作　　者： ; ; ; ;

机构地区： 广西师范大学环境与资源学院资源与环境学系

出　　处： 《环境污染与防治》 2006年第7期496-498,共3页

摘　　要： 以结晶紫溶液模拟阳离子染料废水,研究了钢渣对染料的吸附性能及其影响因素。结果表明,在碱性条件下,钢渣对结晶紫不仅吸附速率快,而且吸附容量大。利用钢渣对染料的吸附特性和焦炭吸收微波产生高温的性能,提出了以钢渣/焦炭吸附—微波降解处理阳离子染料废水的新方法。该方法简单有效,成本低廉,具有良好的应用前景。 The adsorptive capacities of steel slag for crystal violet were measured under a wide variety of test conditions of pH （7-10）, slag particle size （40-200 mesh）, and initial crystal violet concentration （100-500 mg/L）. The results have demonstrated that steel slag is a good absorbent for the cationic dye, especially under a basic as its surface metal oxides becomes more negatively charged. Microwave irradiation （800 W） on 2 g of a slag and coke mixture （1 ： 1） elevated the temperature to 665℃ in one minutes. Almost all the adsorbed crystal violet was oxidized in two minutes of such heating; a small amount of coke was also oxidized at the high temperature. After 8 cycles of adsorption and regeneration, the slag-coke mixture was still effective for removing crystal violet. The steel slag-coke mixture adsorption, coupled with the microwave regeneration, is a simple and attractive process for treating cationic dye wastewater.

关 键 词： 钢渣 焦炭 吸附 微波降解 阳离子染料废水 结晶紫

领　　域： [环境科学与工程] [化学工程]