CAJ | 학술논문

合成了壳聚糖包覆纤维素（CHCC）吸附剂,其结构经FTIR、元素分析进行表征。研究了对Au3＋的吸附包括pH的影响、吸附动力学、吸附选择性和吸附热力学。结果表明：吸附容量受pH影响较大;液膜扩散是吸附的主控制步骤,pH=3时优先选择吸附Au3＋;吸附热力学符合Freundlich模型。-NH2、-OH参与对Au3＋的吸附,树脂中的-CHO可能被Au3＋氧化。
합성료각취당포복섬유소（CHCC）흡부제,기결구경FTIR、원소분석진행표정。연구료대Au3＋적흡부포괄pH적영향、흡부동역학、흡부선택성화흡부열역학。결과표명：흡부용량수pH영향교대;액막확산시흡부적주공제보취,pH=3시우선선택흡부Au3＋;흡부열역학부합Freundlich모형。-NH2、-OH삼여대Au3＋적흡부,수지중적-CHO가능피Au3＋양화。
A kind of adsorbent for metal ions,cotton fiber coated by high loading of chitosan（CHCC） was prepared.Its structure was characterized by transform infrared spectrum（FTIR） and elemental analysis.The adsorption properties of CHCC for Au3＋,such as effect of pH,kinetics,adsorption selectivity and isotherm adsorption were investigated.The results showed that the adsorption for Au3＋ was strongly dependent on the pH.The resin had good adsorption selectivity for Au3＋ at pH 3.0.The dynamics results showed the adsorption for Au3＋ was controlled by liquid film diffusion.The adsorption process could be described with Freundlich equation.The adsorption mechanism of resin for Au3＋ was that amino groups and hydroxyl groups were main donors to adsorb Au3＋.Aldehyde group in CHCC might be oxidized by Au3＋.