| 壳聚糖-铝氧化物复合材料对Cd2+的吸附动力学及热力学 |
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| 引用本文： | 马志广,刘盼,刘素文,刘晓霁,邸娜.壳聚糖-铝氧化物复合材料对Cd2+的吸附动力学及热力学[J].河北大学学报(自然科学版),2011,31(4):380-384. |
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| 作者姓名： | 马志广 刘盼 刘素文 刘晓霁 邸娜 |
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| 作者单位： | 河北大学化学与环境科学学院,河北保定,071002 |
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| 基金项目： | 河北省科技厅指导性计划项目，河北大学博士基金资助项目 |
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| 摘 要： | 对壳聚糖-铝氧化物复合材料吸附Cd2+离子的动力学和热力学进行了研究.在实验条件下,动力学研究表明该吸附符合伪二级动力学方程,吸附表现活化能Eα =46.11 kJ/mol；热力学研究表明,此吸附过程符合Langmuir等温方程,焓变△Hθ=11.15 kJ/mol,熵变△Sθ=80.11 J/(mol.K),吸附吉布...
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| 关 键 词： | 壳聚糖 复合材料 吸附 动力学 热力学 |
Kinetics and Thermodynamic Studies on the Adsorption of Cd2+ Onto Chitosan-aluminium Oxide Composite Material |
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| MA Zhi-guang,LIU Pan,LIU Su-wen,LIU Xiao-ji,DI Na.Kinetics and Thermodynamic Studies on the Adsorption of Cd2+ Onto Chitosan-aluminium Oxide Composite Material[J].Journal of Hebei University (Natural Science Edition),2011,31(4):380-384. |
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| Authors: | MA Zhi-guang LIU Pan LIU Su-wen LIU Xiao-ji DI Na |
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| Institution: | (College of Chemistry and Environmental Science,Hebei University,Baoding 071002,China) |
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| Abstract: | Kinetics and thermodynamic on the adsorption of Cd2+ onto chitosan-aluminium oxide composite material was studied.Kinetic studies indicated that the adsorption of Cd2+ onto chitosan-aluminium oxide composite material was in line with pseudo-second-order equation and the apparent adsorption activation energy(Ea) was 46.11 kJ/mol.Thermodynamic studies indicated that the adsorption of Cd2+ onto chitosan-aluminium oxide composite material conformed to Langmuir adsorption equation.Enthalpy of adsorption(ΔHθ) was 11.15 kJ/mol and entropy of adsorption(ΔSθ) was 80.11 J/(mol·K).Gibbs free energy(ΔGθ) decreased with temperature increasing. |
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| Keywords: | chitosan composite material adsorption kinetics thermodynamics |
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