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RISS 인기검색어
- 검색키워드
- 저자 : S. E. Burns (검색결과 3 건)
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Geological Disposal of Energy-Related Waste
N. N. N. Yeboah,S. E. Burns 대한토목학회 2011 KSCE JOURNAL OF CIVIL ENGINEERING Vol.15 No.4
The production of waste materials during energy recovery processes is an unavoidable consequence of the need for energy;consequently, safe and efficient disposal or reuse alternatives for these waste materials is essential for sustainable development. For waste streams that must be geologically disposed, the largest volumes of energy related waste include Coal Combustion Products (CCPs) such as fly ash, coal mining wastes, and processed water and drill cuttings from oil and gas exploration, with relatively small amounts of silica resulting from pipe scaling in geothermal energy production. The fate of the vast majority of these energy-related wastes is geologic disposal, which ranges from placement in landfills (lined or unlined) or surface impoundments, to deep injection within geologic units. Applications for productive reuse of energy-related wastes are cost effective alternatives to disposal, and are gaining popularity as sustainability of processing becomes more critical. This review paper examines geologic disposal and reuse of energy-related waste streams within the U.S., and provides insight into fuel-to-waste production ratios, preferred disposal or productive reuse alternatives, and associated geotechnical/environmental considerations.
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Choo, H.,Lee, W.,Lee, C.,Burns, S. E. American Society of Civil Engineers 2018 Journal of geotechnical and geoenvironmental engin Vol.144 No.1
<P>This study investigates the hydraulic conductivity (K) of binary mixed soils containing two different-sized silica particles, with the ultimate goal of developing the porosity (n) and equivalent particle size (deq) estimating formulas for binary mixed soils. Theoretical backgrounds for K of mixed soils were reviewed. In addition, a series of constant head permeameter tests for mixtures with three different size ratios between small and large particles were performed. It is demonstrated that the K of tested materials decreases with an increase in volume fraction of small particles (SCV) when SCV<SCV(volumetric critical small particle content) because of the decreases in both n and deq. In contrast, when SCV>SCV shows less change with SCV because of the offset mechanism between increased n and decreased <mml:msub>deq. Additionally, n and deq estimating methods for mixed soils are suggested in this study and compared with the experimental results.</P>
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Sustainable Development and Energy Geotechnology− Potential Roles for Geotechnical Engineering
R. J. Fragaszy,산타마리나,A. Amekudzi,D. Assimaki,R. Bachus,S. E. Burns,M. Cha,조계춘,D. D. Cortes,S. Dai,D. N. Espinoza,L. Garrow,H. Huang,J. Jang,J. W. Jung,S. Kim,K. Kurtis,이창호,C. Pasten,H. Phadnis,G. Rix 대한토목학회 2011 KSCE Journal of Civil Engineering Vol.15 No.4
The world is facing unprecedented challenges related to energy resources, global climate change, material use, and waste generation. Failure to address these challenges will inhibit the growth of the developing world and will negatively impact the standard of living and security of future generations in all nations. The solutions to these challenges will require multidisciplinary research across the social and physical sciences and engineering. Although perhaps not always recognized, geotechnical engineering expertise is critical to the solution of many energy and sustainability-related problems. Hence, geotechnical engineers and academicians have opportunity and responsibility to contribute to the solution of these worldwide problems. Research will need to be extended to non-standard issues such as thermal properties of soils; sediment and rock response to extreme conditions and at very long time scales; coupled hydro-chemo-thermo-bio-mechanical processes; positive feedback systems; the development of discontinuities; biological modification of soil properties; spatial variability; and emergent phenomena. Clearly, the challenges facing geotechnical engineering in the future will require a much broader knowledge base than our traditional educational programs provide. The geotechnical engineering curricula, from undergraduate education through continuing professional education, must address the changing needs of a profession that will increasingly be engaged in alternative/renewable energy production; energy efficiency; sustainable design, enhanced and more efficient use of natural resources, waste management, and underground utilization.
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