论文部分内容阅读
研究了微波辐射香草醛改性壳聚糖产物V-CTS对金属Zn2+的动态吸附作用,测定了吸附等温线和吸附动力学曲线,用红外光谱对产物的结构进行表征。结果表明,该吸附剂对Zn2+离子的吸附行为符合Freundich吸附等温式,吸附过程符合一级反应动力学过程,且为扩散控制步骤,反应活化能为68.70kJ.mol-1,对Zn2+的吸附在2～3h内即可达到吸附平衡。
The dynamic adsorption of metal Zn2 + by V-CTS, a vanilloid-modified chitosan product, was studied. The adsorption isotherms and adsorption kinetics curves were determined. The structure of the product was characterized by infrared spectroscopy. The results showed that the adsorption behavior of Zn2 + ions by the adsorbent was in accordance with the Freundich adsorption isotherm. The adsorption process accorded with the first-order reaction kinetics and the diffusion-controlled step was used. The reaction activation energy was 68.70 kJ · mol-1. The adsorption of Zn2 + 2 ~ 3h adsorption equilibrium can be achieved.