| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.1883 |
| 발표분야 |
에너지 |
| 제목 |
Equilibrium, kinetics, and thermodynamics of Li+ adsorption by H2TiO3 in diluted aqueous lithium resources |
| 초록 |
H2TiO3 adsorbent was prepared by acid delithiation of Li2TiO3 precursor. It was investigated for its lithium (Li+) uptake in aqueous solution and in seawater. The adsorption capacity was ~33.75 mg g-1 at solid to liquid (S/L) ratio of 0.2 to 0.4. Li+ uptake is directly and inversely proportional to the initial pH and S/L ratio, respectively. The adsorption process follows pseudo-second order equation and isotherm fits well the Langmuir equation. It was shown to be spontaneous and endothermic in nature. The H2TiO3 can efficiently and selectively adsorb Li+ from seawater and can be used for five cycles while maintaining its initial adsorption capacity (~33.6 mg/g). Overall, the prepared adsorbent was proven to be a recyclable and efficient ion-sieve for the recovery of Li+. This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) grant funded by the Ministry of Education (No. 2009-0093816). |
| 저자 |
정욱진1, 서정길2, 이성풍3, Eleazer L. Vivas1, Lawrence A. Limjuco2, Grace M. Nisola3, LAWAGON CHOSEL1
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| 소속 |
1Department of Energy Science and Technology (DEST), 2Energy and Environment Fusion Technology Center (E2FTC), 3Myongji Univ. |
| 키워드 |
adsorption; seawater; lithium recovery; ion sieve
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| E-Mail |
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| 원문파일 |
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