煤基活性焦的制备及其对含酚废水的吸附性能研究
Ion Exchange and Adsorption(2016)
Abstract
用延安子长煤在550℃热解后的半焦为原料,采用化学活化法制得活性焦,并对其进行了N2等温吸附、扫描电子显微镜(SEM)、X射线衍射(XRD)等表征.以苯酚和对硝基苯酚为目标吸附物,以吸附剂添加量、溶液浓度、吸附时间等为考察因素,研究了该活性焦对苯酚和对硝基苯酚模拟含酚废水的吸附性能,探索了该活性焦对苯酚、对硝基苯酚的吸附动力学行为.结果表明,该活性半焦对上述2种酚均具有良好的吸附性能,准二级动力学模型拟合的相关系数均在0.999以上,模型饱和吸附量与实验值相近,能很好地描述了2种酚类在该活性焦上的吸附行为.
MoreKey words
Activated semicoke,KOH activation,Phenol-contained simulated wastewater,Adsorption
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