竹炭对2-氯苯酚的吸附性能研究

STUDY ON THE ADSORPTION OF 2-CHLOROPHENOL BY BAMBOO-CARBON

研究了竹炭对水溶液中2-氯苯酚的吸附性能,探讨了竹炭用量、吸附时间、溶液pH值、初始浓度对其吸附性能的影响。结果表明:竹炭对2-氯苯酚具有较强的吸附能力;竹炭对2-氯苯酚的吸附在8h基本达到平衡;酸性条件有利于竹炭对2-氯苯酚的吸附;吸附容量随2-氯苯酚溶液浓度的升高而增加,吸附率随浓度的增加而下降,当水样中2-氯苯酚浓度低于50mg/L,投加量为3g/L时,竹炭吸附去除率可达90%以上,表明竹炭在低浓度氯酚废水处理中有较好的应用前景。

The sorption of bamboo-carbon to 2-chlorophenol in water solution was studied,and the effects of dosage of bamboo-carbon,adsorptive time,pH,the concentration of 2-chlorophenol on its sorption were discussed also.The results showed that the bamboo-carbon had a fairly strong capacity of adsorbing 2-chlorophenol.The adsorptive balance of 2-chlorophenol on the bamboo-carbon reached at 8 h treatment.The adsorption ratio was higher in acid solution than in neutral or alkaline solution.The adsorbability increased and the adsorption ratio decreased when the concentration of 2-chlorophenol increased.The adsorption ratio of bamboo-carbon was higher than 90% with the concentration of 3g/L when the concentration of 2-chlorophenol lower than 50mg/L,which indicated the bamboo-carbon could be applied in disposing 2-chlorophenol wastewater with low concentration of in the future.