Water and Soil geochemistry

Waste Management

Movement of trace metals in nature and removal processes

Impact of chemico-environmental, agrogenic and climatological factors on the onset of chronic kidney disease of uncertain etiology in Monaragala District, Sri Lanka -Funded by Sabaragamuwa University of Sri Lanka from 2017-2019-(3.9 million-SUSL)

Development of baseline soil information system for soil C and other nutrients for paddy growing soils in Sri Lanka-Funded by National Research Council in Sri Lanka -2017-2020 (4.7 million-NRC)

Investigating geochemical factors contribute onInvestigating geochemical factors contribute on CKDu in Uva Province and identification microbes for residual pesticides detoxification in water and soil environment-2019-2021 (funded by world bank-40 million)

Assessment of aquifer quality in relation with chronic kidney disease with unknown etiology in dry zone of Sri Lanka through an integrated approach using isotopes and water chemistry 2019-2023 (38 million-NSF)

Recent SCI,SCIE, ESCI Publications·

161618825299. Udeshani, W. A. C., N. H. Koralegedara, Gunatilake, S.K., Si-Liang-Li, Xiangyu Zhu, Rohana Chandrajith (2022). "Geochemistry of Groundwater in the Semi-Arid Crystalline Terrain of Sri Lanka and Its Health Implications among Agricultural Communities." Water 14(20): 3241. doi:10.3390/w14203241
161618825300. Piyathilake, I.D.U.H., Randika, J.D.L, Rathnayake, R.M.K.T., Ranaweera, L.V., Udayakumara, E.P.N., Gunatilake, S.K. and Dissanayake, C.B. (2022). Socio‑economic determinants of Chronic Kidney Diseases of uncertain etiology (CKDu) in the Uva Province, Sri Lanka: a cross‑sectional study, Journal of Environmental Studies and Sciences, https://doi.org/10.1007/s13412-022-00780-y
161618825301. Piyathilake, I.D.U.H., Ranaweera, L.V., Udayakumara, E.P.N., Gunatilake, S.K. and Dissanayake, C.B. (2022). Assessing Groundwater Quality using the Water Quality Index (WQI) and GIS in the Uva Province, Sri Lanka, Journal of Applied Water Science, 12-72, https://doi.org/10.1007/s1320-022-01600-y
161618825302. Randika J.L.P.C., Bandara P.K.G.S.S., Soysa H.S.M., Ruwandeepika H.A.D., Gunatilake S.K. (2022). Bioremediation of pesticide-contaminated soil: a review on indispensable role of soil bacteria, Agricultural Journal of Sri Lanka,17(1)
161618825303. R.G. I. Sumudumali, J. M. C. K. Jayawardana, S. K. Gunatilake, E. P. N. Udayakumara S. Malavipathirana, G.U.Jayalal(2021). The effects of fungicide chlorothalonil on leaf litter breakdown rate in tropical streams: a microcosm study, Aquatic Sciences (2022) 84:14, 1-14, https://doi.org/10.1007/s00027-021-00845-0
161618825304. R. G. I. Sumudumali, J. M. C. K. Jayawardana, I. D. U. H. Piyathilake, J. L. P. C. Randika, E. P. N. Udayakumara, S. K. Gunatilake &S. Malavipathirana (2021). What drives the pesticide user practices among farmers in tropical regions? A case study in Sri Lanka. Environ Monitoring Assessment. 193, 860. https://doi.org/10.1007/s10661-021-09611-z
161618825305. Gunatilake, S. K., Piyathilake, I. D. U. H., Udeshani, W. A. C., Hapuarachchi, H. A. C. S., Ranaweera, L. V., Udayakumara, E. P. N., & Dissanayake, C. B. (2021). Geochemistry of groundwater in the Uva Province, Sri Lanka implications for chronic kidney disease of uncertain origin. Frontiers in Water, 160.
