柑橘皮渣生物吸附剂对Ni^(2+)的吸附特性  

Adsorption Properties of Orange Peel Adsorbent for Ni^(2+)

作　　者：赵清华[1] 全学军[1] 谭怀琴[1] 桑雪梅[1] 

机构地区：[1]重庆理工大学化学与生物工程学院,重庆400050

出　　处：《重庆工学院学报（自然科学版）》2009年第5期50-54,共5页Journal of Chongqing Institute of Technology

基　　金：重庆市教委科学技术研究项目(KJ080617)

摘　　要：将新鲜柑桔皮渣分别经微波和气流干燥,制备了一系列柑桔皮渣生物吸附剂.将吸附剂用于吸附含镍废水,研究干燥方式对吸附剂性能的影响.结果表明:各吸附剂的吸附动力学符合二级动力学模型,气流干燥吸附剂对N i2+的二级动力学常数比微波干燥吸附剂的大.各吸附剂对N i2+的等温吸附曲线均能用Langmu ir和Freund lich等温吸附模型描述,采用微波干燥可增大饱和吸附容量,且微波强度越大,饱和吸附容量越大.Different adsorbents are obtained by drying fresh orange peel with microwave or air flow, and the effect of drying on Ni2 ＋ adsorption is studied. The result shows that the kinetic of Ni2 ＋ for orange peel adsorbents fit second order kinetic model, and the second kinetic constants of microwave dried adsorbents are bigger than that of airflow dried adsorbents. The adsorption isotherm conforms to the Langmuir and Freundlich isotherm equations. The adsorption quantity of microwave dried adsorbents is bigger than that of airflow dried adsorbents and increases With microwave intensity.

关 键 词：柑橘皮渣 吸附剂 NI2+ 吸附特性 

分 类 号：X703[环境科学与工程—环境工程] X703.1