【摘要】 通过静态吸附实验,研究了大孔交联聚(对乙烯基苄基丁二酰亚胺)树脂(简称丁二酰亚胺树脂)对苯酚和水杨酸等酚酸类物质的吸附热力学及动力学特性.结果表明,丁二酰亚胺树脂对苯酚和水杨酸具有良好的吸附性能,在研究的浓度范围内,吸附平衡数据符合Langmuir和Freundlich等温吸附方程,相关系数R2都在0.99左右,吸附为自发、放热的物理吸附过程.吸附速率符合Lagergren准一级动力学方程,吸附速率随着温度的升高而增大,吸附表观活化自由能都小于40kJ/mol.更多还原

【Abstract】 Studies on the adsorption thermodynamics and kinetics of phenol and salicylic acid by poly(p-vinylbenzyl succinimide)resin(which can be abbreviated to succinimide resin)were carried out through static experiments.A batch sorption experiments showed that succinimide resin had high sorption capacities for both phenolic acids.Equilibrium adsorption data fitted to both Langmuir and Freundlich isotherms equation with the coefficients about 0.99 in the studied concentration range.The adsorptions were all spontaneous exothermic processes of physical characters.A Lagergren pseudo-first order rate equation was suitable to the adsorption process and the adsorption rate constants decreasing with the temperature,the apparent activation energies were all less than 40 kJ/mol.更多还原