DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 최민기 | - |
dc.contributor.author | Jeon, Hyungmin | - |
dc.contributor.author | 전형민 | - |
dc.date.accessioned | 2024-07-25T19:30:16Z | - |
dc.date.available | 2024-07-25T19:30:16Z | - |
dc.date.issued | 2022 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1044797&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/320397 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2022.8,[iii, 24 p. :] | - |
dc.description.abstract | To eliminate the radioisotope ${90}$Sr${2+}$ from contaminated water, various inorganic ion-exchange materials have been developed. LTA zeolite has been widely used for Sr${2+}$ capture adsorbent to get rid of Sr${2+}$ ion under contaminated water due to the high Sr${2+}$ removal at equilibrium state. Due to the small micropores of LTA zeolite, however, LTA zeolite has low adsorption kinetics, which is a weakness for continuous flow removal system. To remove Sr${2+}$ diffusion limitation through zeolite micropore, we synthesized mesoporous-sodalite (Meso-SOD), so that Sr${2+}$ ions can diffuse through only mesopores. Various experimental analyses exhibit that Meso-SOD zeolite has enough adsorption site to capture 1 ppm Sr${2+}$ ion under presence of competing cations. Pseudo-second order fitting analysis exhibits that FAU zeolite which has larger micropore (12 MR) showed 7.6 times higher kinetic value and Meso-SOD has 33 times higher that conventionally used LTA (8MR) zeolite respectively. Additionally, Sr${2+}$ removal under simulated ground and sea water, which includes competing cations (e.g., Na$^+$, K$^+$, Ca${2+}$, Mg${2+}$) are comparable or even better than LTA and FAU zeolite. We anticipate that Meso-SOD zeolite will demonstrate a sharp S-shape curve in breakthrough column experiment because of high Sr${2+}$ adsorption kinetics. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 방사성 스트론튬▼a메조기공▼a이온교환 속도▼a스트론튬 제거율 | - |
dc.subject | Radioactive strontium▼aMesopore▼aIon-exchange kinetics▼aStrontium removal | - |
dc.title | Design of zeolite ion-exchangers for selective and fast removal of radioactive strontium | - |
dc.title.alternative | 방사성 스트론튬의 선택적 흡착 및 높은 흡착속도를 위한 제올라이트 기반의 흡착제 개발 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :생명화학공학과, | - |
dc.contributor.alternativeauthor | Choi, Minkee | - |
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