学位論文 Gas Transport and Thermal properties of Compost-Mixed Landfill Cover Soils under Variable Water Saturation

EKANAYAKA ACHCHILLAGE AYESHA DILRUKSHI

内容記述
主指導教員 : 川本健
ACKNOWLEDGEMENTS iTABLE OF CONTENTS iiLIST OF FIGURES ivLIST OF TABLES viCHAPTER 1: GENERAL INTRODUCTION .................................................................... 11.1 THE SCOPE AND THE OBJECTIVES OF THE STUDY .......................................................... 41.2 REFERENCES ................................................................................................................ 6CHAPTER 2: THE KINETICS OF METHANE OXIDATION FOR COMPOST-MIXED SOILS ...................................................................................................................................... 92.1 INTRODUCTION ............................................................................................................ 92.2 MATERIALS AND METHODS ....................................................................................... 102.2.1 Batch Experimental Procedure ........................................................................... 112.2.2 Headspace Gas Analysis .................................................................................... 122.3 RESULTS AND DISCUSSION ........................................................................................ 131.1.1 Moisture Effect on Biological Kinetics of Methane Oxidation ......................... 132.3.1 Biological Kinetics Of Methane Oxidation ........................................................ 142.3.2 CH4 Oxidation Rate of Pure Compost, Compost-Soil Mixture and Landfill Cover Soil ...................................................................................................................... 152.4 CONCLUSION ............................................................................................................. 202.5 REFERENCES .............................................................................................................. 20CHAPTER 3: GAS AND HEAT TRANSPORT PROPERTIES OF COMPOST-MIXED SOILS .................................................................................................................................... 233.1 INTRODUCTION .......................................................................................................... 233.2 MATERIALS AND METHODS ....................................................................................... 253.1.1 Materials Used .................................................................................................... 253.1.2 Sample Preparation for Measuring Water Retention, Gas and Heat Transport Parameters ..................................................................................................................... 283.1.3 Measurement of Gas Diffusion Coefficient and Thermal Properties ................. 293.1.4 Models for Water Retention, Gas and Heat Tranport Parameters ...................... 303.2 RESULTS AND DISCUSSION ........................................................................................ 323.2.1 Water Retention Characteristics ......................................................................... 323.2.2 Soil-gas Diffusivity ............................................................................................ 343.2.3 Thermal Conductivity and Heat Capacity .......................................................... 383.3 CONCLUSIONS ............................................................................................................ 413.4 REFERENCES .............................................................................................................. 43CHAPTER 4: PREDICTIVE MODELS FOR GAS DIFFUSIVITY AND THERMAL PROPERTIES ...................................................................................................................... 464.1 INTRODUCTION .......................................................................................................... 464.2 MATERIALS AND METHODS ....................................................................................... 474.2.1 Predictive models for gas diffusivity in repacked soils ...................................... 484.2.2 Predictive models for thermal properties ........................................................... 494.2.3 Sensitivity Analysis of the models ..................................................................... 504.3 RESULTS AND DISCUSSIONS ....................................................................................... 514.3.1 Model performance of the predictive models for gas diffusivity ....................... 514.3.2 Prediction of thermal properties ......................................................................... 534.4 CONCLUSIONS ............................................................................................................ 574.5 REFERENCES .............................................................................................................. 57CHAPTER 5: SUMMARY, CONCLUSIONS, AND PERSPECTIVES ........................ 605.1 SUMMARY AND CONCLUSIONS ................................................................................... 605.2 PERSPECTIVES ............................................................................................................ 63
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