Ph.D (Doctor of Philosophy) in Environmental Engineering (2012)

Graduate School of Science and Engineering, Saitama University, Japan.

M.Phill (Master of Philosophy) in Integrated Water Resource Management (IWRM) (2009)

Postgraduate Institute of Agriculture, University of Peradeniya, Peradeniya, Sri Lanka.

B.Sc. (Bachelor of Science) in Agriculture (2004)

Faculty of Agriculture, University of Peradeniya, Sri Lanka.

• President’s Awards for Scientific Publications (2018)
• Top 20 Researchers of the he Rajarata University of Sri Lanka (2021 & 2022).
• Japanese Government (Monbukagakusho) Scholarship for Ph. D., Saitama University, JAPAN. (2009-2012)
• Diploma- “1st International Conference and Exploratory Workshop on Soil Architecture and Physico-chemical Functions” Aarhus University, DENMARK (Nov. 30 – Dec. 2, 2010)
• Unilever Scholarship for M.Phill in Integrated Water Resources Management, Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka.  (2004-2007)

• Senior Student Counselor, Faculty of Agriculture, Rajarata University of Sri Lanka (November 2016 – November 2019).
• Student Counselor, Student Counselor, Faculty of Agriculture, Rajarata University of Sri Lanka (February 2015 – November 2016).
• Academic Counselor, Faculty of Agriculture, Rajarata University of Sri Lanka (November 2017 - todate).
• Sub-Warden, Faculty of Agriculture, Rajarata University of Sri Lanka (February 2015 – March 2017).
• Coordinator, 11th Annual Research Symposium 2019, Faculty of Agriculture, Rajarata University of Sri Lanka.
• Coordinator, Waste Management Project, Rajarata University of Sri Lanka. ( January 2019 todate)
• Member of the Curriculum Development Committee, Ecological Agriculture CBT Curriculum.
• Member of the Technical Evaluation Committee, Organic Fertilizer Pilot Project, North Central Province.
• Member of the Examinations Board of the Board of Study in Agricultural Engineering, Postgraduate Institute of Agriculture, University of Peradeniya (2016 up to date).
• Senior Lecturer Grade I, Department of Agricultural Engineering and Soil Science, Faculty of Agriculture, Rajarata University, Sri Lanka from September 2019 – todate.
• Senior Lecturer Grade II, Department of Agricultural Engineering and Soil Science, Faculty of Agriculture, Rajarata University, Sri Lanka from September 2013 – September 2019.
• Senior Lecturer Grade II, Faculty of Science and Technology, Uva Wellassa University, Sri Lanka from January 2013 –September 2013.
• Visiting Lecturer in College of Technology, Anuradhapura from January 2019 – todate.
• Visiting Lecturer in Faculty of Technology, Rajarata University of Sri Lanka from January 2019 – todate.
• Visiting Lecturer in Faculty of Social Science and Humanities, Rajarata University of Sri Lanka from January 2019 – todate
• Graduate Teaching Assistant in Environmental Conservation, Soil Physics and Environmental Soil Science: Graduate School of Science and Engineering, Saitama University, JAPAN from October 2009 to September 2012.
• Program Assistant in the Cap-Net Lanka Project in the activity of ‘Capacity Building in IWRM in a selected watershed’, Faculty of Agriculture, University of Peradeniya from 05th January 2009 to 30th  September 2009.
• Research Assistant in the Project “Asian Regional Research Programme in Environmental Technology” in the sub-project “Sustainable Solid Waste Landfill Management” coordinated by the Asian Institute of Technology (AIT) and funded by the Swedish International Developing Agency (Sida) from 01st October 2004 to 31st December 2006 under the guidance of Prof. B.F.A. Basnayake.

