硅酸盐通报2024，Vol.43Issue(1)：172-182,11.
不同层电荷数钙蒙脱石对黄曲霉毒素B1的吸附性能与机理研究
Adsorption Properties and Mechanism of Ca-Montmorillonite with Different Layer Charge Numbers on AFB1
肖莎 1彭同江 1孙红娟 1张伟2
作者信息
- 1. 西南科技大学固体废物处理与资源化教育部重点实验室,绵阳 621010||西南科技大学矿物材料及应用研究所,绵阳 621010
- 2. 四川新一美生物科技有限公司,绵阳 621010
- 折叠
摘要
Abstract
The adsorption properties and mechanism of AFB1 on Ca-montmorillonite with different layer charge numbers were studied by using Ca-bentonite from Inner Mongolia,Xinjiang and Liaoning as the research object.The mineralogical properties,physical and chemical properties of bentonite from different producing areas and the adsorption kinetics and isothermal adsorption of AFB1 by Ca-montmorillonite were studied by using X-ray diffractometer,infrared spectroscopy,high performance liquid chromatography and other testing methods.The results show that the bentonite from Inner Mongolia(N-Mt)with high Ca-montmorillonite content,large specific surface area and high layer charge numbers has better adsorption properties.When the initial concentration is 1.5 mg/L and the amount of adsorbent is 5 mg,the saturated adsorption capacity of AFB1 is 1.153 mg/g,and the adsorption process is less affected by pH value.The adsorption behavior of AFB1 on Ca-montmorillonite conforms to both the pseudo-first-order kinetic model and the pseudo-second-order kinetic model,which indicates that the adsorption process may involve both physical adsorption and chemical adsorption,and the adsorption between Ca-montmorillonite and AFB1 occurs at both interlayer and interlayer levels.The adsorption between Ca-montmorillonite and AFB1 is mainly due to electron donor-acceptor binding and ion-dipole interaction between Ca-montmorillonite and AFB1 molecules.The isothermal adsorption of AFB1 by Ca-montmorillonite is more in line with the Langmuir model,which is a monolayer adsorption.关键词
膨润土/蒙脱石/层电荷/黄曲霉毒素B1/吸附性能/吸附机理Key words
bentonite/montmorillonite/layer charge/AFB1/adsorption property/adsorption mechanism分类
通用工业技术引用本文复制引用
肖莎,彭同江,孙红娟,张伟..不同层电荷数钙蒙脱石对黄曲霉毒素B1的吸附性能与机理研究[J].硅酸盐通报,2024,43(1):172-182,11.
