|
| Adsorption Mechanism of Ammonia-Nitrogen Wastewater in Rare-Earth with Modified Fly Ash |
|
Received:May 21, 2017
Revised:May 24, 2017
Accepted:May 31, 2017
Published Online:September 18, 2017
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2017.10.015 |
| KeyWord:modified fly ash; ammonia-nitrogen wastewater; rare earth; adsorption; mechanism |
| Author | Institution |
| jiahanying |
内蒙古科技大学 |
| hexigetu |
内蒙古科技大学 |
| wangjihui |
内蒙古科技大学 |
| wujinxiu |
内蒙古科技大学 |
|
| Hits: 1975 |
| Download times: 1821 |
| Abstract: |
| Fly ash was modified by sodium hydroxide, sulfuric acid, and lanthanum respectively. Adsorption behavior of fly ash on ammonia-nitrogen wastewater in rare earth before and after modification was studied by correlation method. The results show that alkali-modified fly ash has optimum adsorption effect. Equilibrium adsorption efficiency of alkali-modified fly ash at room temperature is 81.56% under the conditions including pH value of solution of 11.7, and dosage of fly ash of 5 g. Adsorption process of alkali-modified fly ash on ammonia-nitrogen wastewater conforms to Elovich Isothermal Adsorption Equation. The adsorption is benign with adsorption capacity of 1.72 mg/g. |
| Close |