
Proceedings of
24th International Conference on
Solid Waste Technology and Management
Philadelphia, PA USA
March 15 - 18, 2009
TABLE OF CONTENTS
SESSION 1A
Recycling Case Studies
Calculating Recycling Rates for an Acute General Hospital
Anne
C. Woolridge, UK
Is Recycling Garbage? – The Barry University Sequel
Anita Závodská, USA
Biobased Products from Residual Biomasses
Enzo Montoneri, Vittorio Boffa, Piero Savarino, Daniele G. Perrone,
Luisa Garlasco, Marzia Ghezzi, Stig A. Gundersen, Ashok M. Raichur, Italy
SESSION 1B
Innovative Technologies 1
Use of Anaerobic Digestion Gases in Solid Oxide Fuel Cells for
the Production of Heat and Power – Challenges and Sizing Issues
E.
Agante, D. J. L. Brett, N. P. Brandon, UK
Interactive Odor & Particulate Control
Robert Richardson, USA
SESSION 1C
Landfill Liners
Innovative Landfill Closures
Alfred M. Yates, USA
Bentonite Microstructure Formation in Clay Liners
Nikol Kochmanova, Hiroyuki Tanaka, Japan
Geotechnical Aspects Of Ankara Clay As A Compacted Landfill Liner Material
Haluk Akgun,Turkey
SESSION 1D
Waste Generation and Composition
Solid Waste Crisis in Nigeria – A Preliminary Comparative
Study on Residential Solid Waste Generation and Management in Lagos and Benin
Metropolis
Dennis Iyeke Igbinomwanhia, Ejovo Nena Ohwovoriole, Nigeria
Measuring Productivity and Efficiency of Portuguese Solid Waste Utilities
P.
Simões, R. C. Marques, Portugal
SESSION 2A
Recycling Technologies
Separation of Granulated Mixtures of Plastics from WEEE
M.
Teresa Carvalho, João Tiago Santos, Célia Ferreira, Portugal
Recovery Of Waste Products Resulting From Post-Consumer Tyres Processing
Giuseppe Bonifazi, Silvia Serrant, Italy
Fiber Recovery From Recycling Aseptic Waste Pack
Salah El-Haggar, Eiman Hamdy, Egypt
Copper Slag As An Alternative Material For Road Construction
Vasant G. Havanagi A.K.Sinha, P.S.Prasad, Sitaramanjaneyulu, Sudhir Mathur ,
India
SESSION 2B
Integrated Management Studies
Industrial Engineering And Its Applications In Solid Waste
Minimization
Jenny Ulloa, Matthew
Franchetti, USA
A Study on Solid Waste Management Practices in Historical City of Patna,
India-Impact on Communities and Social Spaces
Shailendra Kumar
Mandal, Surendra Kumar, India
Driving The Waste Prevention Agenda: An Evaluation Of Weighing Kerbside
Household Waste Arisings Methodology In Doreset, UK
Paul Phillips, UK
Technical, Economical and Social Solutions for Integrated and Sustainable
Waste Management Systems in Rural Areas in Romania
Alexei Atudorei,
Luminita Gabriela Atudorei, Elena Dumitru, Valentin Rusu, Romania
Evaluating Solid Waste Management Alternatives Using Fuzzy Multicriteria
Decision Analysis
Shoou-Yuh Chang,
Francis Eshum, USA
Solid Waste Crisis In Nigeria – A Case Study Of The Constraint To Residential
Solid Waste Disposal And Management In Benin Metropolis
Dennis Iyeke
Igbinomwanhia, Ejovo Nena Ohwovoriole, Nigeria
SESSION 2C
Food and Organic Wastes
Authoring Best Practice Guides For Regulators And Industry
Georgina Davis, Australia
Development and Preliminary Evaluation of a Commercial Duty Composting System
Michael A. Aloria, Philippines
Development of Bagasse Pelletizer
Donnalyn C. Cabaces, Coleen M. Pernes, Mary Grace Bahillo, Timothy Joseph
Dalanon, Philippines
Removal Of Copper From Aqueous Solutions Using Walnut Shells
Sama
Alkarmy, Lua’y Zeatoun, Bayan Jodeh, Jordan
SESSION 2D
Contaminated Disposal Sites
Physicochemical Water Quality Seasonal Variations of the Salhad Stream, South
Abbottabad, North Pakistan
Farhana Maqbool, Amir Haider Malik, Zulfiqar Ahmed Bhatti, Arshid Pervez,
Pakistan
Bioremediation Of A Cr(VI) Contaminated Site: A Conceptual And Feasibility
Study For A Site In Brits
Pulane E. Molokwane , Evans M.N. Chirwa, South Africa
