|
| Study of Effect of Steel Slag on U(Ⅵ) Removal from Aqueous Solution |
|
Received:March 23, 2019
Revised:April 07, 2019
Accepted:April 08, 2019
Published Online:July 15, 2019
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2019.08.018 |
| KeyWord:steel slag; pH; ionic strength; humic acid(HA); reaction time |
| Author | Institution |
| yangtianzi |
东华理工大学省部共建核资源与环境国家重点实验室;东华理工大学水资源与环境工程学院 |
| zhangweimin |
东华理工大学水资源与环境工程学院，南昌 |
|
| Hits: 2167 |
| Download times: 1889 |
| Abstract: |
| Effects of pH value, reaction time, ionic strength and humic acid(HA) on U(Ⅵ) adsorption by steel slag were studied by batch method. The experiments show that U(Ⅵ) removal by steel slag rises slowly first, then rapidly with time, and reaches adsorption equilibrium at 10 h. Ionic strength is mainly affected by compensation competition between charge and electrolyte ions and adsorbate ions exchange. With initial pH value of 3-5, adsorption capacity drops significantly with increase of ionic strength. With initial pH value of 6-9, adsorption capacity rises gradually with no significant change. At high pH value, influence of ionic strength on adsorption is obviously weakened. HA significantly promotes adsorption of U(VI) on steel slag with initial pH<3.5. HA has an inhibiting effect on adsorption of U(Ⅵ) with initial pH>4, and enhances with increase of initial pH value. |
| Close |
|
|
|