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KAWAMOTO Ken

Faculty: Graduate School of Science and Engineering TEL: +81-48-858-3542
Position: Professor ■FAX: +81-48-858-7374
Address: 255 Shimo-okubo, Sakura-ku, Saitama, Japan 338-8570 ■Mail Address: kawamoto@mail.saitama-u.ac.jp
■Web site:

Profile

Assigned Class

Department of Civil and Environmental Engineering,Faculty of Engineering
International Institute for Resilient Society

Research Field

Geoenvironmental Engineering

Academic Societies

Academic Societies
Japan Society of Material Cycles and Waste Management
The Japanese Geotechnical Society
Japan Society of Civil Engineers
Japanese Society of Soil Physics
Japan Geoscience Union

Academic Background

Degree
Ph.D , University of Tokyo

Awards

2017 , Best Paper Award
2016 , Best Paper Award, ACEPS 2017
2007 , Saitama University President Award
2005 , Outstanding Research Award

Research Career

Research Career
2013 , Professor, Graduate School of Science and Engineering, Saitama University
2007 - 2013 , Associate Professor, Graduate School of Science and Engineering, Saitama University
1997 - 2007 , Research Associate, Faculty of Engineering, Saitama Univeristy
Other Career
2018 - 2022 , JICA Short-term expert in Vietnam
2011 - 2016 , JICA Short-term expert in Sri Lanka
2009 - 2009 , JICA Shotr-Term Expert, National University of Timor-Leste
2009 - 2009 , Visiting Professor, University of the Philippines, Diliman
Overseas Education
2005 - 2006 , Research Assistant Professor, Aalborg University, Denmark

Research

Books, Articles, etc.

Articles
Ground-penetrating radar (GPR) responses for sub-surface salt contamination and solid waste: modeling and controlled lysimeter studies
,Environ. Monit. Assess. ,189:DOI 10.1007/s10661-017-5770-4. 2017
Wijewardana, Y.N.S., A.T. Shilpadi, M.I.M. Mowjood, K. Kawamoto, and L.W. Galagedara

Microcosm experiments on a coconut-fibre biofilm treatment system to evaluate wastewater treatment efficiencies
,Int. J. GEOMATE,12(33):160-166 2017
Sato, N., W.N.K. Dharmarathne, T. Saito, H. Sato, N. Tanaka, and K. Kawamoto

Characterizing volatile organic compounds in leachate from Gohagoda municipal solid waste dumpsite, Sri Lanka
,Groundwater for Sustainable Development ,2-3:1–6. http://dx.doi.org/10.1016/j.gsd.2016.04.001. 2016
Kumarathilaka, P., Y. Jayawardhana, B.F.A. Basnayake, M.I.M. Mowjood, M. Nagamori, T. Saito, K. Kawamoto, and M. Vithanage

Pore network structure of porous media analyzed by micro-focus X-ray computed tomography and linked to particle shape and size and mass transport parameters
,Soils and Foundations,56(4):676-690 2016
Hamamoto, S., P. Moldrup, K. Kawamoto, T. Sakaki, T. Nishimura, and T. Komatsu

Characterization of temporal variations in landfill gas components inside an open solid waste dumpsite in Sri Lanka
,J. Air & Waste Manag. Assoc., 66(12):1257–1267 2016
Nagamori, M., M.I.M. Mowjood, Y. Watanabe, Y. Isobe, T. Ishigaki, and K. Kawamoto

Adsorption of Cd2+ and Pb2+ onto coconut shell biochar and biochar-mixed soil
,Environ. Earth Sci.,75:484:DOI 10.1007/s12665-015-5167-z 2016
Paranavithana, G.N., K. Kawamoto, Y. Inoue, T. Saito, M.Vithanage, C.S. Kalpage, and G. B. B. Herath. 75:484. DOI 10.1007/s12665-015-5167-z.