Effect of Solid Waste Disposal on the Microbiological Water Quality of Salhad
Stream South Abbottabad, North Pakistan
Farhana Maqbool, Amir Haider Malik, Arshid Pervez, Zulfiqar Ahmed Bhatti,
Pakistan
Correlation Between Physical Chemical Properties Of Different Venezuelan
Crude Oils And Their Biodegradability
Elena U. Ehrmann, Carmen Infante, Héctor Martínez, Venezuela
Study on BTX Volatilization and Biodegradation for Remediation of Illegal
Dumping Sites by an Air Injection Method
Kazuei Ishii, Toru Furuichi, Noboru Tanikawa, Japan
SESSION 3A
Agricultural Wastes
Utilizing of Sugarcane Baggase for Producing Useful Chemicals
Chizuru Sasaki, Yuya Yamashita, Yoshitoshi Nakamura, Japan
The Effects of Organic Wastes on Sodosols in Tasmania, Australia
Stephen Ives, Bill Cotching, Leigh Sparrow, Shaun Lisson, Richard Doyle,
Australia
Practicality of a High Value-Added Edible Mushroom Using Sweet Potato Shochu
Lees
Masahito Yamauchi, Masayoshi Yamada, Sumio Masuda, Megumi Mihara, Mariko
Sakamoto and Tadahiro Matsuda, Japan
SESSION 3B
Landfill Leachate Studies
Evapotranspirative, Soil-plant Systems with Reed (Phragmites
australis) for Landfill Leachate Treatment – Two Years Operational Experiences
Andrzej Bialowiec, Slawomir Kasinski, Poland
Microbiological Indicators Of Well Water Pollution And Probability For
Cholera
Outbreaks And Other Diseases: The Case Of Some Neighbourhoods In The City Of Douala Cameroon
Epule Terence Epule, Balgah Sounders Nguh, Sweden
SESSION 3C
Recycling Studies
Recycling: Economic Profitability of the Plant Responsible for
Processing Waste into Secondary Materials
Mohamed Alwaeli, Poland
Design and Management of Low Strength Recycle Material
Hao-Hsien Chen, Jyh-Dong Lin, Hui-Mi Hsu, Jyh-Tyng Yau, Taiwan, R.O.C.
An Economic And Operational Analysis Framework And Assessment Tool For
Government Owned Material Recovery Facilities
Matthew Franchetti, USA
The Potential Application of Sulfonated Polystyrene (SPS) from Recycled
Styrofoam in the Reduction of Heavy Metals in Wastewater
Sharon M. Manalac, Antonio E. Senador Jr., Angela D. Escoto, Philippines
Recycled Waste Paper and the Corrugated Packaging Industry in Europe
Stergios Adamopoulos, Costas Passialis, Elias Voulgaridis, Greece
SESSION 3D
Innovative Technologies 2
Adsorption of Chromium (VI) by Metal Hydroxide Sludge from the
Metal Finishing
Loïc Perrin, Valérie
Laforest, Marie De Roy, France
Nuclear Waste Minimisation For New Generation Nuclear Reactors – Carbon-14
Bioseparation
Evans M. N. Chirwa,
Pulane E. Molokwane, South Africa
SESSION 3E
Thermal Treatment and Energy
Microwave drying of moisture-rich solid wastes
Richard
Marsh, James Tiernan, Tony Griffiths, United Kingdom
Physiological Appoach Of Municipal Solid Waste To Biogas Leading To Low Cost
Energy Generation
A.P.Verma, Uma K.Verma, India
Sludge Dryer Wet Scrubber Used to Produce Renewable Energy
Andrew Bartocci, USA
Quantification of products from thermal decomposition of solid wastes
Richard Marsh, Julian Steer, United Kingdom
SESSION 4A
Community Behavior and Education
Who Are Waste Managers: A Story Of Constructed Identities And
Professional Training And Educational Opportunities
Georgina Davis,
Australia
Transforming Solid Waste into Learning Experiences
Adam Buckingham,
New Zealand
Women Participation in Municipal Solid Waste Sorting and Recycling
Mervat El-Hoz, Lebanon
SESSION 4B
Industrial Wastes Management and Use
Study of Two Sampling Procedures for the Valorization of Metal
Hydroxide Sludge as Pollutant Trapper
Valerie Laforest, Loic Perrin,
Jacques Bourgois, France
Mechanisms Of Spinels Formation From Waste Metal Solids To Ceramic Products
Kaimin Shih, Hong Kong, China
Utilization of Hazardous Anode Mud Generated During Zinc Electrowinning to
Make Manganese Compounds and Lead-Pigment
Navin Chandra, S.S.
