【摘要】 近年来,天然高分子吸附剂在水处理技术方面的应用成为热点,但研究多集中于简单水体环境,对于复杂水质条件下的处理效果及原理探讨较少。采用酶解胺化淀粉作为吸附剂,对由重金属Cr(Ⅵ)与染料AO7组成的二元体系进行吸附,研究不同pH、离子强度、相对浓度条件下对吸附过程的影响,并通过动力学拟合确定吸附速率及吸附方式。结果表明,铬酸根离子的加入对酸性偶氮染料的吸附有抑制作用;溶液离子强度增大,对染料的吸附量下降;其吸附过程满足准2级吸附动力学方程。更多还原

【Abstract】 In recent years,natural macromolecule adsorbent using into water treatment technology became very popular,but most of the research focused on the single system of dye or heavy metal,few for the binary system.In this paper,CAES was used as adsorbent,researched the influence between heavy metal ions and dye molecules in binary system with different pH,relative concentration,ionic strength.Make sure adsorption rate and adsorption manner by the dynamic fitting.The result showed that,AO7 adsorption ability was restrained by addition of Cr(Ⅵ);as the increasing of ionic strength,the quantity of adsorption went down;The dynamic adsorption of AO7 and Cr still followed the second-order kinetics.更多还原