• President’s Awards for Scientific Publications (2018)
• Top 20 Reserchers of the Rajarata University of Sri Lanka (2021 & 2022).
• Japanese Government (Monbukagakusho) Scholarship for Ph. D., Saitama University, JAPAN. (2009-2012)
• Diploma- “1st International Conference and Exploratory Workshop on Soil Architecture and Physico-chemical Functions” Aarhus University, DENMARK (Nov. 30 – Dec. 2, 2010)
• Unilever Scholarship for M.Phill in Integrated Water Resources Management, Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka.  (2004-2007)

• Coordinator and a resource person in the Teacher Training Program on Agro-Food Technology for teachers in Anuradhapura Educational Division on 1st and 2nd of December 2015.
• A resource person in the practical programs related of Agriculture and bio systems for the students in North Central Province in 2019.
• A resource person in the practical programs related of Agriculture and bio systems for the students in North Central Province in 2019 from 3rd to 5th of December 2018.
• Coordinated Orientation program for the newly admitted fresh undergraduates of Faculty of Agriculture, Rajarata University of Sri Lanka from year 2016 to 2019.

A resource person in the radio program “Thirasara Mandapaya” broadcasted by Rajarata FM of Sri Lanka Broadcasting Corporation

• Coordinator and a resource person in the Teacher Training Program on Agro-Food Technology for teachers in Anuradhapura Educational Division on 1st and 2nd of December 2015.
• A resource person in the practical programs related of Agriculture and bio systems for the students in North Central Province in 2019.
• A resource person in the practical programs related of Agriculture and bio systems for the students in North Central Province in 2019 from 3rd to 5th of December 2018.
• Coordinated Orientation program for the newly admitted fresh undergraduates of Faculty of Agriculture, Rajarata University of Sri Lanka from year 2016 to 2019.
• A resource person in the radio program “Thirasara Mandapaya” broadcasted by Rajarata FM of Sri Lanka Broadcasting Corporation.

