Hettiarachchi, Hiroshan

Academic Officer

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  • Hiroshan Hettiarachchi
    INSTITUTE:
    UNU-FLORES
    OFFICE:
    UNU-FLORES, Ammonstrasse 74, Dresden, 01067, Germany
    E-MAIL:
    hettiarachchi@unu.edu
    PHONE:
    +49 (0) 351 8921 9379
    NATIONALITY:
    USA

    Research Interests

    • Engineering properties and behavior of soils
    • Geotechnical properties of municipal solid waste
    • Integrated management of water, soil, and waste
    • Safe use of wastewater in agriculture
    • Settlement and stability of landfills
    • Sustainable solid waste management practices

    Education

    • Doctor of Philosophy in Civil Engineering, New Jersey Institute of Technology, USA
    • Master of Engineering in Geotechnical Engineering, Asian Institute of Technology, Thailand
    • Bachelor of Science in Civil Engineering, University of Moratuwa, Sri Lanka

    Biographical Statement

    Hiroshan Hettiarachchi is a Civil Engineering Professor from the United States. He contributed to UNU-FLORES activities since 2013 and in 2014 he joined UNU-FLORES as the Head of Unit – Waste Management. He also took a leading role in establishing the UNU-FLORES PhD Program which is offered jointly with the Technische Universität Dresden, Germany, and was the Program Coordinator until 2016. Before joining UNU, Prof. Hettiarachchi previously served at the Lawrence Technological University, in Michigan, USA, where he held the position of Director of Civil Engineering Graduate Programs from 2010 to 2013. He was also a Visiting Professor at the University Calgary, Alberta, Canada in 2013.

    Prof. Hettiarachchi’s current research focus is mainly on sustainable management of solid waste and wastewater. His past research has resulted in number of publications covering geotechnical properties and behavior of soils and waste and settlement behavior of landfills.

