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Enhanced Washing by Particle Dispersion – Chemical Extraction for Soil Contaminated with Heavy Metal and Petroleum Hydrocarbon : 입자 분산과 화학적 추출을 통한 토양세척기술의 중금속 및 유류오염물질 제거 효율 증진
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 박준범 | - |
dc.contributor.author | 신현진 | - |
dc.date.accessioned | 2017-07-13T06:42:11Z | - |
dc.date.available | 2017-07-13T06:42:11Z | - |
dc.date.issued | 2017-02 | - |
dc.identifier.other | 000000142608 | - |
dc.identifier.uri | https://hdl.handle.net/10371/118757 | - |
dc.description | 학위논문 (박사)-- 서울대학교 대학원 : 건설환경공학부, 2017. 2. 박준범. | - |
dc.description.abstract | The basic idea of soil washing was started from a physical approach based on mining and mineral processing principle. After 90s, various chemical reagents were tried to enhance the washing efficiency based on the reactions such as chemical extraction, and solubilization. However, previous researches have only focused on the chemical aspects of desorption mechanism without considering the microscopic characteristics of fine-grained soils which can be a great influence factor to washing reactions.
A novel soil washing equipment for fine grained soil applying physical forces to contaminated soil to supply sufficient impact force to disturb the microstructural aggregation and/or loosen the binding between contaminant and soil particles. Field soils contaminated by heavy metals from an old refinery site and dredged material in South Korea was investigated to evaluate the contaminant removal efficiency. Three kinds of washing methods including physical desorption, chemical solubilization, and the combined effort were performed in this study. The best removal efficiency was found in the combination of physical and chemical treatments in every experiment cases. The test results show contaminant removal efficiency in soil washing system can be enhanced using physical forcing system. | - |
dc.description.tableofcontents | Chapter 1 Introduction 1
1.1 Background 1 1.2 Scope and Objectives 6 1.3 Dissertation Organization 7 Chapter 2 Literature Review 9 2.1 Volume Reduction 9 2.2 Chemically-enhanced Soil Washing 10 2.3 Case Studies on Field Application 15 2.4 Parametric Study for Enhancing Efficacy 24 2.5 Summary 29 Chapter 3 Research Concept and Design of Equipment 31 3.1 Microstructural Features 31 3.2 Design of Equipment 34 3.3 Experimental Program 41 Chapter 4 Materials and Methods 43 4.1 Reactivity tests 43 4.2 Lab-scale Washing Experiments 45 4.3 Type-I Pilot-scale Washing Experiments 47 4.3.1 Prototype apparatus 49 4.3.2 Pilot-scale apparatus 61 4.4 Type-II Pilot-scale Washing Experiments 70 Chapter 5 Results and Discussion 73 5.1 Reactivity tests 73 5.2 Lab-scale Washing Experiments 78 5.3 Type-I Pilot-scale Washing Experiments 95 5.4 Type-II Pilot-scale Washing Experiments 105 Chapter 6 Conclusions and Recommendations 109 Bibliography 112 Abstract in Korean 117 | - |
dc.format | application/pdf | - |
dc.format.extent | 3748752 bytes | - |
dc.format.medium | application/pdf | - |
dc.language.iso | en | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject | Soil washing | - |
dc.subject | Fine-grained soil | - |
dc.subject | Microstructural units | - |
dc.subject | Heavy metal | - |
dc.subject | Petroleum hydrocarbon | - |
dc.subject.ddc | 624 | - |
dc.title | Enhanced Washing by Particle Dispersion – Chemical Extraction for Soil Contaminated with Heavy Metal and Petroleum Hydrocarbon | - |
dc.title.alternative | 입자 분산과 화학적 추출을 통한 토양세척기술의 중금속 및 유류오염물질 제거 효율 증진 | - |
dc.type | Thesis | - |
dc.description.degree | Doctor | - |
dc.citation.pages | 117 | - |
dc.contributor.affiliation | 공과대학 건설환경공학부 | - |
dc.date.awarded | 2017-02 | - |
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