| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 |
23권 1호, p.895 |
| 발표분야 |
재료 |
| 제목 |
Efficient removal of strontium ions from seawater with grafted-network hydrogel |
| 초록 |
Efficient and selective removal of strontium from contaminated seawater is of a significant importance but still challenging. In this wor, a multi-polymer hydrogel composed of alginate/humic acid/Fe-aminoclay has been developed for effective adsorption and removal of strontium ions (Sr2+) from seawater. The effects of adsorbate concentration, pH, and reaction time on the removal efficiency of Sr2+ were researched. the results indicated that the adsorption capacity increased with increasing Sr2+ concentration from 1 to 10 ppm, which was attributed to the larger number of adsroption sites. Further increases in the Sr2+ concentration had no effect. The optimal pH and reaction time for the removal of Sr2+ were found to be pH 7 and 24 hours, respectively, with an adsorbent dosage of 20mg. The adsorption process fits well with the Freundlich isotherm with a R2 value of 0.9667 and a maximum adsorption capacity of 45.65mg·g-1. The kinetic study showed that the adsorption behavior follows pseudo-second order kinetics. The hydrogel showed good selectivity towards Sr2+ even in the presence of competitive cations having a higher concentration than Sr2+. |
| 저자 |
최상락1, 장성찬1, Yuvaraj haldrorai2, 노창현3, 허윤석1
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| 소속 |
1인하대, 2동국대, 3한국원자력(연) |
| 키워드 |
화공소재 전반 |
| E-Mail |
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| 원문파일 |
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