한국해양대학교

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염화철(III)을 이용한 오염준설토 내 아연제거 연구

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dc.contributor.author 권오혁 -
dc.date.accessioned 2017-02-22T06:44:07Z -
dc.date.available 2017-02-22T06:44:07Z -
dc.date.issued 2015 -
dc.date.submitted 57069-08-26 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175504 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/9738 -
dc.description.abstract Dredged-sediments increased to about 15million m2 from 1998 to 2012 by port construction, sediment reclamation and dredging business. Most of dredged-sediments which are generated in Korea have been treated by Marine dumping. However, there are increasing concern about contamination by heavy metals in dredged-sediments. Therefore, it is required to remove heavy metals from dredged-sediments. The purpose of this study is to remove zinc from domestic dredged sediments contaminated with ZnS using ferric chloride. Consequently, leaching behavior of zinc was investigated under the following leaching conditions -
dc.description.abstract 400rpm, 80℃ and 0.5M FeCl3 in 1M HCl, and content of zinc in residue decreased to 184mg/kg which meet Marine dumping regulations(Zn:200mg/kg). The shrinking core model(Ash diffusion controlled) was investigated based on the leaching results. Correlation coefficients were closed to 1 so that model best fitted to the kinetic data. The activation energy for the leaching process was found to be 64.1-76.9kJ/mol for 1-0.25M FeCl3 respectively, and that means leaching precess depends on chemical reaction. -
dc.description.abstract 40 and 90℃ in temperature, 0.25-1M in concentration of ferric ion, 5-20% in pulp density, and 200-600rpm in stirring speed. Leaching efficiency of zinc increased with leaching temperature and ferric ion concentration. The leaching efficiency was 96.7% under the following conditions -
dc.description.tableofcontents 제 1 장. 서 론 1 1.1 개요 1 1.2 연구사례 7 1.2.1 3가 철 이온의 특징 7 1.2.2 침출연구사례 7 제 2 장. 이론적 배경 11 2.1 열역학적 해석 11 2.2 속도론적 해석 13 제 3 장. 침출거동 확인 19 3.1 사용시료 19 3.2 실험방법 19 3.3 실험결과 22 3.3.1 교반속도에 따른 침출거동 22 3.3.2 Fe3+ 농도에 따른 침출거동 24 3.3.3 광액비 변화에 따른 침출거동 25 3.3.4 온도변화에 따른 침출거동 27 제 4 장. 속도론적 해석결과 31 4.1 Shrinking core model (Film diffusion controlled) 31 4.2 Shrinking core model (Reaction controlled) 35 4.3 Shrinking core model (Ash diffusion controlled) 39 4.4 Dickinson and Heal model 42 4.5 활성화 에너지(Activation energy) 47 제 5 장. 결론 50 참고문헌 52 감사의 글 55 -
dc.language kor -
dc.publisher 한국해양대학교 일반대학원 -
dc.title 염화철(III)을 이용한 오염준설토 내 아연제거 연구 -
dc.title.alternative The removal of zinc from contaminated dredged-sediments -
dc.type Thesis -
dc.date.awarded 2015-02 -
dc.contributor.alternativeName Kwon -
dc.contributor.alternativeName ohhyeok -
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해양에너지자원공학과 > Thesis
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