矿渣对废水中铅、铬的吸附去除试验

Adsorption Removal of Lead and Chromium from Wastewater with Blast-Furnace Slag

进行了矿渣去除废水中铬、铅离子的试验研究,探讨了接触时间、金属离子初始浓度、废水酸度等因素对吸附性能的影响。结果表明,在较宽的pH范围内矿渣对铬、铅离子有较强的吸附能力,基本符合Freundlich吸附等温式,铅离子的吸附容量略大于三价铬离子。

Study on the removal of Cr3+ and Pb2+ from wastewater by blast-furnace slag has been conducted depending on contact time, initial ion concentration and pH of solution. The result showed that the slag has higher removal efficiency at a wide pH range for lead and chromium. The adsorption capacity of slag for Cr3+ and Pb2+ follows Freundlich isotherms in the range of the concentration studied. The adsorption capacity of Pb2+ was found to be greater than of Cr^(3+).