  • Articles

    • Sallwey, Jana, Hettiarachchi, Hiroshan and Hülsmann, Stephan (2017). Challenges and Opportunities in Municipal Solid Waste Management in Mozambique: A Review in the Light of Nexus Thinking. AIMS Environmental Science, 4(5), 621-639
    • Bardi, Ugo, Jakobi, Rolf and Hettiarachchi, Hiroshan (2016). Mineral Resource Depletion: A Coming Age of Stockpiling?. BioPhysical Economics and Resource Quality, 1(1), 1-9
    • Meegoda, J.N., Bhuvaneshwari, S., Hettiaratchi, P.A., and Hettiarachchi, H. (2016). “A comprehensive model for anaerobic degradation in bio-reactor landfills,” Special Thematic Issue on Greenhouse Gas Emission Reduction using Biological Methods, Journal of Current Environmental Engineering, DOI: 10.2174/2212717803666160729114117, Vol. 3, No. 2.
    • Reddy, Krishna R., Hettiarachchi, Hiroshan, Giri, Rajiv K. and Gangathulasi, Janardhanan (2015). Effects of Degradation on Geotechnical Properties of Municipal Solid Waste from Orchard Hills Landfill, USA. International Journal of Geosynthetics and Ground Engineering, 1(3), 1-14
    • Hettiaratchi, Joseph P.A., Hettiarachchi, Hiroshan, Meegoda, Jay N. and Hunte, Carlos A. (2013). Operation of a Landfill Bioreactor in a Cold Climate: Early Results and Lessons Learned. Journal of Hazardous, Toxic and Radioactive Waste, 17(4), 307-316
    • McClerren, M.A., Hettiarachchi, H., and Carpenter, D. (2012). “An Investigation on Erodibility and Geotechnical Characteristics of Fine Grained Fluvial Soils from Lower Michigan,” Geotechnical and Geological Engineering Journal, 30 (4), 881-892, DOI: 10.1007/s10706-012-9507-4.
    • Hunte, C., H. Hettiarachchi, J.N. Meegoda, and J.P.A. Hettiaratchi (2012). “The City of Calgary Biocell Landfill: Data Collection and Settlement Predictions using a Multiphase Model.” Geotechnical Special Publication No. 225, ISBN 978-0-7844-1212-1.
    • Hettiarachchi, H (2012). “Settlement Behavior of Bioreactor Landfills in North America.” Geotechnical Special Publication No. 225, ISBN 978-0-7844-1212-1.
    • Advances in Environmental Geotechnics: A special issue of International Journal of Environmental Research and Public Health (2011), edited by H. Hettiarachchi, ISSN 1660-4601, MDPI Publishing, Basel, Switzerland.
    • Hunte, C., J.P.A. Hettiaratchi, J.N. Meegoda, and H. Hettiarachchi (2011). “Performance of a Waste Cell in Cold Climate Operated as an Anaerobic Landfill Bioreactor.” Geotechnical Special Publication No. 211, ISBN 978-0-7844-1165-0.
    • Hettiarachchi, H. and Thani, J. (2011). “Variation of shear strength properties with the organic fraction in unsaturated synthetic municipal solid waste,” Geotechnical Special Publication No. 211, ISBN 978-0-7844-1165-0.
    • Moran, A.R. and Hettiarachchi, H. (2011). “Geotechnical Characterization of Mined Clay from Appalachian Ohio: Challenges and Implications on Clay Mining Industry,” International Journal of Environmental Research and Public Health: Special Issue on Advances in Environmental Geotechnics, ISSN 1660-4601, MDPI Publishing, Basel, Switzerland.
    • Reddy, K.R., H. Hettiarachchi, J. Gangathulasi, and J. Bogner (2011). “Geotechnical properties of municipal solid waste at different phases of biodegradation.” Waste Management Journal, Elsevier Publications, 31(11), 2275-2286.
    • Murley, S.C. and Hettiarachchi, H. (2011). “Predicting Shear Strength Properties for Low-Sensitivity Granular-Cohesive Soils from SPT Results,” Geotechnical Special Publication No. 211, ISBN 978-0-7844-1165-0.
    • Hunte, C., J.P.A. Hettiaratchi, H. Hettiarachchi and J.N. Meegoda (2011). “Determination of Waste properties from Settlement Behaviour of a Full Scale Waste Cell operated as a Landfill Bioreactor.” Geotechnical Special Publication No. 211, ISBN 978-0-7844-1165-0.
    • Hettiarachchi, H. (2010). “Closure to “Use of SPT Blow Counts to Estimate Shear Strength Properties of Soils: Energy Balance Approach” by H. Hettiarachchi and T. Brown.” ASCE Journal of Geotechnical & Geoenvironmental Engineering, 136(11), 1587.
