欢迎访问《硅酸盐通报》官方网站,今天是
分享到:

硅酸盐通报 ›› 2018, Vol. 37 ›› Issue (2): 718-724.

• • 上一篇    下一篇

活性白土对油溶性黄色素吸附行为的研究

朱兴月;高惠民;任子杰;陈智杰;岑对对   

  1. 武汉理工大学资源与环境工程学院,武汉,430070;武汉理工大学资源与环境工程学院,武汉430070;武汉理工大学矿物资源加工与环境湖北省重点实验室,武汉430070
  • 出版日期:2018-02-15 发布日期:2021-01-18

Adsorption Behavior of Activated Bentonite on Oil-soluble Yellow Pigment

ZHU Xing-yue;GAO Hui-min;REN Zi-jie;CHEN Zhi-jie;CEN Dui-dui   

  • Online:2018-02-15 Published:2021-01-18

摘要: 为研究微波法制备活性白土(activated bentonite,AB)对油溶性黄色素(oil-soluble yellow pigment,OSYP)的吸附行为,考察了活性白土投加量、吸附时间、吸附温度对色素去除率的影响,并对吸附行为进行了动力学模型、等温吸附模型以及热力学研究.结果表明:活性白土用量40 g/L、吸附时间40 min时对OSYP吸附效果较好.活性白土对OSYP的吸附行为符合拟二级动力学模型,Freundlich等温吸附方程更能描述吸附行为,该吸附是自发(△G<0)、吸热(△H>0)、熵增加(△S>O)的过程.

关键词: 活性白土;油溶性黄色素;吸附;机理分析

Abstract: To study the adsorption behavior of activated bentonite (AB)prepared with microwave activation on oil soluble yellow pigment (OSYP),the impacts of the adsorbent concentration,contact time and contact temperature on the pigment removal were investigated and the kinetics,equilibrium isotherms and thermodynamic study were carried out.It is found that when the concentration of AB is 40 g/L and the contact time is 40 min AB could adsorb OSYP well.The adsorption process fits better with the pseudo-second-order model and the Freundlich isotherm equation.And the thermodynamic parameters indicated the adsorption is spontaneous (△G < 0),endothermic (△H > 0) and entropy increased (△S > 0).

Key words: activated bentonite;oil-soluble yellow pigment;adsorption;mechanism analysis

中图分类号: