食品科学2012，Vol.33Issue(23)：110-115,6.
草鱼鱼鳞对金属离子的吸附性能及其机理
Adsorption and Mechanism of Metal Ions onto Grass Carp Scales
摘要
Abstract
In this study,fish scale adsorbent was prepared from grass carp scales and comparatively investigated for its effectiveness in adsorbing several metal ions.The optimal conditions for Cu2+ adsorption by the adsorbent were studied and the mechanism of adsorption was explored by kinetic and thermodynamic analysis and infrared(IR) spectroscopy.The adsorbent had good adsorption capacity for different metal ions and its adsorption capacity followed the decreasing order: Cu2+ Zn2+ Co2+ Mn2+ Cr2+.The best adsorption results were obtained by using an adsorbent dose of 1.25 g/L to adsorb Cu2+ at an initial concentration of 200 μg/mL and pH 4 under room temperature conditions.Kinetic and thermodynamic analysis indicated that the adsorption of Cu2+ by the adsorbent was a multilayer process consisting of physical and chemical reactions and could be enhanced at higher temperatures,and the dynamic adsorption behavior could be well described by quasi-second-order kinetic model.IR spectroscopic analysis showed that the main functional groups in the fish scale adsorbent involved in adsorbing Cu2+ were amino,carboxyl,phosphate and carbonate groups,which were from rotein and hydroxyapatite,respectively.关键词
草鱼鱼鳞/金属离子/吸附性能/机理Key words
grass carp scales/metal ions/adsorption capacity/mechanism分类
资源环境引用本文复制引用
贾媛君,汪海波,熊进,欧其语,王发兴..草鱼鱼鳞对金属离子的吸附性能及其机理[J].食品科学,2012,33(23):110-115,6.基金项目
湖北省自然科学基金重点项目 （）
武汉市科技局科技攻关计划项目 （）
武汉市农副资源循环利用与新产品开发工程技术中心资助项目 （）
湖北省高等学校优秀中青年科技创新团队计划项目 （）