161618825306. R.T. Rubasinghe, S.K.Gunatilake, Rohana Chandrajith (2021). Climatic control of major and trace elements in paddy soils from wet and dry regions of Sri Lanka, Environmental Challenges,5,2021,100361, https://doi.org/10.1016/j.envc.2021.100361
161618825307. Sumudumali, R. G. I., Jayawardana, J. M. C. K., Malavipathirana, S., Udayakumara, E. P. N., & Gunatilake, S. K. (2021). Correction to: A Review of Biological Monitoring of Aquatic Ecosystems Approaches: with Special Reference to Macroinvertebrates and Pesticide Pollution. Environmental Management, 1-1.
161618825308. I.D.U.H., Udayakumara, E. P. N, L.V.Ranaweera and S.K.Gunatilake (2021). Modeling predictive assessment of carbon storage using InVESTmodel in Uva province, Sri Lanka, Modeling Earth Systems and Environment, https://doi.org/10.1007/s40808-021-01207-3
161618825309. Piyathilake, I.D.U.H., Udayakumara, E. P. N.and Sunethra Kanthi Gunatilake (2021). GIS and RS Based Soil Erosion Modelling in Sri Lanka: A Review, The Journal of Agricultural Sciences-Sri Lanka, 6(1), 143-162.
161618825310. Piyathilake, I. D. U. H., Sumudumali, R. G. I., Udayakumara, E. P. N., Ranaweera, L. V., Jayawardana, J. M. C. K., & Gunatilake, S. K. (2020). Modeling Predictive Assessment of Soil Erosion Related Hazards at the Uva Province in Sri Lanka. Modeling Earth Systems and Environment.1-16 doi: 10.1007/s40808-020-00944-1
161618825311. R.P.S.K. Rajapaksha, S.B. Karunaratne, A. Biswas, K. Paul, H.M.S.P. Madawala, S.K. Gunathilake, R.R. Ratnayake (2020). Identifying the spatial drivers and scale-specific variations of soil organic carbon in tropical ecosystems: A case study from Knuckles Forest Reserve in Sri Lanka, Forest Ecology and Management, 474, 1-11.https://doi.org/10.1016/j.foreco.2020.118285.
161618825312. W.A.C. Udeshani, H.M.K.P. Dissanayake, S.K. Gunatilake, Rohana Chandrajith (2020). Assessment of groundwater quality using water quality index (WQI): A case study of a hard rock terrain in Sri Lanka, Groundwater for Sustainable Development,11, 1-7.  https://doi.org/10.1016/j.gsd.2020.100421.  
161618825313. Perera, K.H.K., Udeshani, W.A.C., Piyathilake, I.D.U.H., Wimalasiri, G. E. M. Kadupitiya, , H. K., Udayakumara, E. P. N.and Gunatilake, S. K. (2020). Assessing soil quality and soil erosion hazards in the Moneragala District, Sri Lanka. SN Appl. Sci. 2, 2175 (2020). https://doi.org/10.1007/s42452-020-03926-1
161618825314. H.M.K.P. Dissanayake, W.A.C. Udeshani, S. Koswatte, K.T. Rathnayake, S.V. Gunatilake, R. Fernando and S.K. Gunatilake (2020).Quality of surface and ground waters for domestic and irrigation purposes in CKD/CKDu prevalent areas in Moneragala District, Sri Lanka, Ceylon Science Journal, 49(1) 2020: 81-91, DOI: http://doi.org/10.4038/cjs.v49i1.7708
161618825315. S.K.Gunatilake, Rohana Chandrajith (2017). Removal of Pb(II) from contaminated water using low temperature pyrolyzed agricultural and forest waste biochars – a comparatively study, Journal of Desalination and water treatment, ISSN: 1944-3994, 62,316-324. doi: 10.5004/dwt.2017.1813
161618825316. Ruvini Rubasinghe, S.K. Gunatilake, and Rohana Chandrajith (2015). Geochemical characteristics of groundwater in different climatic zones in Sri Lanka, Environmental Earth Sciences, 74(4), 3067-3076, DOI 10.1007/s12665-015-4339-1.