Amritphale, Deepti Pal, India
The Effect of Artificial Ageing on The Mechanical Behaviour and
Microstructure of Industrial Sludge
Treated by the CFS Technique with Cement and Undergoing a Compacting at the Paste Phase
Mohamed Choura, Maissoune Keskes,
Jamel Rouiss, Tunisia
Co-processing of Hazardous Industrial Sludge Containing Heavy Metals as
Alternative Raw Material for Portland Cement Clinker
Manaskorn Rachakornkij,
Thantip Punmatharith, Thailand
SESSION 4C
New Approaches to Landfills
Turning a Brownfield into a Greenfield at the Allied Waste
Niagara Falls Landfill
Bart A. Klettke, USA
Knowledge Based Ranking Algorithm for Comparative Assessment of Post Closure
Care Needs of Landfills
Vivek Kumar, Banu
Sizirici, Berrin Tansel, Luis Prieto-Portar, USA
SESSION 4D
Organic Wastes
A Recommended Holistic Policy Framework for Vegetable Oil
Waste Management in Egypt
S.T. El Sheltawy, A. A. Refaat, Egypt
Nutritional Evaluation as Ruminant Feed to Curtail the Environmental Menace
of Water Hyacinth in Nigeria
Adejoke A. Mako, O. J.
Babayemi, A. O. Akinsoyinu, Nigeria
Farm System Modeling of Organic Amendments in Tasmania, Australia
Shaun Lisson, Stephen Ives, Richard Doyle, Australia
Energy and Chemicals from Biomass – Some Thoughts for 21st Century
K. Gadgil, India
POSTER SESSION 1
New Quality Control And Sorting Strategies For Polyolefins
(PP-PE) Recycling
Giuseppe Bonifazi, Silvia Serranti, Italy
E-Construction Surplus Earth and Gravel Management System
Shih-Huang
Chen, Jyh-Dong Lin, Wen-Yan Luo, Taiwan
Characterization Of Electroplating Sludge Prior/After Cao Based
Solidification/Stabilization
Nenad Mikulic, Visnja
Orescanin, Ivanka Lovrencic, Stefica Knapic, Gordana Medunic, Croatia
Evaluation of Incinerator Bottom Ash for Pavement with Road Test
Jyh-Dong
Lin, Po-Hsun Sung, Jui-Mao Wang, Taiwan
Utilization of Water-Quenched Slag as Aggregate on Asphalt Concrete
Jyh-Dong
Lin, Ming-Chin Yeh, Ching-Tsung Hung, Taiwan
The Removal of Basic Dyes from Wastewater onto Dead Water Hyacinth
Gihan
F. Malash, Mohammad I. El-Khaiary, Egypt
Wood Pellet Ash - A Potential Forest Fertilizer and Soil Conditioning Agent
(A Case Study)
Matti Kuokkanen, Toivo
Kuokkanen, Hannu Nurmesniemi, Risto Pöykiö, Finland
Student-Powered Waste Characterization: A County/City/University
Collaboration
Bridget Bero, Matthew
Roberts, John Biedenharn, Matthew Morales, USA
Changes in MSW (Municipal Solid Waste) Composition in the Czech Republic in
Period from 2000 to 2008
Petra Hnatukova,
Libuse Benesova, Buhumil Cernik, Zdenka Kotoulova, Czech Republic
Study on Lactic Acid Production from Pretreated Lignocellulosic Waste
Yuya Yamashita, Chizuru Sasaki, Yoshitoshi Nakamura, Japan
Total and leachable heavy metal concentrations in green liquor dregs from a
causticizing process at a pulp mill
Risto Pöykiö, Hannu
Nurmesniemi, Toivo Kuokkanen, Riitta L. Keiski, Matti Kuokkanen, Finland
Release of Metals from Fluidized-Bed Boiler Bottom Ash at Different pH Values
Risto Pöykiö, Hannu
Nurmesniemi, Paavo Perämäki, Hannu Rönkkömäki, Finland
Waste Management Challenges in New Member States of EU
Krzysztof Pikon,
Poland
Assessment of the economic profit of recycling – case study
Mohamed Alwaeli, Poland
Integrated Processing of the Rice Hulls With Producing Materials of
Polyfunctional Purpose
Svetlana Yefremova,
Yuriy Sukharnikov, Corby G. Anderson, Kazakhstan
Three Dimensional Groundwater Simulation Based on Estimation of Nitrogen