1. Mumthaj, A.M.M., Dissanayaka, D.M.S.H. and Mowjood, M.I.M. (2023). Enhancement of Phosphorous Removal from Wastewater using Murunkan Clay Mixed Media.  Larhyss Journal. ISSN 1112-3680. pp 145-163.
2. Hettiarachchi, K.R., Rathnayaka, R.A.A.S., Dissanayaka, D.M.S.H. and Mowjood, M.I.M. (2022). Evaluation of Clay Brick and Laterite Brick as Low-Cost Adsorbents for the Removal of Cd2+ and Pb2+ in Aqueous Solutions. Tropical Agricultural Research, 33(2), pp.140–150.
3. Serasinghe, B.A.P., Abeysinga, N.S., Dissanyaka, D.M.S.H., and Vithanage, N.V.H.S.K.  (2021). Effectiveness of local plant materials in Dry Zone Sri Lanka as natural coagulants in treating turbid water. Journal of Agricultural Sciences-Sri Lanka. Vol. 17, No 1, January 2022. Pp 161-170 http://doi.org/10.4038/jas.v17i1.9617
4. Bandara, B. G. R. R., Nayanarangani, M. D. P., and Dissanayaka, D. M. S. H. (2021). Environmentally Sustainable Approaches for The Utilisation of Agricultural Wastes for Ensuring Global Food Security – A Review. Journal of Tropical Environment, Faculty of Social Science and Humanities, Rajarata University of Sri Lanka, Volume-2 | Issue-1, pp. 103-120.
5. Dissanayaka, D. M. S. H., Jayaneththi, J. P. H. U., and Bandara, K. A. K. I. (2021).  Performance Evaluation of Biofilm Enriched Eppawala Rock Phosphates over Triple Super Phosphates for Rice Cultivation. Journal of Tropical Environment, Faculty of Social Science and Humanities, Rajarata University of Sri Lanka, Volume-2 | Issue-1, pp. 89-102
6. Ranasinghe, R. P. L. N. H., Dissanayaka, D.M.S.H., Rathnayake, R. A. A. S., Jayaneththi, J. P. H. U., and Nirmanee, K. G. S. (2021). Water Quality in Different Inlet and Outlet Canals Connected to Nuwarawewa, Anuradhapura, Sri Lanka. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS) Volume X, Issue II, February 2021 | ISSN 2278-2540.
7. D.M.C.L. Dharmasena, D. M. C. L., Dissanayaka, D. M. S. H., and Wickramasinghe, Y. M. (2021). Average Expenditure Incurred and the Perception of Safe Drinking Water in a CKDu Affected Area: A Case Study in Madawachchiya, Anuradhapura. Journal of Rajarata Economic Review, Department of Economics, Rajarata University of Sri Lanka.Vol. 01 Issue 01. pp.15-23
8. Dissanayaka, D. M. S. H., Dhananjaya, V. P. T., Kosgollegedara, E. J., and Karthigayini, S. (2021). Impact of Improved Aeration on Decomposition Rate of Enriched Compost. International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-2, February 2021, pp.852-857, URL: https://www.ijtsrd.com/papers/ijtsrd38557.pdf
9. Dissanayaka D. M. S. H., Karthigayini, S ., and Lakmal, R. M. D. M.    The Impact of Water Quality on Taste Profile of Made Tea in Sri Lanka. Samodhana Journal, Faculty of Social Science and Humanities, Rajarata University of Sri Lanka, Volume-9 | Issue-2, February 2021, pp.852-857.