    • McClerren, M.A., Hettiarachchi, H., and Carpenter, D. (2010). “Laboratory and Field Investigation on Variation of Erodibility with Dry Unit Weight of Different Soils,” ASCE Geotechnical Special Publication No. 199, ISBN 978-0-7844-1095-0.
    • Moran, A.R. and Hettiarachchi, H. (2010). “Particle Size Analysis of Shale-rich Mined Clay from Appalachian Ohio,” ASCE Geotechnical Special Publication No. 199, ISBN 978-0-7844-1095-0.
    • Reddy, K.R., H. Hettiarachchi, N. Parakalla, J. Gangathulasi, and J. Bogner (2009). “Geotechnical Properties of Fresh Municipal Solid Waste at Orchard Hills Landfill.” Waste Management Journal, Elsevier Publications, 29(2), 952-959.
    • Reddy, K.R., H. Hettiarachchi, J. Gangathulasi, J. Bogner, and T. Lagier (2009). “Geotechnical Properties of Synthetic Municipal Solid Waste,” International Journal of Geotechnical Engineering, J.Ross Publishing, 3(3), 429-438.
    • Reddy, K.R., H. Hettiarachchi, N. Parakalla, PJ. Gangathulasi, J. Bogner, and T. Lagier (2009). “Hydraulic Conductivity of Municipal Solid Waste in Landfills.” ASCE Journal of Environmental Engineering. 135(8), 677-683.
    • Hettiarachchi, H., J. Meegoda, and P. Hettiaratchi (2009). “A model to predict settlements and landfill gas generation in bioreactor landfills coupled with gas generation and moisture distribution.” Waste Management Journal, Elsevier Publications, 29(3), 1018-1025.
    • Hettiarachchi, H. and Ge, L. (2009). “Use of Geogrids to Enhance Stability of Slope in Bioreactor Landfills: A Conceptual Method,” ASCE Geotechnical Special Publication No. 187, ISBN 978-0-7844-1023-3.
    • Hettiarachchi, H. and T. Brown (2009). “Use of SPT Blow Counts to Estimate Shear Strength Properties of Soils: An Energy Balance Approach.” ASCE Journal of Geotechnical & Geoenvironmental Engineering, 135(6), 830-834.
    • Reddy, K.R., H. Hettiarachchi, J. Gangathulasi, N. Parakalla, J. Bogner, and T. Lagier (2009). “Compressibility and Shear Strength of Landfillled Municipal Solid Waste at Orchard Hills Landfill.” Waste Management & Research, 27(6), 578–587.
    • Brown, T. and H. Hettiarachchi (2008). “Estimating Shear Strength Properties of Soils Using SPT Blow Counts: An Energy Balance Approach.” ASCE Geotechnical Special Publication No. 179, ISBN 978-0-7844-0972-5.
    • Reddy, K.R., J. Gangathulasi, H. Hettiarachchi, and J. Bogner (2008). “Geotechnical Properties of Municipal Solid Waste Subjected to Leachate Recirculation.” ASCE Geotechnical Special Publication No. 177, ISBN 978-0-7844-0970-1.
    • Hunte, C., J.P.A. Hettiaratchi, J.N. Meegoda, and C.H. Hettiarachchi (2007). “Settlement of bioreactor landfills during filling operations.” ASCE Geotechnical Special Publication No. 163, ISBN 978-0-7844-0907-7.
    • Hettiarachchi, C.H., J.N. Meegoda and J.P.A Hettiaratchi (2007). “Prediction of waste settlement in bioreactor landfills incorporating waste biodegradation.” ASCE Geotechnical Special Publication No. 163, ISBN 978-0-7844-0907-7.
    • Hettiarachchi, C.H., J.N. Meegoda, J. Tavantzis, and J.P.A Hettiaratchi (2006). “A Numerical Model to Predict Settlements and Gas Generation in Bioreactor Landfills.” Journal of Hazardous Materials, 139(3), 514-522.
    • Hettiarachchi, C.H., Meegoda, J.N., and Hettiaratchi, J.P. (2005). “Towards a fundamental model to predict the settlements in bioreactor landfills.” ASCE Geotechnical Special Publication No. 142. ISBN 978-0-7844-0769-1.
    • Meegoda, J.N., G.M. Rowe, A.A. Jumikis, C.H. Hettiarachchi, N.Bandara, and N.C. Gephart (2005). “Estimation of Surface Macrotexture in Hot Mix Asphalt Concrete Pavement using Laser Texture Data,” ASTM Journal of Testing and Evaluation. 33(5), 1-11.
    • Rowe, G.M., J.N. Meegoda, A.A. Jumikis, M.J. Sharrock, N.Bandara, and C.H. Hettiarachchi (2004). “NJTxtr -A Computer Program based on LASER to Monitor Asphalt Segregation,” ASCE Journal of Construction Engineering and Management, 130(6), 924-934.
    • Meegoda, J.N., G.M. Rowe, A.A. Jumikis, N.Bandara, C.H. Hettiarachchi, and N. Gephart (2003). “Detection of Segregation using LASER,” Transportation Research Record, TRB, National Research Council, Washington DC.

