Deposition Behavior of Polystyrene Latex Particles on Solid Surfaces during Migration through an Artificial Fracture in a Granite Rock Sample
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概要
- 論文の詳細を見る
The deposition behavior of colloids during transport through heterogeneous media was observed by conducting column experiments to study migration of polystyrene latex particles (diameter=309 nm) through columns packed with artificially fractured granite rock (length=300 and 150 mm). The experiments were conducted under conditions of different ionic strengths and flow rates. The results were similar to those for colloid deposition in columns packed with glass beads reported previously; the colloid breakthrough curves showed three stages, characterized by different rates of change in the concentration of effluent. Colloid deposition on the fracture surfaces was described by considering strong and weak deposition sites. Scanning Electron Microscopy (SEM) observations indicated the existence of strong and weak sites on the fracture surfaces regardless of mineral composition. The observations also showed that the strong deposition sites tended to exist on surface irregularities such as cracks or protrusions. The degree of colloid deposition increased with increasing ionic strength and decreasing flow rate. The dependencies on ionic strength and flow rate agreed qualitatively with the DLVO theory and the previous experimental results, respectively.
- 社団法人 日本原子力学会の論文
- 2001-06-25
著者
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Nagasaki Shinya
The University Of Tokyo Graduate School Of Frontier Science Institute Of Environmental Studies
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Tanaka Satoru
Department of Pediatrics, Graduate School of Medical and Dental Sciences, Kagoshima University
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NAGASAKI Shinya
Institute of Environmental Studies, Graduate School of Frontier Science, The University of Tokyo
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Tanaka Satoru
Department Of Cardiovascular Medicine Gifu Pref. Govt. Tajimi Hospital
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CHINJU Hirofumi
Department of Quantum Engineering and Systems Science, The University of Tokyo
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KUNO Yoshio
Tokai Works, Japan Nuclear Cycle Development Institute
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Chinju Hirofumi
Department Of Quantum Engineering And Systems Science The University Of Tokyo
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Kuno Yoshio
Tokai Works Japan Nuclear Cycle Development Institute
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Nagasaki S
The University Of Tokyo Graduate School Of Frontier Science Institute Of Environmental Studies
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Tanaka Satoru
Department Of Anesthesiology Sapporo Medical University School Of Medicine
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