摘要
The sorption behavior and mechanism of D152 resin for Cu2+is investigated.D152 resin has a good adsorptivity for Cu2+in the HAc—NaAc medium at pH=4.73.The statically saturated sorption capacity is 309mg/g·(resin).Cu2+adsorbed on D152 resin can be eluted quantitatively by using 0.1-2.0mol/L hydrochloric acid as an eluant.The apparent rate constant and activation energy are k298=1.86×10-5 sec-1 and Ea=12.3kJ/mol.The sorption behavior of D152 resin for Cu2+ obeys the Freundlich isotherm.The sorption thermodynamic parameters of D152 resin for Cu2+are enthalpy change ΔH=14.6 kJ/mol,free energy change ΔG=-0.72kJ/mol,entropy change ΔS=51.4J/(.mol·K).respectively.
The sorption behavior and mechanism of D152 resin for Cu^2＋ is investigated. D152 resin has a good adsorptivity for Cu^2＋ in the HAc-NaAc medium at pH = 4.73. The statically saturated sorption capacity is 309mg/g·（resin）. Cu^2＋adsorbed on D152 resin can be eluted quantitatively by using 0.1-2. 0mol/L hydrochloric acid as an eluant. The apparent rate constant and activation energy are k298 = 1.86 × 10^-5 sec^-1 and Ea = 12.3kJ/mol. The sorption behavior of D152 resin for Cu^2＋ obeys the Freundlich isotheml. The sorption thermodynamic parameters of D152 resin for Cu^2＋ are enthalpy change AH = 14.6 kJ/mol, free energy change △G = 4）. 72k J/mol, entropy change △S = 51.4J/（ mol· K）. respectively.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2010年第1期105-107,共3页
Chemical Research and Application
基金
浙江省教育厅项目(2004055120031146)资助
关键词
D152树脂
吸附行为
活化能
铜
D152 resin
sorption behavior
activation energy
dysprosium
