摘要
研究用氨基膦酸树脂吸附锌的过程 ,测定氨基膦酸树脂对Zn2 + 的吸附容量 ,考查介质pH、温度、吸附时间等因素对吸附过程的影响。测得氨基膦酸树脂对Zn2 + 的吸附容量为 191 2mg/g·R ;吸附速率常数 k2 98=1 37× 10 - 5s- 1 ;热力学参数ΔH0=2 0 8(kJ·mol- 1 ) ,ΔG0 =-31 4(kJ·mol- 1 ) ,ΔS0 =175 (J·mol- 1 ·K- 1 ) ;功能基与锌离子的配位摩尔比约为 1∶ 1。
The adsorption process of zinc with amino methylene phosphonic acid resin is investigated And the influences of medium pH, temperature, retention time on adsorption process are studied The adsorption capacity of the resin for zinc is 191 2mg/g·R The thermodynamic parameters are respectively: rate factor k 298 =1 37×10 -5 s -1 ; ΔH 0=20 8(kJ·mol -1 ); ΔG 0= -31 4(kJ·mol -1 ); and ΔS 0=175(J·mol -1 ·K -1 ) The molar ratio of function groups in the resin to zinc is about 1∶1 The desorption process of Zn from the pregnant resin is also researched
出处
《有色金属》
CSCD
2002年第1期27-29,46,共4页
Nonferrous Metals
基金
浙江省教育厅科研资助项目 ( 2 0 0 10 677)
丽水市科技局计划项目 ( 2 0 0 10 12 )
浙江省高校中青年学科带头人基金资助项目
关键词
氨基膦酸树脂
吸附
锌
湿法冶金
amino methylene phosphonic acid resin
adsorption
zinc
