竹炭对水溶液中苯酚的吸附作用

Adsorption of Phenol in Aqueous Solution with Bamboo Charcoal

以高温下炭化的竹炭为原料,探讨了接触时间、起始浓度、温度等因素对竹炭吸附苯酚的影响。结果表明,随着温度的升高,竹炭对苯酚的吸附量呈现下降的趋势;随着苯酚起始浓度的增加,竹炭对苯酚的吸附量呈现不断上升的趋势,而吸附率呈现下降趋势;通过准一级和准二级速率方程对其吸附过程的动力学进行拟合,得知竹炭对苯酚的吸附符合准二级速率方程。

Taking the carbonization bamboo charcoal in high temperature as the raw material, the effects of contact time,initial phenol concentration and temperature on removal of phenol were examined. The results showed that as temperature went up, the adsorp- tion amount of phenol of the samples decreased;as initial phenol concentration increased ,the adsorption of phenol increased, but the removal efficiency of phonel decreased; the pseudo-first order and the pseudo-second order model was used to fit the adsorption process, the results showed that phenol adsorption were followed more closely the pseudo-second order model.