麦草碱木素基活性炭对苯酚吸附的研究  

Adsorption of Phenol by Wheat Straw Alkaline Lignin-based Activated Carbon

作　　者：魏冬雪[1] 金小娟[2] 

机构地区：[1]北京林业大学材料学院,北京100083 [2]山东轻工业学院制浆造纸工程省部共建教育部重点实验室,山东济南250353

出　　处：《中国造纸学报》2013年第4期46-50,共5页Transactions of China Pulp and Paper

基　　金：山东轻工业学院制浆造纸国家重点实验室开放基金资助(0807)

摘　　要：在无水碳酸钾与麦草碱木素质量比4∶1、活化温度800℃、活化时间1 h的条件下制备麦草碱木素基活性炭,探讨了麦草碱木素基活性炭对苯酚的吸附作用。结果表明,麦草碱木素基活性炭的得率为17.9%,碘吸附值为827.5 mg/g;用麦草碱木素基活性炭处理100 mL苯酚溶液时,当苯酚初始质量浓度250 mg/L、麦草碱木素基活性炭投加量0.1 g、吸附温度30℃、苯酚溶液pH值约7时,麦草碱木素基活性炭对苯酚的吸附于80 min时达到平衡。麦草碱木素基活性炭对苯酚的吸附行为可用Langmuir等温式描述。Wheat straw alkaline lignin-based activated carbon was prepared under the following experimental conditions：ratio of anhydrous K2CO3 and wheat straw alkaline was 4∶ 1,activating temperature was 800℃,activating time was 1 h.The yield of the activated carbon was 17.9％,the adsorption number of iodine reached 827.5 mg/g.When 100 mL phenol solution with initial concentration of phenol 250 mg/L was treated by the activated carbon,dosage of the activated carbon was 0.1 g,and the temperature was 30℃,the solution pH value was about 7,the time for adsorption equilibrium was 80 min.The adsorption behavior of activated carbon on phenol could be described by Langmuir isotherm equation.

关 键 词：碳酸钾 麦草碱木素 活性炭 吸附 苯酚 

分 类 号：TQ424.1[化学工程] X793[环境科学与工程—环境工程]