Loading Amounts from Different Types of Nitrogen Source in Dairy Farms
Kazuei Ishii, Toru Furuichi, Noboru Tanikawa, Shogo Nitta, Japan
SESSION 5A
Ash
Use of Fly Ash in Cement Industry in Turkey to Decrease CO2 Emissions
Aysel T. Atimtay, Selda Ilksoy, Kursat C. Ozcan, Turkey
The Fly Ash from Sewage Sludge Thermal Treatment Recovery as LECA for
Constructed Wetlands
Andrzej Bialowiec,
Wojciech Janczukowicz, Miroslaw Krzemieniewski, Zygmunt Gusiatin, Poland
Fly Ash Potential And Its Consumption In Important Product Formation
P.Dubey, A. P. Verma, India
SESSION 5B
Policy and Regulations 1
Constitutional Policy Frameworks And Solid Waste Management In
Nigeria
Iyiola Omisore, Rahila Ahmadu, Tunji Idowu, Nigeria
A Company-level Adaptive Management Model Under the Implementation of
Extended Producer Responsibility (EPR) in the Car Industry
Yiping Zhao, Yingdi
Xie, Jun Ohya, Japan
Environmental Benefits from MSW System Conversion According to EU Regulations
Krzysztof Pikon, Poland
SESSION 5C
Bioreactor and Innovative Landfills
Economic Evaluation of an Aerobic Treatment Cell
Richard Aho, Brad Austin, USA
A Simple Method To Determine Volume Of Gas Produced And Biodegradation
Settlement As A Function Of Time
Joseph J. Lifrieri, Dorairaja Raghu,
USA
Struvite Formation in Leachate Recirculation Pipes of Bioreactor Landfills
Madduma K.P.T. Somathilake, Patrick Hettiaratchi, Canada
Desiccation Induced Shrinkage Of Compacted Lateritic Soil Treated With
Bagasse Ash
Kolawole J. Osinubi, Adrian O. Eberemu, Nigeria
Treatment of Landfill Leachate by Rotating Biological Contactor Pilot Plant
Saleh M. Al-Muzaini, Tareq Al-Obled, Abdul-Aziz Al-Sherriadh, Kuwait
Influence of Moisture Content Regimes in Leachate Composition
Liliana
Marquez-Benavides, Ma.C. Hernández-Berriel, Ma. del Consuelo Mañón-Salas,
Mexico
SESSION 5D
Compost Utilization and Agricultural Wastes 2
Compost Bioremediation of Petroleum Based Contaminated Soil
Maria Isabel Alviar, Brunei
Production and Utilisation of Anaerobic Digestate Compost From Domestic
Wastes for the Improvement of Soil Quality
Joseph C. Akunna,
Yusuf Abdullahi, United Kingdom
Manufacture of Organic Fertiliser from Poultry Slaughterhouse Waste Rendering
Plant Sludge Using Delta-D Technology
S.A.S. Perera, Sri
Lanka
Conversion of Coconut Water Waste Produced in Desiccated Coconut Mills into
Organic Fertiliser Using Delta-D Technology
S.A.S. Perera, Sri
Lanka
SESSION 6A
Landfill Studies
Landfill Site Selection for Municipal Solid Waste Using
Geographic Information System and Multi-Criteria Decision Analysis
Anurag Ohri, Prabhat
Kumar Singh, India
Measurement of Representative Landfill Gas Migration Samples at Landfill
Perimeters: A Case Study
Breda M. Kiernan,
Cormac Fay, Stephen Beirne, Dermot Diamond, Ireland
An Investigation On Geotechnical Problems of Uncontrolled Municipal Solid
Waste Landfill in The Province of Zonguldak, Turkey
Omer Faruk Capar,
Ismail Hakki Ozolcer, Yilmaz Yildirim, Turkey
Development of a Soil-Property Based Permeameter to Ensure Quality
Construction of Clay Liners in Waste Containment Structures
Frank Atuahene, USA
SESSION 6B
Policy and Regulations 2
Waste Management Stategies in Finland
Jouko Saarela,
Finland
SESSION 6C
Waste Collection
GIS-based Tools for Managing GPS Data from Solid Waste
Collection Operations
Thuy Nguyen, Bruce G. Wilson, Canada
A GIS-Based Simulation Model of Solid Waste Collection Operations
Thuy