10. Dissanayaka, D. M. S. H., Jayaneththi, J. P. H. U., and Jayaruwan, B. M. J. (2022).  Phytoremediation Potential of Different Wetland Plants Using Mini- Wetland Units. Journal of Tropical Environment, Faculty of Social Science and Humanities, Rajarata University of Sri Lanka, Volume-2 | Issue-1, pp. 19-30.
11. Amarasekara M.G.T.S., Wijesundara W.M.T.K.  and Dissanayaka, D. M. S. H. 2020. Water Quality and Consumer Perception of Reverse Osmosis Filtered Water. A Study in Chronic Kidney Disease Endemic Region in Anurahdapura, Sri Lanka. International Journal of Advanced Scientific Research and Management.
12. Dissanayaka, D. M. S. H., Hamamoto, S., Kawamoto, K. Komatsu, T. 2012. Thermal Properties of Peaty Soils: Effects of Liquid-Phase Impedance Factor and Shrinkag. Vadose Zone J. doi:10.2136/vzj2011.0092.
13. Hamamoto. S., Dissanayaka, D. M. S. H., Kawamoto, K., Komatsu, T., Moldrup, P. and Nagata. O. 2015.   Air and Water Transport Properties and Pore-Network Structure in Variably-Saturated Sphagnum Peat Soils. European Journal of Soil Science (accepted).
14. Dissanayaka, D. M. S. H., Hamamoto, S., Kawamoto, K. Komatsu, T. 2010. Effects of Moisture Content and Shrinkage on Thermal Properties for Hokkaido Peaty Soils. 1st International Conference and Exploratory Workshop on Soil Architecture and Physico-Chemical Functions (CESAR), Nov 30- Dec 2, Research center Forum, Aarhus, Denmark.
15. Dissanayaka D.M.T.S., Dissanayaka, D. M. S. H., and Jayaneththi, J. P. H. U. 2019. Small-scale wetland units for domestic greywater treatment. Sri Lankan Journal of Agriculture and Ecosystems ISSN: 2673-1401, Volume-1 | Issue-1, August 2019, pp.52 - 60.
16. Yapa, Y. M.N. C., Dissanayaka, D. M. S. H., and Nirmanee, K. G. S., 2019. Application of phytoremediation techniques to treat reverse osmosis concentrate. Small-scale wetland units for domestic greywater treatment. Sri Lankan Journal of Agriculture and Ecosystems ISSN: 2673-1401, Volume-1 | Issue-2, December 2019, pp.14 -25.
17. Gunasekara, S. G. V. D. H. and Dissanayaka, D. M. S. H. 2022. Use of Constructed Wetland Systems for Greywater Treatment: A Review. International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456- 6470, Volume-6, Issue-4, June 2022, pp.1001-1013, URL: www.ijtsrd.com/papers/ijtsrd50235.pdf
18. Nayanarangani, M. D. P., Dissanayaka, D. M. S. H., and Jayaneththi, J. P. H. U. 2022. Global Journal of Engineering and Technology Advances (GJETA). (ijtsrd), ISSN: 2582- 5003, Volume-12, Issue-2, August 2022, pp.106-112, URL: https://doi.org/10.30574/gjeta.2022.12.2.0144
19.  Prabodha, K. A. S., Dissanayaka, D. M. S. H., and Karthigayini, S. 2022. Prabodha, K. A. S., Dissanayaka, D. M. S. H., and Karthigayini, S. 2022. Assessment of water quality in different inlet and outlet canals of Kurunegala Lake, Sri Lanka. International Journal of Research and Scientific Innovation. (IJRSI), Volume IX, Issue IX, September 2022, ISSN 2321-2705

