CAJ | 학술논문

通过Friedel-Crafts后交联反应分别制备了乙基纤维素、羟丙基纤维素修饰的超高交联吸附树脂(分别命名为ZT1和ZT2)，以Amberlite XAD-4树脂作参照，通过等温吸附实验和吸附动力学实验探讨了修饰后的树脂对水溶液中BIT的吸附性能和机理。结果表明：ZT1、ZT2修饰的树脂比Amberlite XAD-4树脂对水溶液中BIT具有更好的吸附效果，Langmuir和Freundlich方程均能较好拟合修饰树脂对BIT的吸附等温线。ZT1、ZT2修饰的树脂对BIT的吸附以熵推动的自发物理吸附过程为主，吸附过程放热，吸附均符合准一级动力学吸附过程，颗粒内扩散过程是该吸附过程的主要控制步骤。
통과Friedel-Crafts후교련반응분별제비료을기섬유소、간병기섬유소수식적초고교련흡부수지(분별명명위ZT1화ZT2)，이Amberlite XAD-4수지작삼조，통과등온흡부실험화흡부동역학실험탐토료수식후적수지대수용액중BIT적흡부성능화궤리。결과표명：ZT1、ZT2수식적수지비Amberlite XAD-4수지대수용액중BIT구유경호적흡부효과，Langmuir화Freundlich방정균능교호의합수식수지대BIT적흡부등온선。ZT1、ZT2수식적수지대BIT적흡부이적추동적자발물리흡부과정위주，흡부과정방열，흡부균부합준일급동역학흡부과정，과립내확산과정시해흡부과정적주요공제보취。
The resins modified with ethyl cellulose (named ZT1) or hydroxy propyl cellulose (named ZT2) during the post-crossing of chloromethyl low crosslinking macroporous polystyrene polymer were prepared and characterized by IR and BET. The adsorption performance of BIT onto ZT1 and ZT2 was studied through static and kinetic adsorption experiment with the commercial Amberlite XAD-4 as a contrast. The results showed that ZT1 and ZT2 resins had better adsorption capability to BIT than that of Amberlite XAD-4. Langmuir and Freundlich isotherm equation can fit the adsorption isotherm of BIT onto ZT1 and ZT2 perfectly. Thermodynamic parameters showed that the adsorption was a mainly spontaneous physical adsorption process driven by entropy and the process was exothermic. The adsorption dynamics of BIT on ZT1 and ZT2 were fitted into first-order dynamics equation, which shows intraparticle diffusion was the rate-determining step in the adsorption process.