Removal of lithium from water by aminomethylphosphonic acid-containing resin
This study gives an overview of the ability of aminomethylphosphonic acid containing chelating resin for the removal of lithium (Li+) from water. Studies were performed under various conditions such as resin dose, initial Li+ concentration, solution pH and solution temperature. Results show...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Serbian Chemical Society
2018-01-01
|
| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2018/0352-51391800020C.pdf |
| Summary: | This study gives an overview of the ability of aminomethylphosphonic acid
containing chelating resin for the removal of lithium (Li+) from water.
Studies were performed under various conditions such as resin dose, initial
Li+ concentration, solution pH and solution temperature. Results showed that
the sorption of Li+ reached equilibrium within 15 min and the experimental
data were well fitted by the pseudo-second-order kinetic model. The Li+
sorption was highly pH dependent, and the optimum pH for Li+ removal was ≥3.
Isotherm sorption data displayed good correlation with the Langmuir model,
and maximum monolayer sorption capacity of resin found as 13.65 mg/g.
Thermodynamic studies suggested that Li+ sorption onto chelating resin was
an exothermic and spontaneous process in nature. Resin can be regenerated by
0.1 M HCl, NaCl or H2SO4 with > 99 % efficiency. Desorption of Li+ with 0.1
M NaCl resulted in no changes of the uptake capacity through four subsequent
sorption/desorption cycles |
|---|---|
| ISSN: | 0352-5139 1820-7421 |