1. Dissanayaka, D. M. S. H., Dayawansa N. D. K. and Siriwardena, S. M. P.  2007. Assessment of land and water productivity with comparative performance indicators- A case study from mahaweli System C, Water Resources Research in Sri Lanka, Symposium Proceedings of the Water Professionals’ Day, October 01, 2007. pp 167-182.
2. Dissanayaka, D. M. S. H., Dayawansa, N. D. K. and Siriwardena S. M. P. 2009. The use of comparative performance indicators to assess the land and water productivity in large irrigation systems - An analysis from Mahaweli system H, Sri Lanka. Proceedings of the International exchange symposium on sustainable infrastructure development in asia, University of Ruhuna. pp 163-168.
3. Hamamoto, S., Dissanayaka, D. M. S. H., Kawamoto, K. Komatsu, T. 2010. Effects of Moisture Content and Shrinkage on Soil-Thermal Properties for Peat Soils in Japan. International Conference on Sustainable Built Environment (ICSBE-2010), 2010, December 13-14, Kandy, Sri Lanka.
4. Dissanayaka, D. M. S. H., Hamamoto, S., Kawamoto, K. Komatsu, T. 2010. Effects of moisture content and shrinkage on thermal properties of Hokkaido peaty soils, Proceedings of the Twelfth International Summer Symposium, Funabashi, Japan.  pp 223-226.
5. Dissanayaka, D. M. S. H., Hamamoto, S., Kawamoto, K. Komatsu, T. 2012. Heat and Gas Transport Characteristics in Differently-Decomposed Peaty Soils at Variably-Saturated Conditions. International Symposium on Advances in Civil and Environment Engineering Practices for Sustainable Development 2012, March 19, Galle, Sri Lanka.
6. Pathmalal, M. H. M. S. and Dissanayaka, D. M. S. H. 2014. Assessment of irrigation performance in Mahaweli System H - Sri Lanka with comparative performance indicators. Water Resources Research in Sri Lanka, Symposium Proceedings of the Water Professionals’ Day, October 01, 2014.  pp 106 - 113.
7. Jayawardana, H. M. C. M., Dissanayaka, D. M. S. H., Kumarasinghe, P. P. U. and Mowjood, M. I. M. 2015. Phosphorus Removal from Wastewater Using Soil as an Adsorbent.  Symposium Proceedings of the Water Professionals’ Day. pp 129-138.
8. Madushanka, R. M. G., Jayaneththi, J. P. H. U., Dissanayaka, D. M. S. H.  and Amarasekara, M. G. T. S. 2015. Impact of Urban Land Use in Anuradhapura City on Water Quality of Upper Malwathu Oya Stream. Symposium Proceedings of the Water Professionals’ Day, October 01, 2015 . pp 139-143.
9. Koralagamage, K.D.S., Jayaneththi, J.P.H.U and Dissanayaka, D.M.S.H. (2015). Potential Use of Municipal Wastewater for Agriculture; A Case Study from Anuradhapura, 3rd International Research Symposium, Rajarata University of Sri Lanka.
10. Dissanayake, D. M. K. G., Senevirathne, G., Jayaneththi,  J. P. H. U., Dissanayaka,  D. M. S. H., Jinadasa,  D.M. (2016). Quality Assessment of Biofilmed Biofertilizer- Vegetable Batches,  7th International Conference on Sustainable Built Environment,  Sri Lanka.
11. Dharmasena, D. M. C. L., Wickramasinghe, Y. M., and Dissanayaka, D. M. S. H. 2017. Average expenditure incurred on safe drinking water: A case study in Madawachchiya Area in Anuradhapura district. Symposium Proceedings of the International Symposium on Agriculture and Environment 17.01.2015 . pp 206-209.
12. Wijesundara, W. M. T. K., Amarasekara, M. G. T. S., and Dissanayaka, D. M. S. H. 2017. Role of reverse osmosis plants on purification of drinking water in CKDu prevailing areas in Anuradhapura, Sri Lanka. Symposium Proceedings of the Water Professionals’ Day, October 02, 2017 . pp 73-81.
13. Jinarajadasa, M. H. C. N., Dissanayaka, D. M. S. H., and Duminda, D. M. S., 2017. Constructed wetland system for treatment of hostel greywater using Cattail plants. Symposium Proceedings of the Water Professionals’ Day, October 02, 2017 . pp 81-91.
14. Dissanayaka D.M.T.S., Dissanayaka, D. M. S. H., and Jayaneththi, J. P. H. U. 2018. Performance evaluation of constructed wetland units for domestic greywater treatment. Proceedings of the 23rd international forestry and environment symposium 2018 of the department of forestry and environmental sciences, University of Sri Jayawardhanapura, Sri Lanka. Pp 194.
15. Yapa, Y. M.N. C., Dissanayaka, D. M. S. H., and Nirmanee, K. G. S., 2018. Potential of phytoremediation techniques to improve the quality of reverse osmosis concentrate. Proceedings of the 23rd international forestry and environment symposium 2018 of the department of forestry and environmental sciences, University of Sri Jayawardhanapura, Sri Lanka. Pp 195.
16. Ranasinghe, R. P. L. N., Rathnayake R.A.A.S., Dissanayaka, D. M. S. H., Nirmanee, K. G. S., and Jayaneththi, J. P. H. U., 2018. An assessment of water quality in different inlet and outlet cannals connected to Nuwarawewa in Anuradhapura Sri Lanka. Proceedings of the 23rd international forestry and environment symposium 2018 of the department of forestry and environmental sciences, University of Sri Jayawardhanapura, Sri Lanka. Pp 195.

