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시멘트계 합성물질을 이용한 비소 오염 토양의 고형화/안정화

Title
시멘트계 합성물질을 이용한 비소 오염 토양의 고형화/안정화
Other Titles
안정화
Author
박주양
Keywords
Solidification/Stabilization (S/S); Arsenic; Cement hydration; Monosulfate; Ettringite; Cement hydration materials; 고형화/안정화; 비소; 시멘트 수화반응; Monosulfate; Ettringite; 시멘트 수화물질(C-S-H; C-S-A
Issue Date
2012-02
Publisher
한국지반환경공학회(Korean Geo-Environmental Society)
Citation
한국지반환경공학회논문집, 2012, 13(2), P.59-65, 7P.
Abstract
Solidification/Stabilization(S/S) is one of the remediation technologies that have been applied for treating inorganic hazardous wastes. This study investigated the reduction of arsenic concentration of arsenic-contaminated soil using by S/S. The binder plays a role in controlling the mobility and solubility of the contaminants in S/S process, so it is important to determine the optimum binder content. Therefore, this study evaluated the effectiveness of S/S using four different binders(cement, zero valent iron, and monosulfate and ettringite(cement-based synthesized materials) at the binder content ranged between 6%(wt.) and 20%(wt.). The leachability of arsenic in 1 N HCl was different depending on the types of binders: cement(71.41%) > monosulfate(47.46%) > ettringite(46.36%) > ZVI(33.08%) at the binder content of 20%. Additionally, three kinds of a mixture binder were prepared using cement and additives(monosulfate, ettringite, calcium sulfoaluminate(CSA)) and tested for arsenic reduction. The highest arsenic removal capacity was found at the mass ratio of cement to the additive, 4:1 in all experiments using a mixture binder, regardless of the additives types. A mixture binder(cement and additives) resulted in higher arsenic removal relative to the arsenic removal when cement was used alone.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE01777798http://hdl.handle.net/20.500.11754/67384
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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