磷酸法活化银杏叶活性炭对DBP的吸附性能研究  

ADSORPTION PERFORMANCE OF DBP USING BILOBA LEAF ACTIVATED CARBONS BY PHOSPHORIC ACID ACTIVATION METHOD

作　　者：余丹[1] 王郑[1] 张鹏伟[1] 许雁[1] 蔡孟哲[1] 

机构地区：[1]南京林业大学土木工程学院,江苏南京210037

出　　处：《能源环境保护》2012年第5期28-32,共5页Energy Environmental Protection

摘　　要：以银杏树叶为原料,使用磷酸活化法制备粉末活性炭,采用银杏叶粉末活性炭作为吸附剂,研究了其对DBP的吸附性能。研究考察了温度、吸附时间、pH对DBP吸附性能的影响,同时拟合了吸附等温线,探讨了热力学和动力学性质。结果表明温度、吸附时间、pH对吸附效果均有影响,吸附过程符合Langmuir吸附等温方程,吸附过程是自发的,二级动力学方程更好地描述吸附动力学规律。In this paper active carbon powder was derived from the biloba leaf using phos- phoric acid activation method.Biloba leaf powder of active carbon was selected as adsorbent, DBP as adsorbate.The adsorption efficiency by temperature, contact time, pH were investigated. The adsorption isotherms were linearized , and the thermodynamics and dynamics for the adsorption were discussed. The results showed that adsorption strongly depended on temperature,contact time and pH. Adsorption isotherm equation described in terms of the Langmuir isotherm, adsorption process was spontaneous.The pseudo-second-order model was better to describe the adsorption dynamics rule .

关 键 词：磷酸法活化银杏叶活性炭 DBP 吸附性能 研究 

分 类 号：X703[环境科学与工程—环境工程]