公开(公告)号：US4260740A

公开(公告)日：1981-04-07

申请号：US083355

申请日：1979-10-10

申请人： Roy Carrington ,  Michael C. Hall

发明人： Roy Carrington ,  Michael C. Hall

IPC分类号： B01D15/04 ,  B01J39/22 ,  C02F1/42 ,  C08B3/00 ,  C08B3/12 ,  C08B3/24 ,  B01D39/00 ,  B01J39/00

CPC分类号： B01J39/22 ,  C08B3/12 ,  C08B3/24

摘要： A process for preparing a carboxylated cellulose ion exchange material which comprises heating a mixture of cellulose and citric, isocitric or aconitic acid at a temperature of from about 100.degree. to 160.degree. C. while removing water, and then treating the product with aqueous alkali at a pH of 8 to 11 to hydrolyze cross-linked acid residues; carboxylated cellulose ion exchange materials prepared by the process and their use in removing heavy-metal ions from aqueous solutions such as in industrial effluent treatment and precious metal recovery.

摘要翻译： 一种制备羧化纤维素离子交换材料的方法，包括在除去水之前，在约100至160℃的温度下加热纤维素和柠檬酸，异柠檬酸或乌头酸的混合物，然后用碱处理产物 pH为8〜11，水解交联的酸残基; 通过该方法制备的羧化纤维素离子交换材料及其用于从工业废水处理和贵金属回收的水溶液中除去重金属离子。