Temperature effects on solute diffusion and adsorption in differently-compacted kaolin clay
,Environ Earth Sci.,75:562:DOI 10.1007/s12665-016-5358-2 2016
Ei Ei Mon, S. Hamamoto, K. Kawamoto, T. Komatsu, and P. Moldrup

Temperature change affected groundwater quality in a confined marine aquifer during long-term heating and cooling
,Water Research,94:120-127 2016
Saito, T., S. Hamamoto, T. Ueki, S. Ohkubo, P. Moldrup, K. Kawamoto, and T. Komatsu

Temperature effects on geotechnical and hydraulic properties of bentonite hydrated with inorganic salt solutions
,Int. J. of GEOMATE,8(1) 2015
Rashid, H.M.A., K. Kawamoto, T. Saito, T. Komatsu, Y. Inoue, and P. Moldrup. 2015. Temperature effects on geotechnical and hydraulic properties of bentonite hydrated with inorganic salt solutions. Int. J. of GEOMATE, 8(1): 1172-1179.

Characterization of water repellency for hydrophobized grains with different geometries and sizes
,Environ. Earth Sci.,74:5525-5539 2015
Wijewardana, Y.N.S., K. Kawamoto, P. Moldrup, T. Komatsu, L.C. Kurukulasuriya, N.H. Priyankara

Geotechnical properties of Kanto alluvial soils based on geochemical survey
,GSTF International Journal of Geological Sciences (JGES),2(1) 2015
Hamamoto, S., K. Kawamoto, T. Takemura, K. Kimura, T. Komatsu, and M. Oda

Soil-water repellency characteristic curve for soil profiles with soil organic carbon gradients
,Geoderma,264:DOI:10.1016/j.geoderma.2015.10.020 2015
Wijewardana, N.S., K. Müller, P. Moldrup, B. Clothier, T. Komatsu, S. Hiradate, L.W. de Jonge, and K. Kawamoto

Assessment of inorganic pollutant contamination in groundwater using Ground Penetrating Radar (GPR)
,Tropical Agricultural Research,26(4):700-706 2015
Wijewardana, Y.N.S., L.W. Galagedara, M.I.M. Mowjood, and K. Kawamoto

The water-induced linear reduction gas diffusivity model extended to three pore regions
,Vadose Zone J.,14:doi:10.2136/vzj2015.04.0051 2015
Chamindu, D. T.K.K , L.W. de Jonge, K. Kawamoto, T. Komatsu, and P. Moldrup

Gas diffusivity and thermal properties of compost-mixed soils under variable water saturation
,GSTF International Journal of Geological Sciences (JGES),2(1):DOI: 10.5176/2335-6774_2.1.23 2015
Dilrukshi, E.A.A., K. Kawamoto, T. Saito, I. Sakaguchi, P. Moldrup, and T. Komatsu

Transport properties and pore-network structure in variably-saturated Sphagnum peat soil
,Eur. J. Soil Sci.:doi: 10.1111/ejss.12312 2015
Hamamoto, S., S.H. Dissanayaka, K. Kawamtoo, O. Nagata, T. Komatsu, and P. Moldrup

Modeling gravity effects on water retention and gas transport characteristics in plant growth substrates
,Advances in Space Research,54:797-808 2014
Chamindu, D.T.K.K., S. B. Jones , M. Tuller, L.W. de Jonge, K. Kawamoto, T. Komatsu, and P. Moldrup

Simultaneous loss of soil biodiversity and functions along a copper contamination gradients: When soil goes to sleep
,Soil Sci. Soc. Am. J.:doi:10.2136/sssaj2014.02.0052. 2014
Naveed, M. P. Moldrup, E. Arthur, M. Holmstrup, M. Nicolaisen, M. Tuller, L. Herath, S. Hamamoto, K. Kawamoto, T. Komatsu, H-J. Vogel, L.W. de Jonge

Adsorption of Cd(II) and Pb(II) humic acid treated coconut (Cocos nucifera) husk. J. Hazardous
,Toxic and Radioactive Waste, ASCE:DOI: 10.1061/(ASCE)HZ.2153-5515.0000196 2014
Sewwandi, B.G.N., M. Vithanage, S.S.R.M.D.H.R. Wijesekara, M.I.M. Mowjood, S. Hamamoto, and K. Kawamoto

Fate and transport of pollutants through a municipal solid waste landfill leachate in Sri Lanka
,Environmental Earth Sciences:DOI 10.1007/s12665-014-3075-2 2014
Wijesekara, S.S.R.M.D.H.R., S.S. Mayakaduwa, A.R. Siriwardana, N. de Silva, B.F.A. Basnayake, K. Kawamoto, and M. Vithanage

