竹炭对水溶液中苯酚的吸附性能研究  

STUDY ON ADSORPTION PERFORMANCE OF BAMBOO CHARCOAL FOR PHENOL IN AQUEOUS SOLUTION

作　　者：叶桂足[1] 陈清松[1] 赖寿莲[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《林产化学与工业》2005年第B10期139-142,共4页Chemistry and Industry of Forest Products

基　　金：福建省教育厅资助项目(JA03045)福建省产学研联合开发基金资助项目(无编号)

摘　　要：研究了竹炭颗粒对水溶液中苯酚的吸附性能,考察了竹炭用量、竹炭粒径、吸附时 间、苯酚溶液pH值和苯酚初始浓度等因素对吸附效果的影响,测定了苯酚吸附等温线。结果 表明:吸附率随着竹炭用量的增加而增大,随竹炭粒径的减小而增大;竹炭对苯酚的吸附速度 较快,粒径0．074 mm竹炭对苯酚的吸附主要发生在前30 min,2 h后吸附率增加缓慢;酸性条 件有利于竹炭对苯酚的吸附;苯酚初始浓度的增大,苯酚吸附率减小,但吸附量增大;苯酚在竹炭上的吸附等 温线符合Langmuir和Freundlich等温吸附方程。The performance of adsorption of bamboo charcoal for phenol in aqueous solution was studied. The influence of factors, namely： dosage of bamboo charcoal, particle size, adsorption time, pH value and initial concentration of phenol were investigated, and the adsorption isotherm of phenol was determined. The results show that the adsorbing rate is quite high, and increased with the increase of dosage of bamboo charcoal and the decrease of particle size, and the adsorption of 0.074 mm bamboo charcoal for phenol occurs mainly during the first 30 min, but the adsorption rate increases slowly after 2 h. Acidity is beneficial for adsorbing phenol. With the increase of initial concentration of phenol, the adsorption rate falls, while the adsorption capacity increases. The adsorption isotherm of phenol follows the isothermal adsorption equation of Langmuir and Freundlich.

关 键 词：竹炭 苯酚 吸附 

分 类 号：TQ424.19[化学工程]