CAJ | 학술논문

测定了高吸水树脂在NaCl、KCl、MgCl2、CaCl2溶液中吸液率和吸附盐离子率,研究高吸水树脂对NaCl、KCl、MgCl2、CaCl2的吸附热力学和吸附动力学。结果表明,高吸水树脂的吸液率和吸附盐离子率与盐溶液中阳离子的价态有关,对二价阳离子的吸附能力远小于一价阳离子,吸附Na＋、K＋的平衡常数b和速率常数ks远大于吸附Ca2＋、Mg2＋平衡常数b和速率常数ks,且温度越高平衡常数b和速率常数ks越大,NaCl、KCl、MgCl2和CaCl2的吸附热力学规律符合Langmuir方程,吸附动力学符合准二级动力学方程。
측정료고흡수수지재NaCl、KCl、MgCl2、CaCl2용액중흡액솔화흡부염리자솔,연구고흡수수지대NaCl、KCl、MgCl2、CaCl2적흡부열역학화흡부동역학。결과표명,고흡수수지적흡액솔화흡부염리자솔여염용액중양리자적개태유관,대이개양리자적흡부능력원소우일개양리자,흡부Na＋、K＋적평형상수b화속솔상수ks원대우흡부Ca2＋、Mg2＋평형상수b화속솔상수ks,차온도월고평형상수b화속솔상수ks월대,NaCl、KCl、MgCl2화CaCl2적흡부열역학규률부합Langmuir방정,흡부동역학부합준이급동역학방정。
The fluid and salt ions absorption rate of the super absorbent polymer (SAP)was determinated in NaCl,KCl,MgCl2 and CaCl2 solution,and the adsorption characteristics of SAP thermodynamics and kinetics of NaCl and CaCl2 were studied.The results shows that the salt ions absorption rate of SAP is related to the cat-ion of the solution,the bivalent cation absorption ability is far less than monovalent cations.The equilibrium constant b and speed constant ks of absorbing Na+ and K+ are much greater than that of absorbing Mg2 + and Ca2 + ,and the higher the temperature the greater the equilibrium constant b and speed constant ks .The adsorp-tion thermodynamics of NaCl,KCl,MgCl2 and CaCl2 is complied with the laws of Langmuir equation.The ad-sorption kinetics result illustrates it fits to the Pseudo-second order equation.