Other International Index journal

1. A.A.S.V.Gunatilake and S..Gunatilake (2020). Biochar: As An Absorbent For Organic And Inorganic Contaminants In Soil And Water-A Review, Journal of Multidisciplinary Engineering Science Studies (JMESS), 6(3), 3099-3108.
2. S.K.Gunatilake (2016). N and P variation in Groundwater in Wet Zone and Dry Zone in Sri Lanka due to Fertilization to Paddy Crop, International Journal of Scientific and Research Publications, 6(9), 1-5.
3. S.K.Gunatilake and S. Malavipathirana (2016). Assessment of Suitability of Anionic Synthetic Detergents in Sri Lanka, International Journal of scientific & Technology Research, 5(9), 140-142.
4. S.K.Gunatilake (2016).Production of quality organic fertilizer using firewood ash and tea residues produced from tea factories in Sri Lanka, IOSR Journals in Applied Chemistry (IOSR-JAC), 9(8), 48-53.
5. S.K.Gunatilake (2016). Quantity Improved Analysis of Composting Process: A Case Study in Western Province in Sri Lanka, Journal of Multidisciplinary Engineering Science and Technology, 3(4), 4500-4504.
6. S.K.Gunatilake, S.S.Samaratunga and Folahan A. Adekola (2016). Effects of Binder on the Physico-chemical Properties and the Quality of Paracetamol Tablets, Der Pharma Chemica, CODEN(USA):PCHHAX, 8(4), 237-242.
7. S.K.Gunatilake (2016). Adsorptive behaviour of Arsenic(III) ions from aqueous solution on to forestry and agricultural waste biochar pyrolyzed at 400°C, Sabaragamuwa University Journal, , 14(2), 108-118.
8. S.K.Gunatilake (2016). Removal of Cr(III)Ions from Wastewater using Sawdust and Rice Straw Biochar Pyrolysed at Low Temperature, International Journal for Innovation Education and Research, 4(4), 44-54.
9. S.K.Gunatilake (2015). Methods of removing heavy metals from industrial wastewater. Journal in multidisciplinary engineering science studies, 1(1), 12-18.
10. S.K.Gunatilake, S.S.Samaratunga and R.T.Rubasinghe (2014), Chronic Kidney Disease (CKD) in Sri Lanka – Current Research Evidence Justification: A Review. Sabaragamuwa University Journal, 13(2), 31-58.
11. Sanjeewa, C.H.G.R., Gunatilake S.K. S.S.Samaratunga and Basnayake, B.F.A. (2013). Production of High Quality Charcoal from Municipal Solid Waste by Developing a Pyrolyser. Journal of Solid Waste Technology and Management, 39(1), 13-24.
12. P.U. Liyanage, S.K. Gunatilake, and H.S.K. Fernando, (2011). An Environmental Assessment of Solid Waste at the Koggala Export Processing Zone in Sri Lanka, Ceylon Journal of Science-Physical Science, 16(1), 37-45.
13. Gunatilake, S and Iwao, Y. (2010) A Comparison of Nitrate Distribution in Shallow Groundwater of Two Agricultural Areas in Sri Lanka and in Japan. Sabaragamuwa University Journal. 9(1), 81-95.
14. Lekammudiyanse, L.M.M.U. and Gunatilake, S.K. (2010) Evaluation of the effectiveness of compost bin as a household water management technique: A case study in Gampaha Municipal Council Area, International Journal of Basic and Applied Sciences, 10(1)(1/6), 89-94.
15. Gunatilake, S.K. and Iwao, Y. (2009) Geoenvironmental Assessment for Nitrate Pollution of Surface and Groundwater by Fertilization (A Study in Shiroishi Plain, Japan), International Journal of Civil and Environmental Engineering, 9(10), 12-19.
16. Gunatilake, S.K., Iwao, Y., Gunatilake, J. and Kumaragamage, D. (2003) Geoenvironmental Assessment for Nitrate Pollution of Groundwater by Fertilization in Shiroishi Plain in Japan. Journal of Soil Science Society of Sri Lanka, Rice Research and Development Institute, Sri Lanka, 14, 71-92.

1. SOIL AND WATER QUALITY CONSULTANT - LALAN PLANTATION (PVT) LTD

2. GROUNDWATER GEOCHEMISTRY SPECIALIST - REVIEW THE OPERATION LEVEL OF SPILLWAY GATES OF SAMANALAWEWA DAM AT BELIHULOYA

1.Research of Excellence -2014- International Summer Symposium, Saitama University, Japan

2. NRC Merit Award - 2015, 2017

3. Vice Chancellor Award-Best Researcher in Faculty of Applied Sciences, Sabaragamuwa University of Sri Lanka -2020

4.Vice Chancellor Award-Most Cited Researcher, Sabaragamuwa University of Sri Lanka -2021

M.Phil Supervisions

1.  R.T.Rubasinge - (Study of contamination of paddy soil by toxic trace metals due to long term application of fertilizer) - 2015.