Nguyen, Bruce G. Wilson, Canada
Collective Selection evaluation of the domestic solid waste at School of
Civil Engineering, Architecture and Urbanism (FEC) at the State University of
Campinas
Eglé Novaes Teixeira,
Martina Barbosa, Nani de Oliveira, Brazil
SESSION 6D
Use of Waste in Construction 1
Effective Use of the Mudflow Earth and Sand in Sakurajima as
Fine Aggregate for Concrete
Masatoshi Ikeda, Takao Nakazawa, Tanotu Utitani,
Japan
Utilization of Industrial Hazardous Waste In Concrete Mix Design M-15
Rachana Malviya, Rubina Chaudhary, India
Utilization Of Waste Plastics Coated Aggrgate for Flexible Pavement and Easy
Disposal Waste Plastics
R.Vasudevan, S.K.
Nigam, A. Ramalinga Chandra Sekar, R. Velkennedy, B. Sundarakannan, India
Assessment of Mold Resistance Characteristics of Recycling Building Products
Jyh-Tyng Yau, Shih-Chi Lo, Jyh-Dong Lin, Taiwan (R.O.C.)
POSTER SESSION 2
Municipal Waste - Environmental and Social Problem of the
Future
Libuse Benesova, Petra Hnatukova, Buhumil Cernik, Zdenka Kotoulova,
Czech Republic
Effect of Alkaline Pretreatment of Food Waste on Solubilization and
Biodegradability for Anaerobic Digestion
Jae Young Kim, Che-yun
Eom, Jae-yong Lim, Han Sang Cho, Republic of Korea
Temporary Frost Protection of a Landfill Liner Prior to Landfilling
Andrew T. Rose, USA
Effectiveness of Solidification/Stabilization for Leaching Behavior of (Fe &
Mn) Pickling Sludge
Smita Badur, Rubina Chaudhary, India
Cleaning and Conservation Waste Characterization of the State University of
Campinas
Eglé Novaes Teixeira, José Benedito de Castro Henrique, Brazil
SESSION 7A
Environmental Assessment 1
Global Warming And Solid Waste Management In A Developing
Nation: The Case Of Southern Nigeria
Jerry Uhuo, A. Ogunbiyi, Fatai Jimoh,
Nigeria
A GIS Approach to Waste Management and Recycling in New York State
Ashraf Ghaly, USA
The Influence of Increased Use of Compact Fluorescent Lighting on
Environmental Mercury Emissions
John F. Katers, Richard Winter, Adam
Snippen, USA
Assessment of Health Risks from a Closed Landfill with FRAMES Model Using
Groundwater and Leachate Monitoring Data
Banu Sizirici, Vivek
Kumar, Berrin Tansel, Luis Prieto-Portar, Debra Reinhart, Asawari Joshi, USA
SESSION 7B
Utilization of Wastes
Co-Processing of Plastic Waste with Coal in the Cement Kiln
Sant Prasad Gautam, P.S. Bundela, Vivek Chawla, India
Procedures For Environmental And Economic Assessment Of Automobile Industry
Waste Recovery
Marisa Soares Borges, Humberto Gracher Riella, Brazil
Energy Recovery From Solid Waste in Cement Rotary Kiln and its Environmental
Impact
Sant Prasad Gautam, R
. K. Jain, B. N. Mohapatra, R. M. Gupta, S. M. Joshi, India
Stabilization of Clay Soils with Lime and Ground Granulated Blast Furnace
Slag (GGBS)
Omer Faruk Capar, Aydin Kavak, Gamze Bilgen, Turkey
Use of Waste Glass in the Degradation of Waste Polyolefin
Deepak Pant,
India
Use of Scrap Tires in Cement Industry in Turkey
Aysel T. Atimtay, Emre
Gungor, C. Derinoz, Turkey
Dynamic Response Of Composites
S.S. Ibrahim, Egypt
SESSION 7C
Construction and Demolition Wastes
Characterization and Valorization of C&D waste: Flexural
Strength of Laminated Waste Concrete/Normal Concrete Beams
Samy Antit, Hedi
Hassis, Bruno Fiorio, Tunisia
Construction and Demolition Waste Management in Romania
Cristina Iacoboaea, Oana Luca, Romania
SESSION 7E
Specialized Wastes
Composition of Waste in Hospitals
Shyam Lal Arora, S.N.