1. Pathmalal, M. H. M. S. and Dissanayaka, D. M. S. H. 2014. Assessment of irrigation performance in Mahaweli System H, Sri Lanka with comparative performance indicators. 6th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp1.
2. Jayasinghe, J. P. C., Wijebandara, D. M. D. I. and Dissanayaka, D. M. S. H. 2014. Copper and zink nutrient status of Coconut estates in the coconut triangle of Sri Lanka. 6th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp4.
3. Madushanka, R. M. G., Dissanayaka,  D. M. S. H.  and Amarasekara, M. G. T. S. 2014. Impact of urban land use on water quality of upper Malwathoya stream. 6th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 15.
4. Kumari, H. B. J., Vithanage, M., Dissanayaka, D. M. S. H., Rajakaruna, R. M. P. and Seneviratne, G. 2014. Novel bio-amendments for phytotoxicity reduction of heavy metals in contaminated soils. 6th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 18.
5. Koralagamage K. D.S. and Dissanayaka, D. M. S. H. 2014. Potential to use domestic and municipal wastewater for agriculture: a study in Anuradhapura municipal area. 6th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 21.
6. De Silva, U. H. C. T. S., Wijebandara, D. M. D. I. and Dissanayaka, D. M. S. H. 2014. Status of soil Boron in the coconut triangle of Sri Lanka. 6th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 28.
7. Weerasekara, T. M. W., Nijamudeen, M. S. and Dissanayaka, D. M. S. H. 2015. Increasing resilience of upland cropping systems through a modified alley cropping system. 7th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 21.
8. Jayawardana, H. M. C. M., Mowjood, M. I. M., Dissanayaka, D. M. S. H. and Jayaneththi, J.  P. H. U. 2015. 7th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 77.
9. Weerathunga, D. M. K. G., Mowjood, M. I. M., Dissanayake, D. M. S. H., and Jayaneththi, J.  P. H. U. 2016. 8th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 25.
10. Dissanayake,  D. M. K. G., Senevirathne,  G., Dissanayaka,  D. M. S. H., Jinadasa,  D.M. (2016). Relationship between the quality parameters of biofilm biofertilisers and vegetable crop resilience. 8th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 26.
11. Dharmasena, D. M. C. L., Wickramasinghe, Y. M., and Dissanayaka, D. M. S. H. 2017. Average expenditure incurred on safe drinking water: A case in Madawachchiya Area in Anuradhapura district. 9th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 29.
12. Jinarajadasa, M. H. C. N., Dissanayaka, D. M. S. H., and Duminda, D. M. S., 2017. Constructed wetland system for treatment of hostel greywater using Cattail plants. 9th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 32.
13. Wijesundara, W. M. T. K., Amarasekara, M. G. T. S., and Dissanayaka, D. M. S. H. 2017. Role of reverse osmosis plants on purification of drinking water in CKDu prevailing areas in Anuradhapura, Sri Lanka. 9th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 38.
14. Jayalath, J. M. D. M, Dissanayaka, D. M. S. H., and Duminda, D. M. S., 2017. Constructed wetland system for treatment of greywater at students' hostel complex, Faculty of Agriculture, Rajarata University of Sri Lanka. 9th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 41.
15. Yapa, Y. M.N. C., Dissanayaka, D. M. S. H., and Nirmanee, K. G. S. 2018. Comparative study to improve the quality of reverse osmosis concentrate using phytoremediation techniques. 10th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 1.
16. Gunarathne, M. M. A. B., Abeysekara, R., Dissanayaka, D. M. S. H., Edirisooriya, C.H., and Kahandage P. D., 2018. Evaluation of the performance and processing cost of newly developed loose leaf barn method for curing Tobacco leaves. 10th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 2.
17. Dissanayaka D.M.T.S., Dissanayaka, D. M. S. H., and Jayaneththi, J. P. H. U. 2018. A feasibility analysis of the constructed wetland unit for domestic greaywater treatment. 10th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 4.
18. Ranasinghe, R. P. L. N., Dissanayaka, D. M. S. H., Rathnayake R.A.A.S., and Jayaneththi, J. P. H. U., 2018. Assessment of water quality in different inlet and outlet cannals of Nuwarawewa Tank in Anuradhapura Sri Lanka. 10th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 5.
19. Mihimali, J. A. M., Dissanayaka, D. M. S. H., and Jayaneththi, J. P. H. U., 2018. Constructed wetland system for treatment of greywater using Bulrush plants. 10th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 19.
