Back to Search
Start Over
Selective adsorption and removal ability of pine needle-based activated carbon towards Al(III) from La(III).
- Source :
-
Journal of Dispersion Science & Technology . 2019, Vol. 40 Issue 2, p186-191. 6p. 4 Charts, 9 Graphs. - Publication Year :
- 2019
-
Abstract
- Rare earth elements are an important strategic resource. As one of the most valuable member, lanthanum plays a key role in lanthanide. However, trace Al(III) impurity in lanthanum materials can seriously damage the performance of lanthanum materials. In this paper, a nitrogen-containing activated carbon, AC-PN-700, was synthesized using pine needle as raw material and KOH as activator. The ACPN-700 was characterized by surface area analyzer, elemental analysis and FT-IR. The adsorption and selective ability of AC-PN-700 towards Al(III) were investigated. The BET specific surface area of AC-PN-700 was 596.4 m².g-1, and the average pore diameter was 2.7nm. Depend on its large specific surface, well-developed internal pore structure and abundant nitrogen-containing functional groups, the AC-PN-700 possesses strong adsorption affinity and excellent recognition selectivity towards Al(III). The adsorption capacity of AC-PN-700 towards Al(III) could reach to 3.89mg.g-1, removal rate towards Al(III) was almost 100%, and relative selectivity coefficients with respect to La(III) is 9.5. The empirical Freundlich isotherm was found to describe well the equilibrium adsorption data. In addition, AC-PN-700 possesses better regeneration ability and reusability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01932691
- Volume :
- 40
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Dispersion Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 137228044
- Full Text :
- https://doi.org/10.1080/01932691.2018.1464933