Garg, Varun Kumar Arora, India
Minimization/Differentiation of Waste in Hospital
Shyam Lal Arora, S.N.
Garg, Varun Kumar Arora, India
The Hospital Assessment Tool: An Integrated Solution To Evaluate And Reduce
Solid Medical Waste Generation
Matthew Franchetti, USA
The Development of a Quantitative Sulphate Attack Test For Binders Used In
Mine Backfill
Shahé Shnorhokian,
Ferri P. Hassani, Jacques Ouellet, Canada
Traditional Medicine in Waste Bottles: Prospects of an Integrated Waste
Bottles Management
Felix Chijioke
Ekejiuba, Nwokoma Cosmos, Michael Iwuchukwu, Nigeria
SESSION 8A
Use of Wastes in Construction 2
Engineering Properties of Concrete Containing Large Volume of
Recycled Tire Rubber
Bashar S. Mohammed, Najwa Juaini, Malaysia
Freeze-Thaw Behavior of Pervious Rubberized Concrete
Ashraf Ghaly,
Andrew Heiser, USA
Beneficial Use of Recycled Materials in Construction
Pickett T Simpson,
Thomas F Zimmie, USA
SESSION 8B
Environmental Assessment 2
Heavy Metal Release from WEEE and Batteries in MBT and
Landfills
Alexander Janz, Bernd Bilitewski, Germany
Municipal Solid Waste Management Decisions and Implications for Greenhouse
Gas Emissions: the Case of Onondaga County, NY
Fred Owusu-Ansah, Tom
Rhoads, Donald J. Hughes, Richard C. Smardon, USA
Zero Waste and New York's Climate Footprint
Marjorie J. Clarke, USA
SESSION 8C
Waste Management in Developing Regions
Analysis of Barriers Affecting the Adoption of a Sustainable
Municipal Solid Waste Management System in Nigeria
C. Ezeah, C.L.Roberts,
D.G.Watkin, P.S.Philips, A. Odunfa, UK
Nairobi City's Household Solid Waste Management Problems
Judice Kemunto
Maikara, Kenya
SESSION 8D
Modeling
Object-Oriented Modelling Of The Integrated Waste Management
Systems Using Rapid Application Development (RAD) Methodology
Krzysztof Gaska,
Agnieszka Generowicz, Poland
Application Of Moduelo2 To Evaluate Hydrologic Processes In A Landfill In
Southern Brazil
Carolina M. Tozetto, M. Crstina B. Braga, Brazil
A "SMART" Model for Effective Improvement of Waste Management Systems
Germaine Saad, USA
SESSION 8E
Planning Studies
Driving Sustainable Waste Management: Tools For Assessing The
Suitable Sites For Waste Management Facilities In The Midlands Of England
Paul Phillips, UK
Studies Compare Between Wastewater Treatments Technologies
Lilyan Yaqup
Matti, Huda Abd Al-Slam Alhafidh, Iraq
An Empirical Study on Energy Consumption and Saving Potentials for China from
1990 till 2006
Yiping Zhao, Chunyou Wu, Japan
SESSION 9A
Additional Topics
Sustainable Agriculture Through Delta-D Technology - A
Solution To Urban Solid Waste And Global Warming
S.A.S. Perera, Sri
Lanka
Manufacture Of Bioethanol From Vegetable And Fruit Waste In Sri Lanka
S.A.S. Perera, R.M.C.G.
Ratnasinghe, D.C.G. Mahawatta, M.A.S. Perera, D.H.N. Perera, K.W.C. Mahesh, S.G.
Walliwala, Sri Lanka