A new method to quantify how water repellency compromises soils’ filtering function
, Eur. J. Soil Sci.:DOI: 10.1111/ejss.12136 2014
Müller, K., M. Deurer, K. Kawamoto, T. Kuroda, S. Subedi, S. Hiradate, T. Komatsu, and B.E. Clothier

Temperature effects on geomechanical properties of kaolin clay: Simultaneous measurements of consolidation characteristics, shear stiffness, and permeability using a modified oedometer
,GSTF International Journal of Geological Sciences (JGES).,1(1):DOI: 10.5176/2335-6774_1.1.1 2013
Ei Ei Mon, S. Hamamoto, K. Kawamoto, T. Komatsu, and P. Moldrup.

Structure-dependent water-induced linear reduction model for predicting gas diffusivity and tortuosity in repacked and intact soil
,Vadose Zone J,12: doi:10.2136/vzj2013.01.0026 2013
Moldrup, P., D.T.K.K. Chamindu, S. Hamamoto, T. Komatsu, K. Kawamoto, D.E. Rolston, L.W. de Jonge.

Gas diffusivity-based design and characterization of greenhouse growth substrates
,Vadose Zone J.,12:doi:10.2136/vzj2013.03.0061 2013
Chamindu, D.T.K.K., P. Moldrup, M. Tuller, M. Pedersen, J.C.C. Lopez, L.W. de Jonge, K. Kawamoto, and T. Komatsu

Mini tensiometer-time domain reflectometry coil probe for measuring soil water retention properties.
,Soil Sci. Soc. Am. J.:doi:10.2136/sssaj2012.0106 2013
Subedi, S., K. Kawamoto, A.K. Karunarathna, P. Moldrup, L.W. de Jonge, and T. Komatsu

Mini tensiometer-time domain reflectometry coil probe for measuring soil water retention properties
,Soil Sci. Soc. Am. J.:doi:10.2136/sssaj2012.0106 2013
Subedi, S., K. Kawamoto, A.K. Karunarathna, P. Moldrup, L.W. de Jonge, and T. Komatsu

Contact angles of water-repellent porous media inferred by Tensiometer- TDR probe measurement under controlled wetting and drying cycles
,Soil Sci. Soc. Am. J.: doi:10.2136/sssaj2013.05.0203 2013
Subedi, S., K. Kawamoto, P. Moldrup, L.W. de Jonge, K. Müller, B.E. Clothier, and T. Komatsu

The pH dependency of 2,4-D adsorption and desorption in Andosol and Kaolinite
,Soil Sci. ,177(1):12-21 2012
Ei Ei Mon, A. Sharma, K. Kawamoto, T. Komatsu, S. Hiradate, and P. Moldrup

Unified measurement system with suction control for measuring hysteresis in soil-gas transport parameters under variable saturation
,Water Resour. Res.,48:doi:10.1029/2011WR010615 2012
Rouf, M. A., S. Hamamoto, K. Kawamoto, T. Sakaki, T. Komatsu, and P. Moldrup

Organic matter fraction dependent model for predicting the gas diffusion coefficient in variably saturated soils
,Vadose Zone J.,11:doi:10.2136/vzj2011.0065 2012
Hamamoto, S., P. Moldrup, K. Kawamoto, and T. Komatsu

Variable pore connectivity model linking gas diffusivity and air-phase tortuosity to soil matric potential
,Vadoze Zone J.,11:doi:10.2136/vzj2011.0096 2012
Chamindu, D.T.K.K., P. Moldrup, P. Schj nning, K. Kawamoto, T. Komatsu, and L.W. de Jonge

Characterizing time-dependent contact angles for sands hydrophobized with oleic and stearic acids
,Vadose Zone J.,11:doi:10.2136/vzj2011.0055 2012
Subedi, S. K. Kawamoto, and T. Komatsu, L. Jayarathna, and M. Vithanage, P. Moldrup, and L.W. de Jonge

Thermal properties of peaty soils: Effects of liquid-phase impedance factor and shrinkage
,Vadose Zone J.,11:doi:10.2136/vzj2011.0092 2012
Dissanayaka, D.M.S.H., S. Hamamoto, K. Kawamoto, T. Komatsu, and P. Moldrup

