活性炭吸附硝基苯酚同分异构体的研究  

The Adsorption Performance of Activated Carbon for Nitro Phenol Isomers

作　　者：陆永玉[1] 王晓艳[1] 周建斌[2] 潘蕊[1] 刘斌[1] 马叶[1] 

机构地区：[1]南京林业大学化学工程学院,江苏南京210037 [2]南京林业大学木材工业学院,江苏南京210037

出　　处：《林产化学与工业》2014年第2期113-118,共6页Chemistry and Industry of Forest Products

基　　金：林业公益性行业科研专项(201304611);国家973项目(2010CB732205);'十二五'国家科技支撑计划资助项目(2012BAD30BOO)

摘　　要：研究吸附条件对活性炭吸附硝基苯酚同分异构体的影响。结果表明:25℃,中性条件下,活性炭对邻硝基苯酚、间硝基苯酚和对硝基苯酚最高吸附量分别为676.03、475.17和449.56 mg/g。邻硝基苯酚的吸附行为与另两种异构体存在较大差异。升高温度利于活性炭对邻硝基苯酚的吸附。酸性条件下,吸附量高低顺序为邻硝基苯酚>对硝基苯酚>间硝基苯酚;pH值增大利于活性炭对间硝基苯酚的吸附。硝基苯酚的吸附等温线基本符合Langmuir方程,为单分子层吸附。Adsorption performance of activated carbon for nitro phenol isomers was investigated. The results showed that the highest adsorption capacity of o-nitrophenol ,m-nitrophenol, p-nitrophenol on activated carbon are 676.03,475.17 and 449.56 mg/g under the temperature of 25 ℃ and neutral conditions, respectively. The adsorption behavior of o-nitrophenol on activated carbon is different from the other two isomers. With the increasing of temperature, adsorption of o-nitrophenol in activated carbon was also increased. Under the acidic conditions, the adsorption amount of nitro phenol isomers was in the order of oonitrophenol 〉 p-nitrophenol 〉 m-nitrophenol. Adsorption of m-nitrophenol can be improved in activated carbon by increasing the pH value. The adsorption isotherms of nitro phenol strictly accord with Langmuir equation, which is a single molecule layer absorption.

关 键 词：活性炭 硝基苯酚 同分异构体 吸附 

分 类 号：TQ35[化学工程] TQ424.19