铱钽涂层形稳阳极电解含乙腈的模拟废水  

Degradation of Acetonitrile Wastewater by Electrode Containing Iridium and Tantalum Elements

作　　者：段婉君 柴涛[1] 冯一伟 周英勃[1] 

机构地区：[1]中北大学化工与环境学院,太原030051

出　　处：《科学技术与工程》2016年第27期311-315,共5页Science Technology and Engineering

摘　　要：乙腈是一种脂肪族的急性剧毒有机污染物,不仅危害大而且来源广泛,众多行业产生的污水中都包含乙腈。为了找到一种适合的DSA阳极来高效率地降解乙腈,对四种不同材料的阳极(钌铱钛(Ti/TiO_2-IrO_2-RuO_2)、钌铱钛锡(Ti/TiO_2-IrO_2-RuO_2-SnO_2)、铱钽钛(Ti/TiO_2-Ta_2O_5-IrO_2)和铱钽钛锡(Ti/TiO_2-Ta_2O_5-IrO_2-SnO_2))分别降解乙腈模拟废水的产物进行了研究,通过国标法测定不同时间段降解产物的COD值,比较四种阳极对乙腈模拟废水降解效果的优劣,结果显示在降解2.5 h时涂层含有铱钽钛元素的电极对乙腈的降解效果最佳。并以此电极为代表优化降解乙腈模拟废水条件,得到最佳条件为:p H为6.60,浓度为每500 m L水中含1.32 m L乙腈,电压为4.10 V,在此条件下降解率可达到69.0%。Acetonitrile is a kind of aromatic organic pollutants.Not only harmful but also a wide range of sources.The drainage of many industries are contained acetonitrile.For the degradation of the high efficiency of acetonitrile wastewater,degradation of simulated wastewater with four kinds of anode（（Ti / TiO2-IrO2-RuO2）,（Ti/TiO2-IrO2-RuO2-SnO2）,（Ti/TiO2-Ta2O5-IrO2） and（Ti/TiO2-Ta2O5-IrO2-SnO2）） and degradation effect was determined by national standard.The results showed that the degradation effect of Ti / TiO2-Ta2O5-IrO2 anode was good after 2.5 hours.On this electrode,the optimal conditions are found.The optimum reaction conditions with the degradation rate of 69.0% were determined to be p H value of 6.60,acetonitrile dosage of 1.32 mL,Voltage is 4.10 V.

关 键 词：乙腈废水 DSA电极 响应面 

分 类 号：X703.1[环境科学与工程—环境工程]