电-多相催化氧化法处理桉木CTMP模拟废水  

An improved method for treating eucalyptus CTMP simulated effluent by electro-heteroge-neous catalysis oxidation

作　　者：袁号[1] 陈元彩[1] 詹怀宇[1] 付时雨[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广州510640

出　　处：《安全与环境学报》2009年第2期33-36,共4页Journal of Safety and Environment

基　　金：广州市科技局企业难题招标项目(GK040311)

摘　　要：提出-种基于复极性固定床反应器的有机废水处理新技术——电-多相催化氧化技术,用于桉木CTMP模拟废水的处理。以γ-Al_2O_3为载体,采用等体积浸渍法制备活性组分为氧化铜的催化剂,用于实验废水的处理。结果表明,在一定的操作条件下,E-HCR(电-多相催化体系)对鞣酸的降解效果明显好于传统的BPBC(复极性固定床电解槽)。在外加电压20V、支持电解质质量浓度1 000mg/L、pH值为5.35的条件下,降解初始质量浓度为100 mg/L的鞣酸,去除率大于90%。鞣酸降解前后的紫外和红外光谱分析表明:鞣酸经电-多相催化氧化处理后,分子中的酚羟基显著减少,分子中的大部分苯环结构开环降解成小分子物质。研究表明所研制的催化剂对鞣酸的电化学降解有很好的催化效果。The paper is inclined to introduce our improved method for treating eucalyptus CTMP simulated effluent by electro-heterogeneous catalysis oxidation by using a novel bipolar packed bed cell based on electro-heterogeneous catalysis oxidation. For our purpose, we have chosen tannic acid as the target compounds for the eucalyptus CTMP effluent. The catalyst agent with the active copper oxide components was prepared by an isovolume impregnation method as well as the carrier of γ-Al2O3. The experiment was of intermittent static nature, which is conducted in a self-made electrolytic cell with the graphite electrode. The concentration of the tannic acid can be determined with the ultraviolet spectrophotometer method. The experimental resuits of ours indicate that the reactor had positive effects on tannic acid degradation. And the electro-heterogeneous catalysis reactor can produce better effects than the conventional bipolar packed bed cells on the degradation of tannic acid with the certain operating condition. When a voltage of 20 V is applied, it would be possible to achieve a salinity of the electrolyte 1 000 mg/L and initial pH value 5.35, with its removal rate of over 90% . The UV and IR spectrogram of tannic acid by electro-heterogeneous catalysis demonstrated that most of the benzene ring could be destroyed, forming little molecule organic compounds with remarkable declining of the amount of the phenolic hydroxyl had obviously. Thus, our method proves that the prepared catalyst has had positive effects on the degradation of tannic acid by electrochemical disinfection.

关 键 词：环境工程 电-多相催化氧化 模拟废水 鞣酸 

分 类 号：X793[环境科学与工程—环境工程]