摘要
采用静态法,研究了Mn2+在烟草上的吸附及其解吸附性能,探讨了pH值对吸附的影响,测定了在不同温度、浓度下的吸附速率曲线和吸附等温线。结果表明,烟草对Mn2+的吸附速率快,吸附热效应高,pH值对吸附有较大的影响;吸附动力学过程可由lagergren一级动力学模式较好地描述;吸附等温模型符合Langmuir和Temkin等温吸附机理,在低浓度范围内吸附量与平衡浓度呈直线关系。
The adsorptive and desorptive properties Mn(Ⅱ) ion on tobacco were studied,and the effect of pH on adsorption was discovered by using static method.Adsorption rate curves and adsorption isotherms on different temperature and concentration were determined.The results show that adsorbing rate of tobacco for Mn(Ⅱ) ion is fast,and heat effect of adsorption is high,meanwhile,pH has an appreciable influence on adsorption.The process of dynamics for the adsorption can be simulated by Lagergren first order kinetic model;adsorption isotherm is in accordance with Langmuir and temkin mechanisms of isothermal adsorption,and under the low concentration,the relationship between the adsorbing capacity and equilbrium concentration is linear.
出处
《南昌大学学报（理科版）》
CAS
北大核心
2003年第1期68-72,共5页
Journal of Nanchang University(Natural Science)
基金
南昌大学211工程资助项目(103-2)