2.  K.Rajapaksha - (Carbon sequestration in different forest in Sri Lanka )– 2014.

3.  Charitha Udeshani (Impact of chemico-environmental, agrogenic and climatological factors on the onset of chronic kidney disease of uncertain etiology in         Monaragala District, Sri Lanka) -2016

4. Udara Piyathilaka (Investigating geochemical factors contriute to CKDu in Uva Province and identification of microbes for residual pesticides detoxification in water and soil environment)-2022

5. Iresha Sumudumali (Evaluation of pesticide unser practices among farmers and identify ossible aquatic ecological responses to pesticide contamination) – 2022

6. Thilakshi Paranavithana –(Base line soil information for major and minor nutrients of paddy soil in Sri Lanka -2022

M.Sc.Supervisions

1. Kasun Dissanayake, Postgraduate Institute of Science, University of Peradeniya – 2018

1. K.M.G.S. Kalhara, J.A.P. Madhushanka, D.A.M. De Silva, S.K. Gunatilake, B.M.R.L.Basnayake (2022).Next-Gen smart value chain for cottage industry: A case of Kithul value chain. 4th International conference on Agricultural Sciences-Aginsight-2022, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka
2. Dinithi Weerasinghe, B.T.G.S Kumara, Banujan Kuhaneswaran, SK Gunatilake (2021). Identification the type of Chronic Kidney Disease Based on Heavy metals in soil using ANN, 2021 Third International Sustainability and Resilience Conference: Climate Change, IEEE, 15-16 November 2021, pp
3. Dinithi Weerasinghe, B.T.G.S Kumara, Banujan Kuhaneswaran, SK Gunatilake (2021). Neural Network-based Model for Classifying the Water Sources Based on the Physico-Chemical Parameters, International Conference on Data Analytics for Business and Industry, IEE, 25-26 October 2021
4. S.K.Gunatilake and Rohana Chandrajith (2018). Removal of toxic heavy metals from industrial wastewater using rice straw and saw dust biochar, The 10^th Asia-pacfic landfill symposium – APLAS Tokyo-2018, November, Tokyo, Japan. Pp.
5. S.K.Gunatilake, D.Balapitiyage, B.F.A.Basnayake (2016). Production of algae based semi solid fuel as a renewable source, Conference of science council in Asia -2016, Sri Lanka. pp.365-369
6. H.M.K.P.Disanayake, S.K.Gunatilake, B.F.A.Basnayake (2016). Developing a low cost leachate treatment bioreactor for Gohagoda solid waste dumpsite, 3^rd international research symposium, Rajarata University of Sri Lanka, 26-27^th January 2016.
7. HAHI Amarasinghe, SK Gunatilake,AK Karunarathna (2016). Determinations of optimum pyrolysis conditions fro producing Refuse Tea Biochar, Proceedings of the International symposium on agriculture and environment 2016 –ISAE-2016, University of Ruhuna, Sri Lanka, pp212-215.
8. Amarasinghe, HAHI, Gunatilake, SK, Karunarathna, AK (2015) Ascertaining of Optimum Pyrolysis condition in producing refuse tea biochar as a soil amendment, 5^th International Conference of Sabaragamuwa University of Sri Lanka, November 19-20^th, 2015, Colombo, Sri Lanka,pp. 97-102.
9. R.T.Rubasinghe, Sunethra Gunatilake, K.W.Perera (2013). Suitability of Fibre Complexes of Coir and Banana as Eco-Friendly Sorbent Material for Oil spills Removals. 28^th Technical sessons-“Geoscience for National Development” Geological Society of Sri Lanka, IFS, Kandy,22^nd February 2013.
10. Dharmapriya, GN, Gunethilake, SK (2011) Determination of an optimum pile height for rapid degradation of organic matter during composting. International symposium on Agriculture and Environment (ISAE-2011), Faculty of Agriculture, University of Ruhuna, Sri Lanka.
11. KM Ekanayake, B Basnayake, SK Gunatilake and AS Herath Chandrasena (2005) Introduction of Inclined Step Grade Composting System for Asian Countries (A Case Study in Tangalle Area in Sri Lanka), The Seven International Summer Symposium, Tokyo University, Japan pp.343-346.
12. ASH Chandrasena, BF Basnayake, SK Pathirage and SK Gunatilake (2005). Quality Parameters of Compost Made from Municipal Solid Waste (MSW) by Inclined Step Grate (ISG) Composting System (A Case Study in Meewatura Farm, University of Peradeniya, Sri Lanka), The Seven International Summer Symposium, Tokyo University, Japan pp.347-350.
13. Gunatilake S.K., Basnayake, B.F.A., Somatilake, E.G.W., and Nirudaka, D.G.T. (2004). The Quality Improvement of Eppawala Apatite in Sri Lanka as an Organic Fertilizer for Short Term Crops. The Sixth International Summer Symposium, Saitama University, Japan pp.421-424.
14. Gunatilake, J. and Gunatilake,S.K. (2004) Pollution of Drinking Water by Application Research in Sri Lanka, Symposium Proceedings of the Water Professionals’ Day. Peradeniya, Sri Lanka, pp.113-120.
15. S. Gunatilake, Y. Iwao, J.Gunatilake and A. Saito (2002) Effect of Over Fertilization for Contamination of Surface and Subsurface Water Bodies and Deep Groundwater Table (A Case Study from Shiroishi Plain in Japan). Proceedings of the International Symposium on Lowland Technology (ISLT), September 18-20, 2002, Saga University, Japan, pp. 343-349.
16. Gunatilake, S.K., Iwao, Y. and Gunatilake, J.K. (2002) The Effect of Subsurface Drainage to Surface Water Bodies and Shallow Groundwater Table. Proceedings of the Fourth International Summer Symposium, 02nd August 2002, Kyoto, Japan, pp.347-350.
17. Gunatilake, S.K., Iwao, Y. and Gunatilake, J.K. (2001) Nitrate Contamination of Shallow Groundwater due to Input of Fertilizer (A Case Study from Saga, Japan). Proceedings of the 3rd International Summer Symposium, 08th August 2001, Tokyo, Japan. Pp.357-360.
18. Gunatilake, S.K., Iwao, Y. and Saito, A. (2001). Input of Nitrate of into Shallow Groundwater Due to Application of Fertilizer (A case study from Saga, Japan), Proceeding of the 3^rd Asian Symposium on Engineering Geology and the Environment (SEGE), Yogyakarta, Indonesia, pp.353-358.
19. Gunatilake, S.K., Iwao, Y. and Gunatilake, J. (2000) Effect of the Intensive Use of Fertilizers for Contamination of Groundwater by Nitrate (A Case Study from Sri Lanka). Proceedings of the 4th Kansai International Geotechnical Forum (KIG Forum 2000). May 24-26, Kyoto, Japan. Pp.193-198.
20. Gunatilake, S.K., Gunatilake, J. and Iwao, Y. (1999) Effect of the Application of Nitrate Fertilizer on the Contamination of Groundwater. Proceedings of the 2nd Asian Symposium on Engineering Geology and the Environment. September 23-25, 1999, Bangai, Malaysia, pp.28-31.