Gas dispersion in granular porous media under air-dry and wet conditions
,Soil Sci. Soc. Am. J.,76:845-852 2012
Naveed, M., S. Hamamoto, K. Kawamoto, T. Sakaki, M. Takahashi, T. Komatsu, and L.W. de Jonge, M. Lamandé, and P. Moldrup

Maxwell’s law based models for liquid and gas phase diffusivities in variably-saturated soil
,Soil Sci. Soc. Am. J.,76:1509-1517 2012
Hamamoto, S., P. Moldrup, K. Kawamoto, and T. Komatsu

Diffusion aspects of designing porous growth media for earth and space
,Soil Sci. Soc. Am. J.,76:1564-1578 2012
Chamindu, D.T.K.K, P. Moldrup, M.P. Jensen, S.B. Jones, L.W. de Jonge, P. Schjønning, K. Scow, J. W. Hopmans, D.E. Rolston, K. Kawamoto, and T. Komatsu

Predictions of soil water characteristic from soil particle volume fractions
,Soil Sci. Soc. Am. J.,76:1946-1956 2012
Naveed, M., P. Moldrup, M. Tuller, T.P.A. Ferre, K. Kawamoto, T. Komatsu, and L.W. de Jonge

Soil specific surface area and non-singularity of soil-water retention at low saturations
,Soil Sci. Soc. Am. J.,77:43-53 2012
Arthur, E., M. Tuller, P. Moldrup, A.C. Resurreccion, M.S. Medinge, K. Kawamoto, T. Komatsu, and L.W. de Jonge

Modeling air permeability in variably saturated soil from two natural clay gradients
,Soil Sci. Soc. Am. J.,77:362-371 2012
Chamindu, D.T.K.K., E. Arthur, P. Moldrup, S. Hamamoto, K. Kawamoto, T. Komatsu, and L.W. de Jonge

Correlating Gas Transport Parameters and X-ray Computed Tomography Measurements in Porous Media
,Soil Sci.,178:60-68 2012
Naveed, M., S. Hamamoto, K. Kawamoto, T. Sakaki, M. Takahashi, T. Komatsu, P. Moldrup, M. Lamandé, D. Wildenschild, M. Prodanovic, and L.W. de Jonge

Extreme compaction effects on gas transport parameters and estimated climate gas exchange for a landfill final cover soil
,J. Geotech. Geoenviron. Engrg. ,137:DOI: 10.1061/(ASCE)GT.1943-5606.0000459 2011
Hamamoto, S., P. Moldrup, K. Kawamoto, P. Wickramarachchi, M. Nagamori, and T. Komatsu.

Effects of dry bulk density and particle size fraction on gas transport parameters in variably saturated landfill cover soil
,Waste Management ,31:2462-2472 2011
Wickramarachchi, P., K. Kawamoto, S. Hamamoto, M. Nagamori, P. Moldrup, and T. Komatsu

Transport and deposition of variably-charged soil colloids in saturated porous media
,Vadose Zone J.,10:1228-1241 2011
Sharma, A., K. Kawamoto, P. Moldrup, L.W. de Jonge, and T. Komatsu

Generalized density-corrected model for gas diffusivity in variably saturated soils
,Soil Sci. Soc. Am. J.,75:1315-1329 2011
Chamindu, D.T.K.K., P. Moldrup, P. Schjonning, K. Kawamoto, T. Komatsu, L.W. de Jonge

Density-corrected models for gas diffusivity and air permeability in unsaturated soil
,Vadose Zone J.,10:226-238 2011
Chamindu, D.T.K.K., P. Moldrup, P. Schj nning, L.W. de Jonge, K. Kawamoto, and T. Komatsu.

Mobilization and leaching of natural and water dispersible colloids in aggregated volcanic ash soil columns
,Soils and Foundations,51:123-132 2011
Chamindu, D.T.K.K., K. Kawamoto, H. Saito, P. Moldrup, and T. Komatsu

Two-region extended Archie’s law model for soil air permeability and gas diffusivity
,Soil Sci. Soc. Am. J. ,75:795-806 2011
Hamamoto, S., P. Moldrup, K. Kawamoto, L.W. de Jonge, P. Schj nning, and T. Komatsu

Relationship between specific surface area and the dry end of the water retention curve for soils with varying clay and organic carbon contents
,Water Resour. Res.,47:doi:10.1029/2010WR010229 2011
Resurreccion, A.C., P. Moldrup, M. Tuller, T. Ferre, K. Kawamoto, T. Komatsu, and L.W. de Jonge

Transport and deposition of suspended soil colloids in saturated sand columns
,J. Hazardous, Toxic and Radioactive Waste,15:275-284 2011
Sharma, A., K. Kawamoto, P. Moldrup, L.W. de Jonge, and T. Komatsu

Gas transport parameters for compacted reddish brown soil in Sri Lankan landfill final cover
,J. Hazardous, Toxic and Radioactive Waste ,15:285-295 2011
Wickramarachchi, P., K. Ranasinghe, S. Hamamoto, K. Kawamoto, U.P. Nawagamuwa, P. Moldrup, and T. Komatsu

A simple Beta-function model for soil-water repellency as a function of water content and organic carbon contents
,Soil Sci.,175:461-468 2010
Karunarathna, A.K., K. Kawamoto, P. Moldrup, L.W. de Jonge, and T. Komatsu

Estimating hysteretic soil-water retention curves in hydrophobic soil by a mini tensiometer-TDR coil probe
,Proceedings of the 19th World Congress of Soil Science, Soil Solutions for a Changing World:58-61 2010
Karunarathna, A.K., T. Chhoden, K. Kawamoto, T. Komatsu, P. Moldrup, L.W. de Jonge

Excluded-volume expansion of Archie's law for gas and solute diffusivities and electrical and thermal conductivities in variably-saturated porous media
,Water Resour. Res.,46 2010
Hamamoto, S., P. Moldrup, K. Kawamoto, and T. Komatsu

Measurement of gas transport parameters for final cover soil at Maharagama landfill in Sri Lanka
,Proceedings of the 19th World Congress of Soil Science, Soil Solutions for a Changing World:49-52 2010
Wickramarachchi, P., K. Ranasinghe, U. P. Nawagamuwa, K. Kawamoto, S. Hamamoto, P. Moldrup, and T. Komatsu

Mobilization and transport of natural and water dispersible colloids in repacked Okinawa red-yellow soil columns
,Proceedings of the 19th World Congress of Soil Science, Soil Solutions for a Changing World:53-56 2010
Sharma, A., T. Hirata, K. Kawamoto, D.T.K.K. Chamindu, P. Moldrup, and T. Komatsu

Study on gas transport and water retention in landfill cover soil: A Sri Lankan case study
,Proceedings of the 6th International Congress on Environmental Geotechnics (6ICEG):426-430 2010
Ranasinghe, R.H.K., U. P. Nawagamuwa, P.N. Wickramarachchi, K. Kawamoto, and T. Komatsu

The gas-diffusivity-based Buckingham tortuosity factor from pF 1 to 6.91 as a soil structure fingerprint
,Proceedings of the 19th World Congress of Soil Science, Soil Solutions for a Changing World,9:76-79 2010
Chamindu D.T.K.K., P. Moldrup, S. Yoshikawa, K. Kawamoto, T. Komatsu, and D.E. Rolston

Two-region model for soil-water repellency as a function of matric potential and water content
,Vadose Zone J.:719-730 2010
Karunarathna, A.K., P. Moldrup, K. Kawamoto, L.W. de Jonge, and T. Komatsu

Adsorption of 2,4-dichlorophenoxyacetic acid onto volcanic ash soils: Effects of pH and soil organic matter
,EnvironmentAsia,2(1):1-9 2009
Ei Mon, E., T. Hirata, K. Kawamoto, S. Hiradate, T. Komatsu, and P. Moldrup

Effect of particle size and soil compaction on gas transport parameters in variably saturated, sandy soils
,Vadose Zone J.,8(4):986-995 2009
Hamamoto, S., P.Moldrup, K.Kawamoto, and T.Komatsu

Gas diffusion coefficient in variably saturated peat soil: Measurements and test of prediction models
,Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils:697-701 2009
Kawamoto, K., M.Unno, K.Iiduka, P.Moldrup, and T.Komatsu

Hierarchical, bimodal model for gas diffusivity in aggregated, unsaturated soils
,Soil Sci. Soc. Am. J.,74(2):481-491 2009
Resurreccion, A.C., P.Moldrup, K.Kawamoto, S.Hamamoto, D.E.Rolston, and T.Komatsu

