Abstract
The present study was conducted to evaluate the feasibility of nano-alumina for nitrate removal from aqueous solutions. The nature and morphology of sorbent was characterized by XRD, FTIR, BET and SEM analysis. Batch adsorption studies were performed as a function of contact time, initial nitrate concentration, temperature, pH and influence of other interfering anions. Nitrate sorption kinetics was well fitted by pseudo-second-order kinetic model. The maximum sorption capacity of nano-alumina for nitrate removal was found to be ca. 4.0mgg-1 at 25±2°C. Maximum nitrate removal occurred at equilibrium pH ca. 4.4. The nitrate sorption has been well explained using Langmuir isotherm model. Results from this study demonstrated the potential utility of nano-alumina for nitrate removal from water.
| Original language | English |
|---|---|
| Pages (from-to) | 317-323 |
| Number of pages | 7 |
| Journal | Chemical Engineering Journal |
| Volume | 163 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Oct 2010 |
| Externally published | Yes |
Keywords
- Competing anions
- Kinetic modeling
- Nano-alumina
- Nitrate removal
- PH
- Sorption isotherms
ASJC Scopus subject areas
- General Chemistry
- Environmental Chemistry
- General Chemical Engineering
- Industrial and Manufacturing Engineering