环境工程学报2011，Vol.5Issue(12)：2768-2772,5.
甲基红在壳聚糖上吸附富集的研究
Research on adsorption enrichment of methyl red on chitosan
摘要
Abstract
The effects of pH, initial concentration, contact time and temperature on the adsorption enrichment of methyl red on chitosan were studied. The results showed that the pH of the medium was the major factor, and the optimal pH was 3.4. The behavior kinetics of the adsorption was well agreement with the Lagergren quasi-second order kinetics model, and the equilibrium absorption capacities decreased with increasing temperature. The activation energy （Ea） of biosorption was determined to be 7. 518 kJ/mol. The adsorption data showed a good fit with Fredulich isothermal equation. Thermodynamic parameters, △G0、△H0 and △S0 were calculated as -24.88 kJ/mol（303 K） , -22.15 kJ/mol and 8. 783 J/（mol· K）, respectively. The results indicated that the adsorption enrichment of methyl red in ehitosan was a spontaneous and exothermic process. The FTIR data showed that some functional groups mainly including --OH and --NH2 in chitosan were responsible for the ad- sorption enrichment of methyl red.关键词
甲基红/壳聚糖/吸附富集/动力学/热力学Key words
methyl red/chitosan/adsorption enrichment/kinetics/thermodynamics分类
资源环境引用本文复制引用
贾海红,徐祥华,马龙生,王学松,韩宝平..甲基红在壳聚糖上吸附富集的研究[J].环境工程学报,2011,5(12):2768-2772,5.基金项目
基金项目：江苏省高校自然科学基础研究基金 （）
淮海工学院自然科学基金 （）
江苏省高等学校大学生实践创新训练计划项目 （）
