无患子活性炭的制备以及对苯酚吸附的研究  

Preparation of Activated Carbon from Sapindus mukorossi Residue and Its Adsorption Capacity to Phenol

作　　者：王勇[1] 刘金玲[1] 伍毓强[2] 黄秀萍[3] 陈登龙[2,3] 

机构地区：[1]福建师范大学化学与化工学院,福建福州350007 [2]福建师范大学环境科学与工程学院,福建福州350007 [3]福建师范大学泉港石化研究院,福建泉州362800

出　　处：《安徽农业科学》2014年第25期8724-8727,共4页Journal of Anhui Agricultural Sciences

基　　金：2010年林业局林业公益性行业科研专项(201104100);2010年福建省区域科技重大项目(2010N3011);2013年福建省教育厅JK类科技计划项目(JK2013011)

摘　　要：[目的]研究无患子活性炭制备的最佳工艺及其对苯酚的吸附。[方法]以H3PO4为活化剂制备无患子残渣活性炭,通过正交试验对制备工艺进行优化,探讨浸渍比、活化温度、活化时间对活性炭亚甲基蓝和碘吸附值的影响。利用N2吸脱附试验、SEM,对活性炭的结构与性能进行表征。选取了投炭量、苯酚溶液pH、苯酚初始浓度、吸附温度为单因素,探讨其对苯酚吸附的影响。[结果]浸渍比为1∶1、活化温度为500℃、活化时间为60 min时,制备的活性炭对亚基蓝的吸附值为82 mg/g、碘吸附值为773 mg/g、BET比表面为738m2/g、总孔容达0.669 2 cm3/g、平均孔径为3.625 7 nm。活性炭在中性条件下对苯酚吸附效果最佳;低温有利于吸附,但温度的影响不大。[结论]所制备的活性炭具有良好的苯酚吸附效果。[Objective] The research aimed to study the best preparation process of activated carbon with S.mukorossi residue and its adsorption capacity to phenol.[Method] The activated carbon was prepared with S.mukorossi residue by using H3PO4 as activator.The preparation process was optimized by orthogonal experiment,and the influences of the mass ratio of acid to material,activation temperature and time on adsorption values of methylene blue and iodine by activated carbon were discussed.The structure and property of activated carbon were characterized by N2 adsorption-desorption experiment and SEM.Selecting activated carbon quantity,adsorption temperature,initial concentration and pH of phenol as single factors,their influences on phenol adsorption were discussed.[Result] The adsorption values of methylene blue and iodine by the activated carbon could reach 82 and 773 mg/g respectively at an impregnation ratio of 1 ∶ 1,an activation temperature of 500 ℃ and an activation time of 60 min.Meanwhile,the prepared activated carbon＇ s BET specific surface area was 738 m2/g; total pore volume was 0.669 2 cm3/g; average pore size was 3.625 7 nm.Under the neutral condition,adsorption effect of the activated carbon on phenol was the best.Low temperature was good for adsorption,but temperature had limited effects on adsorption.[Conclusion] The prepared activated carbon with S.mukorossi residue showed good results on adsorption capacity to phenol.

关 键 词：无患子 活性炭 苯酚 吸附 

分 类 号：S181.3[农业科学—农业基础科学]