The solute diffusion coefficient in variably compacted, unsaturated volcanic ash soils
,Vadose Zone J.,8(4):942-952 2009
Hamamoto, S., M.S.A.Perera, A.C.Resurreccion, K.Kawamoto, S.Hasegawa, T.Komatsu, and P.Moldrup

Unified measurement system for the gas dispersion coefficient, air permeability and gas diffusion coefficient in variably saturated soil
,Soil Sci. Soc. Am. J.,73(6):1921-1930 2009
Hamamoto, S., P.Moldrup, K.Kawamoto, T.Komatsu, and D.E.Rolston

Linear model to predict soil-gas diffusivity from two soil-water retention points in unsaturated volcanic ash soils
,Soils and Foundations,48(3):397-406 2008
Resurreccion, A.C., T. Komatsu, K. Kawamoto, M. Oda, S. Yoshikawa, and P. Moldrup

Useful soil-water repellency indices: Linear correlations
,Soil Sci.,173(11):747-757 2008
Regalado, C.M., A. Ritter, L.W. de Jonge, K. Kawamoto, T. Komatsu, and P. Moldrup

Variable pore connectivity factor model for gas diffusivity in unsaturated, aggregated soil
,Vadose Zone J.,7(2):397-405 2008
Resurreccion, A.C., P. Moldrup, K. Kawamoto, S. Yoshikawa, D.E. Rolston, and T. Komatsu

Gas diffusivity and air permeability in a volcanic ash soil profile: Effects of organic matter and water retention
Lippincott Williams & Wilkins,Soil Sci.,172(6):432-443 2007
Resurreccion, A.C., K. Kawamoto, T. Komatsu, P. Moldrup, K. Sato, and D.E. Rolston

Gas transport parameters along field transects of a volcanic ash soil
,Soil Sci.,172(1):3-16 2007
Resurreccion, A.C., K. Kawamoto, T. Komatsu, P. Moldrup, N. Ozaki, and D.E. Rolston

Water repellency of aggregate size fractions of a volcanic ash soil
,Soil Sci. Soc. Am. J.,71:1658-1666 2007
Kawamoto, K., P. Moldrup, T. Komatsu, L.W. de Jonge, and M. Oda

Gas transport parameters in the vadose zone: Development and tests of power-law models for air permeability
,Vadose Zone J.,5:1205-1215 2006
Kawamoto, K., P. Moldrup, P. Schjønning, B.V. Iversen, T. Komatsu, and D.E. Rolston

Gas transport parameters in the vadose zone: Gas diffusivity in field and lysimeter soil profiles
,Vadose Zone J.,5:1194-1204 2006
Kawamoto, K., P. Moldrup, P. Schjønning, B.V. Iversen, D.E. Rolston, and T. Komatsu

Linking the Gardner and Campbell models for water retention and hydraulic conductivity in near-saturated soil
Lippincott Williams & Wilkins,Soil Sci.,171(8):573-584 2006
Kawamoto, K., P. Moldrup, T.P.A. Ferré, M. Tuller, O.H. Jacobsen, and T. Komatsu

Moisture structures of laterally expanding fingering flow in sandy soils
Elsevier B.V.,Geoderma,119(3-4):197-217 2004
Kawamoto, K., S. Mashino, M. Oda, and T. Miyazaki

Microstructural interpretation on reliquefaction of saturated granular soils under cyclic loading
,J. Geotech. Geoenviron. Engrg. Div. ASCE,127(5):416-423 2001
Oda, M., K. Kawamoto, K. Suzuki, H. Fujimori, and M. Sato

Hydro-geological study of landslides caused by heavy rainfall on August 1998 in Fukushima, Japan
,Journal of Natural Disaster Science,22(1):13-23 2000
Kawamoto, K., M. Oda, and K. Suzuki

Fingering flow in homogeneous sandy soils under continuous rainfall infiltration
,Soils and Foundations,39(4):79-91 1999
Kawamoto, K., and T. Miyazaki

Research Activities

Journal Editorial Board
2016- , Soils and Foundations , Executive Board Member

Education

Lectures

2018 , Geomechanics I
2018 , Geoenvironmental Engineering
2018 , Environmental Geotechnical Engineering

Admission of International Students

2018 , First Term:4 , Second Term:4