【摘要】 改性不溶性淀粉黄原酸酯是一种具有室温稳定性并对重金属离子有较高吸附率的廉价离子交换剂。其吸附容量为0.44—1.60mN/gIISX,该交换剂对锌离子的螯合比为2:1,对铬(Ⅲ),镍离子为1:1.用稀酸可使IISX再生,并同时回收重金属。更多还原

【Abstract】 Improved insoluble starch xanthate (IISX) is a low-cost ion exchanger which is stable at roon temperature and has high adsorbing rate(99%) for heavy metal ions. The adsorption capacities of IISX are 0.44-1. 6mN ions/gIISX and chelate ratios are 2.1(Zn2 + )and 1:1 (Cr3 + , Ni2 + ) respectively. IISX may be regenerated by dilute HCl(1:1).更多还原