    Books

    Book Chapters

    • Meegoda, Jay N., Hettiarachchi, Hiroshan and Hettiaratchi, Joseph Patrick, “Landfill Design and Operation” in Sustainable Solid Waste Management, ed. Wong, Jonathan W. C., Surampalli, Rao Y., Zhang, Tian C., Tyagi, Rajeshwar D. and Selvam, Ammaiyappan ( Reston: American Society of Civil Engineers,2016), 577-604.
    • Hettiarachchi, H. and Ardakanian, R. (2016). “Chapter 1: Managing water, soil, and waste in the context of global change in Environmental Resource Management and Nexus Approach,” ISBN 978-3-319-28593-, Springer Nature, Switzerland.

    Conference Publications

    • Hettiarachchi, H. (2016). “Waste Management in a Water-Soil-Waste Nexus,” Waste Management Symposium, Port Said University, Port Said, Egypt.
    • Seebaluck, V., Ito, M., and Hettiarachchi, H. (2015). “Options for producing treated wastewater for agricultural applications: The Mauritius case study,” Dresden Nexus Conference 2015, Dresden, Germany.
    • Mati, B., Cumbane, A., Messo, J., Nyang’au, W.O., Pondja, E., Cassimo, Y., Montani, K., Ito, M., and Hettiarachchi, H. (2015). “Assessment of Constructed Wetlands for the Treatment of Wastewater for Peri-Urban Irrigation in Kenya and Mozambique,” Dresden Nexus Conference 2015, Dresden, Germany.
    • Julies, E., Alema, A., Smith, B., Gebrekidanasgedom, A., Zenebe, G., Ito, M., Hettiarachchi, H. (2015). “Application of Bioaugumentation for safe and sustainable reuse of wastewater: case studies in Namibia and Ethiopia,” Dresden Nexus Conference 2015, Dresden, Germany.
    • Hettiarachchi, H. (2014). “From dumps to nexus approach: Historical perspective of waste management,” 2011 Bonn Nexus Conference, Bonn, Germany.
    • Silva, R. and Hettiarachchi, H. (2014). “Challenges and opportunities for Integrated Solid Waste Management in Latin America and the Caribbean,” 5th IUH Conference on Science and Engineering (IUHCSE), Industrial University of HoChi Minh City, Ho Chi Minh City, Vietnam.
    • Yuen, S., Meegoda, J., and Hettiarachchi, H. (2014). “A Concept Paper on Phytocap Technology for Sustainable Waste Containment,” 8th Intercontinental Landfill Research Symposium (ICLRS), Crystal River, FL.
    • Meegoda, J.N, S. Bhuvaneshwari, P.A. Hettiaratchi, and H. Hettiarachchi (2013), “A Comprehensive Model for Anaerobic Degradation in Bio-Reactor Landfills,” International Conference on Case Histories in Geotechnical Engineering. Session 06/Paper 2, Missouri University of Science and Technology, Rolla, MO. http://scholarsmine.mst.edu/icchge/7icchge/session_06/02.
    • Hettiarachchi, V., Hettiaratchi, P., Hettiarachchi, H. (2012). “Application of Field-Scale Methane Biofiltration Systems to Mitigate Low Volume Methane Emissions.” 12th International Environmental Specialty Conference, CSCE 2012, June 6-9, 2012, Edmonton, Canada.
    • Hettiarachchi, H. (2011). “Settlement Behavior of Bioreactor Landfills and Challenges in Settlement Modeling,” International Session on Environmental Geotechnics at the Japanese Geotechnical Society Symposium, University of Kyoto, Japan, October 2011.
    • Hettiarachchi, H. (2011). “Geoenvironmental Engineering: Current Status, Challenges, Opportunities and Potantial US-Japan Colloboration,” Whitepaper, Presented at the 2nd US-Japan Geoenvironmental Engineering Workshop, Kyoto, Japan, Japan.
    • Tocco, J.V., Carpenter, D., and Hettiarahchi, H. (2010). “Direct assessment of student program outcomes utilizing rubris in the senior capstone projet.” ABET Symposium, Las Vegas, NV.
    • Hettiarachchi, C.H., J.N. Meegoda and J.P.A Hettiaratchi (2007). “A model to predict settlements and landfill gas generation in bioreactor landfills.” The 22nd International Conference on Solid Waste Technology and Management, Philadelphia, PA.
    • Hettiarachchi, C.H., J.N. Meegoda, and J.P.A Hettiaratchi (2006). “A Numerical Model to Predict Settlements and Moisture Distribution in Bioreactor Landfills.” Proceedings of CSCE 2006 conference, Calgary, Canada
    • Hettiarachchi, C.H., J. Tavantzis, J.N. Meegoda and J.P.A Hettiaratchi (2005). “A Numerical Model to Predict Settlements and Gas Generation in Bioreactor Landfills.” WasteEng’05: First international conference on Engineering for waste treatment, Albi, France.
    • Hettiarachchi, H. (2005). “Mechanics of Biocell Landfill Settlements,” Doctoral Student Research in Transportation Geotechnics (5th forum): 84th Annual Transportation Research Board (TRB) Meeting, Washington DC, January 09, 2005.
    • Hettiarachchi, C.H., J.N. Meegoda and J.P.A Hettiaratchi (2004). “A model based on mechanics to predict settlements in bioreactor landfills.” Proc. Fifth international conference on case histories in geotechnical engineering, New York, NY.
    • Rowe, G.M., J.N. Meegoda, A.A. Jumikis, M.J. Sharrock, N.Bandara, and C.H. Hettiarachchi (2002). “Detection of Segregation in Asphalt Pavement Materials using ARAN Profile System,” Pavement Evaluation 2002 Conference, Roanoke, VA.

    Conference Proceedings

    Reports