微胶囊处理含酚废水的研究  

Research of Disposing Sewage Containing Low Concentration Phenol by Microcapsules

作　　者：李明道 Li Mingdao(Zhoushan Municipal Development an d Reform Comission,Zhejiang,316021)

机构地区：[1]舟山市发展和改革委员会,浙江316021

出　　处：《当代化工研究》2023年第16期150-154,共5页Modern Chemical Research

摘　　要：本文通过溶剂挥发法制备了包裹正辛醇的微胶囊(下称“载醇微胶囊”)和空载微胶囊。经表征,载醇微胶囊平均粒径750μm,包裹率约25.82%。本文还测定了微胶囊处理低浓度苯酚溶液的吸附动力学曲线、25℃下的吸附等温线以及不同温度、pH下的平衡吸附量。分析结果表明,载醇微胶囊和空载微胶囊吸附苯酚的过程符合拟一级吸附动力学模型,即吸附速率与苯酚浓度呈线性正相关。Langmuir模型和Henry定律均能很好地拟合25℃下的吸附等温线,通过数据回归得到载醇微胶囊的最大吸附量为33.01mg·g^(-1)。载醇微胶囊吸附低浓度苯酚的平衡吸附量与温度和pH呈负相关,但pH值过低,反而会使平衡吸附量降低。In the paper,1-octanol-loaded microcapsules and unloaded microcapsules were made by solvent evaporation method.The average particle size of 1-octanol-loaded microcapsules was 750μm,and the encapsulation rate was about 25.82%.The adsorption kinetics curve,adsorption isotherm at 25℃and the equilibrium adsorption capacity at different temperature and pH were measured in the experiments of disposing low concen-tration phenol solution by microcapsules.The analysis results show that the adsorption process of phenol by 1-octanol-loaded microcapsules and un-loaded microcapsules conforms pseudo-first-order model,which means the adsorption rate is positively linearly correlated with the concentration of phenol.Both Langmuir model and Henry’s law fit the adsorption isotherm at 25℃well,and the maximum adsorption capacity of 1-octanol-loaded mi-crocapsules is 33.01 mg·g^(-1).The equilibrium adsorption capacity of 1-octanol-loaded microcapsules decreases as the temperature and pH value rises,while it will reduce if the pH value is too low.

关 键 词：微胶囊 苯酚 正辛醇 吸附 

分 类 号：TQ[化学工程]