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| Thermodynamic Analysis of Removal of Trace Iron in Cobalt Sulfate Solution with Chelating Resin Monophos |
| Received:March 27, 2018 Revised:March 30, 2018 |
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| DOI：doi：10.3969/j.issn.1007-7545.2018.08.002 |
| KeyWord:ion exchange; trace iron; adsorption thermodynamics; cobalt electro-refining |
| Author | Institution |
| YANG Bin |
河南科技大学 材料科学与工程学院 |
| WANG Guang-xin |
河南科技大学 材料科学与工程学院 |
| ZHAO Yun-chao |
河南科技大学 材料科学与工程学院 |
| DU Geng-xin |
河南科技大学 材料科学与工程学院 |
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| Abstract: |
| Adsorption effect of new chelating resin Monophos on trace iron in cobalt sulfate solution was studied under different adsorption conditions. Adsorption mechanism of resin was analyzed from thermodynamics. The results show that after iron adsorption with Monophos, concentration of trace iron in initial material drops from 1.1~2.1 mg/L to 0.4~0.9 mg/L with iron removal rate of 57%~63%. Adsorption process of Monophos on solution of Fe is closely consistent with Langmiur adsorption isotherm model. Adsorption process of Fe impurities in liquid is a spontaneous and endothermic physical adsorption. Adsorption of Monophos on iron impurities in liquid is more effective with rise of adsorption temperature. |
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