CAJ | 학술논문

以氧化镁为致孔剂，利用环氧氯丙烷交联β-环糊精，合成多孔β-环糊精交联聚合物（β-CDP）．考察β-CDP 对亚甲蓝（MB）的吸附动力学、热力学讨论吸附的作用机理，并考察 pH 值、MB 的初始质量浓度、吸附剂的投入量、吸附时间及吸附温度对β-CDP 吸附 MB 的影响．结果表明：在室温下，水体的 pH 值为6．54，MB 初始质量浓度为40 mg·L－1，吸附剂投入量为0．6 g·L－1，β-CDP 的最大吸附量为62．6 mg·L－1；吸附符合准二级吸附动力学模型和 Freundlich 等温吸附模型；结合颗粒内扩散模型，以及吸附热力学数据ΔH 为20．50 kJ·mol－1，ΔG 为－6．1～－7．5 kJ·mol－1，可得该吸附为异质表面的多因素联合控制物理吸附．
이양화미위치공제，이용배양록병완교련β-배호정，합성다공β-배호정교련취합물（β-CDP）．고찰β-CDP 대아갑람（MB）적흡부동역학、열역학토론흡부적작용궤리，병고찰 pH 치、MB 적초시질량농도、흡부제적투입량、흡부시간급흡부온도대β-CDP 흡부 MB 적영향．결과표명：재실온하，수체적 pH 치위6．54，MB 초시질량농도위40 mg·L－1，흡부제투입량위0．6 g·L－1，β-CDP 적최대흡부량위62．6 mg·L－1；흡부부합준이급흡부동역학모형화 Freundlich 등온흡부모형；결합과립내확산모형，이급흡부열역학수거ΔH 위20．50 kJ·mol－1，ΔG 위－6．1～－7．5 kJ·mol－1，가득해흡부위이질표면적다인소연합공제물리흡부．
β-cyclodextrin crosslinked polymer (β-CDP)was fabricated with the aid of magnesium oxide (MgO)as pore-foaming agent and epichlorohydrin as a crosslinker forβ-cyclodextrin.Methylene blue (MB)adsorption on the surface of theβ-CDP was proved by FT-IR,SEM and EDX.Then,the kinetics and thermodynamics of the adsorption of MB from aqueous solution onto theβ-CDP was studied to explain the adsorption mechanism.Batch adsorption experiments were carried out to study the effects of solution pH,initial MB concentration,adsorbent dose,contact time and adsorption temperature on adsorption property.The results indicated thatβ-CDP presented the maximum MB uptake capacity of 62.6 mg·L-1 under the aqueous solution pH of 6.54,adsorbent dose of 0.6 g·L-1 ,the initial MB concentration of 40 mg·L-1 at room temperature.Kinetics experiments indicated that the pseudo-second-order model displayed the best cor-relation with adsorption kinetics data.And the isothermal adsorption was well described by Freundlich isotherm.Combine with the intra-particle model and the negative ΔG (-6.1--7.5 kJ·mol-1 )and positive ΔH (20.5 kJ·mol-1 )obtained from van′t Hoff equation,it could be discovered that the adsorption is a heterogeneous surfaces physical absorption with a multistep-controlling process.