolytic system is determined by spectrophotometry with N-(1-Naphthyl)-ethylenediamine. It is shown that the conver-sion rate of nitrobenzene and the time needed for achieving the highest conversion rate, as well as the product, change with the decreasing of the electrolytic voltage.