한국해양대학교

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해조류 바이오차 기반 나노 복합재의 양이온 음이온 염료 제거 특성

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dc.contributor.advisor 장재수 -
dc.contributor.author 오희소 -
dc.date.accessioned 2020-07-22T04:18:52Z -
dc.date.available 2020-07-22T04:18:52Z -
dc.date.issued 2020 -
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/12448 -
dc.identifier.uri http://kmou.dcollection.net/common/orgView/200000283930 -
dc.description.abstract Dyes contained in wastewater are one type of the organic pollutants that adversely affects the environment. Biochar is known for effectively removing dyes from dye-containing wastewater. Biochar has been widely researched as environmentally friendly and inexpensive technology to remove dyes from wastewater. Biomass, which is used as a raw material for making biochar is very diverse, including natural materials, industrial wastes, and agricultural by-products. It also has different properties, and biomass type is a parameter to determine adsorption capabilities of biochars for the organic contaminant. This study used kelp to make biochar among marine macroalgae generated in large quantities around coastal areas, and developed biochar-based nano-composites using Mg and Fe oxides. The characteristics of the manufactured biochars were investigated using FTIR, SEM, and BET surface area analyzer. The value of pH and initial dye concentration were used as experimental variables for the evaluation of biochar adsorption capacities for dyes. In addition, various adsorption kinetics and isothermal models were used to evaluate the dye removal capabilities of biochars. The nano-composites showed a huge difference in ash content and pH compared to the conventional biochars. The nano-composites which had chemically-modified surface affected the adsorption of dyes. In particular, the maximum adsorption capacity of KB-Mg for congo red (CR) was 1003.464 mg/g. For crystal violet (CV), KB which was not pre-treated showed the highest adsorption capacity. These results demonstrated that the nano-composite with Mg was effective in removing the anionic dye, and the cationic dye was well adsorbed to pristine biochar which was not specifically treated. It is considered that the main mechanism for the adsorption of both CR and CV to the biochars is an electrostatic interaction. -
dc.description.tableofcontents 목 차 List of Tables ⅳ List of Figures ⅴ Abstract ⅶ 1. 서 론 1 2. 문헌 고찰 3 2.1 염료 3 2.1.1 염료의 특성 3 2.1.2 염료의 제거 5 2.2 바이오차 7 2.2.1 바이오차의 물리화학적 특성 7 2.2.2 바이오차의 유기오염물질 제거 7 2.2.3 바이오차 기반 나노 복합재 9 3. 실험재료 및 방법 11 3.1 실험재료 11 3.2 바이오차 및 바이오차 기반 나노 복합재 제작 11 3.3 바이오차의 특성 13 3.4 흡착 실험 14 3.5 흡착등온선 모델 15 3.6 동역학 모델 16 4. 실험결과 및 고찰 17 4.1 바이오차의 특성 17 4.2 흡착 실험 4.2.1 농도에 따른 염료 흡착 30 4.2.2 pH에 따른 염료 흡착 32 3.4 흡착등온선 모델 34 3.5 동역학 모델 37 5. 결론 39 6. 참고문헌 40 -
dc.format.extent 53 -
dc.language kor -
dc.publisher 한국해양대학교 대학원 -
dc.rights 한국해양대학교 논문은 저작권에 의해 보호받습니다. -
dc.title 해조류 바이오차 기반 나노 복합재의 양이온 음이온 염료 제거 특성 -
dc.type Dissertation -
dc.date.awarded 2020. 2 -
dc.contributor.alternativeName Differential adsorption of cationic and anionic dyes by nano-composites based on marine macroalgae biochar -
dc.contributor.department 대학원 토목환경공학과 -
dc.contributor.affiliation 한국해양대학교 대학원 토목환경공학과 -
dc.description.degree Master -
dc.identifier.bibliographicCitation 오희소. (2020). 해조류 바이오차 기반 나노 복합재의 양이온 음이온 염료 제거 특성. -
dc.subject.keyword marine macroalgae 해조류, biochar 바이오차, dye 염료, adsorption 흡착, nano-composite 나노 복합재. -
dc.contributor.specialty 환경공학 -
dc.identifier.holdings 000000001979▲200000001565▲200000283930▲ -
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