20. Jayaruwan B. M. J., Dissanayaka, D. M. S. H., and Jayaneththi, J. P. H. U., 2019. Small scale constructed wetland units for domestic greywater treatment. 11th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 1.
21. Lakmal. R. M. D. M., Dissanayaka, D. M. S. H., and Amarasena, C. S., 2019. The impact of water quality on taste profile of made tea in Sri Lanka. 11th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 2.
22. Dhananjaya, V. P. T., Dissanayaka, D. M. S. H., and Kosgollegedara, E. J., 2019. Effect of aeration on production rate and nutritional level of enriched compost. 11th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 3.
23. Perera, S. S. H., Dissanayaka, D. M. S. H., and Nirmanee, K. G. S., 2019. Treatment of reverse osmosis concentrate and kitchen wastewater by phytoremediation techniques. 11th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 11.
24. Yodiptha, H. G. S. D., Dissanayaka, D. M. S. H., Rathnayake R.A.A.S., and Jayaneththi, J. P. H. U., 2019. Impact of detergents on chemical, physical and biological properties of Alfisols in Anuradhapura. 11th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 13.
25. Giragama, W. M. D. B. Giragama., Dissanayaka, D. M. S. H., and Jayaneththi, J. P. H. U., 2019. Treatment of bathroom wastewater in microbiologically improved constructed wetland using Bulrush plant. 11th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 19.
26. Perera, S. S. H., Dissanayaka, D. M. S. H., and Nirmanee, K. G. S., 2019. Identify the Potential of Phytoremediation Techniques to Enhance the Removal Efficiency of Pollutants in RO Concentrate. Proceedings of the International Symposium on Sustainable Soil Management- 2019, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 61-63.
27. Yodiptha, H. G. S. D., Dissanayaka, D. M. S. H., Rathnayake R.A.A.S., and Jayaneththi, J. P. H. U., 2019. Greywater Quality and its Impacts on Selected Soil Properties. Proceedings of the International Symposium on Sustainable Soil Management- 2019, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 25-27.
28. Harshana, J. W. E,  Dissanayaka, D. M. S. H. and Amarasekara, M. G. T. S. 2020. Solid Waste Management in Tourist Destination Cities: A review. 12th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 7.
29. Nawanjana, S. G. D., Jayaneththi, J. P. H. U., and Dissanayaka, D. M. S. H.,  2020. Phyto-microbial Treatment of bathroom Wastewater in Constructed Wetland. 12th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 10.
30. Palliyaguru, K. P. G. I. N., Dissanayaka, D. M. S. H., and Rathnayaka, R. A A. S. 2020.Eco-friendly Absorbents to Remove Cd+2 from Synthetically made Cadmium Containing Wastewater. 12th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 11.
31. Perera, S. S. S., Rathnayaka, R. A. A. S., and Dissanayaka, D. M. S. H. 2020. Potential of Grumusol of Murunkan, Sri Lanka in Removing Phosphorous from Wastewater. 12th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 12.
32. Sameera, T. G. N., Dissanayaka, D. M. S. H. and Kosgollegedara, E. J. 2020. Design, Development and Performance Evaluation of an Incinerator Model for Disposable Sanitary Waste. Sri Lanka in Removing Phosphorous from Wastewater. 12th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 13.
33. Shanthapriya, K. D. S. H., Dissanayaka, D. M. S. H., Rathnayaka, R. A A. S. and Wickramasinghe, S. 2020. Water Pollution and Water Quality Assessment in Mihintale Tank. 12th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 18
34. Chathurika, R. G. T., Dissanayaka, D. M. S. H., and Nirmanee, K. G. S. 2020. Impact of Urbanisation on Surface Water Quality. 12th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 25.
35. Gunasekara, A. G. N. T., and Dissanayaka, D. M. S.H. 2021. Characterization and Quantification of Laboratory Waste as a measure towards effective Waste Management in the Rajarata University of Sri Lanka. 13th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 39.
36. Shamani, K. A. D. A., and Dissanayaka, D. M. S.H. 2021. Household waste management practices among semi-urban residents – A community-based cross-sectional study from Galudupita Grama Niladhari Division. 13th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 41.
37. Ariyarathna, S.R.G.T., Dissanayaka, D. M. S. H., and Sandamini, A. G. D. 2021. Enhancement of Phosphorous removal from Wastewater using clay mix media. 13th Annual Research Proceedings, Faculty of Agriculture, Rajarata University of Sri Lanka. Pp 45.

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