1. W.A.C. Udeshani, C.L. Vithana, N.H. Koralegedara, S.K. Gunatilake, Siliang Li and R. Chandrajith (2021). ASSESSMENT OF GROUNDWATER QUALITY IN RELATION TO CHRONIC KIDNEY DISEASE IN YAN OYA RIVER BASIN, SRI LANKA, Proceedings of the 8th International Symposium on Water Quality and Human Health: Challenges Ahead Postgraduate Institute of Science, University of Peradeniya, Sri Lanka, 26th & 27th November 2021, p49
2. W.A.C. Udeshani, N.H. Koralegedara , S.K. Gunatilake , Siliang Li and R. Chandrajith (2021).COMPREHENSIVE GEOCHEMICAL ASSESSMENT OF GROUNDWATER IN YAN OYA RIVER BASIN, SRI LANKA, Proceedings of the Postgraduate Institute of Science Research Congress, Sri Lanka: 29th -31st October 2021, p33.
3. Piyathilake, I.D.U.H., Sumudumali, R.G.I., Udayakumara, E.P.N., Ranaweera, L.V., Jayawardhana, J.M.C.K. & Gunatilake, S.K. (2020), ‘Prioritization of Watersheds in Uva Province, Sri Lanka, Based On Soil Erosion Hazard’, Annual Research Congress of Postgraduate Institute of Science (RESCON 2020), University of Peradeniya, Sri Lanka, p. 1.
4. Piyathilake, I.D.U.H., Udayakumara, E.P.N. & Gunatilake, S.K. (2020), ‘A Review of GIS/RS Based Soil Erosion Modeling in Sri Lanka’, 2^nd International Conference of Center for Environmental Studies (EMM 2020), Postgraduate Institute of Science, University of Peradeniya, Sri Lanka,p.50.
5. Sumudumali, R.G.I., Piyathilake, I.D.U.H., Randika, J. L. P. C., Jayawardana, J. M. C. K., Udayakumara, E. P. N. and Gunatilake, S. K. (2020), Farmers’ knowledge, perception, and practices on agrochemical usage in upper Uma Oya and Kumbukkan Oya watersheds in Sri Lanka’, International Conference on Applied and Pure Sciences (ICAPS 2020), Faculty of Science, University of Kelaniya, Sri Lanka, p.35.
6. Sumudumali, R.G.I., Piyathilake, I.D.U.H., Randika, J. L. P. C., