Degradation of perchlorate using Pd/Activated carbon with adsorption/catalysis bi-functional roles = 흡착/촉매 다기능 물질의 설계를 통한 퍼클로레이트 이온 제거 방법에 관한 연구

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dc.contributor.advisorChoi, Min-Kee-
dc.contributor.authorKim, You-Na-
dc.description학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2013.2, [ v, 31 p. ]-
dc.description.abstractAlthough perchlorate (ClO4-) has a detrimental effect on human health, there have been limited solutions for the permanent degradation of perchlorate due to its extraordinary stability. Here an integrated process com-bining a physical adsorption and a catalytic degradation by using Pd/activated carbon (Pd/AC) and Pd/N-doped activated carbon (Pd/N-AC) as an adsorption/catalysis bi-functional material was demonstrated. During the perchlorate adsorption from waste water, the porous structure of the carbon provides adsorption sites for perchlorate. Pd/N-AC exhibited 38 ~ 52 % higher adsorption capacities than Pd/AC both in the presence and absence of competing ions (NO3-, SO42- and HCO3-). This can be attributed to the more positive surface charge of Pd/N-AC as revealed by zeta potential measurement. After the carbon surface is saturated with perchlorate, the adsorbed perchlorate can be fully decomposed by the catalytic function of supported Pd catalysts within 2 h under flowing H2 at 503 K. The perchlorate adsorption/catalytic decomposition cycle can be repeated up to three times without the loss of perchlorate adsorption capacity. Because the carbon adsorbents can be regenerated by using H2 as a green reducing agent (producing only H2O), significant cost savings and a favorable environmental impact can be realized compared with the conventional perchlorate removal strategies.eng
dc.subjectCatalytic reduction-
dc.subjectactivated carbon-
dc.subject촉매적 환원-
dc.subject수질 정화-
dc.subjectwater purification-
dc.titleDegradation of perchlorate using Pd/Activated carbon with adsorption/catalysis bi-functional roles = 흡착/촉매 다기능 물질의 설계를 통한 퍼클로레이트 이온 제거 방법에 관한 연구-
dc.identifier.CNRN515059/325007 -
dc.description.department한국과학기술원 : 생명화학공학과, -
dc.contributor.localauthorChoi, Min-Kee-
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