|
| Adsorption Properties of Modified Lignin on PtCl62- |
|
Received:October 19, 2017
Revised:October 23, 2017
Accepted:October 30, 2017
Published Online:March 20, 2018
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2018.04.014 |
| KeyWord:modified lignin, PtCl62-, adsorptive property |
| Author | Institution |
| ZHANG Bao-ping |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
| GUO Mei-chen |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
| LIU Yun |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
| SHEN Bo-wen |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
|
| Hits: 1745 |
| Download times: 2536 |
| Abstract: |
| Effects of adsorption time and initial concentration of PtCl62- on absorptivity of PtCl62- were investigated applying quaternary ammonium lignin and quaternary ammonium chelated lignin as adsorbent. Effect of hydrochloric acid concentration on adsorptive selectivity of PtCl62- was studied. Kinetic equations and adsorption isotherms of adsorption process were explored. The results show that equilibrium adsorption time and saturation adsorption capacity are 120 min and 67.90 mg/g for quaternary ammonium lignin. Equilibrium adsorption time and saturation adsorption capacity are 300 min and 218.75 mg/g for quaternary ammonium chelated lignin. Adsorption selectivity of PtCl62- is satisfactory when concentration of hydrochloric acid is 1.0 mol/L, and selectivity rises along with drop of hydrochloric acid concentration. Adsorption of PtCl62- on modified lignins is in accordance with pseudo-second-order equation and Langmuir isothermal adsorption equation, and is of chemical single molecule layer adsorption. |
| Close |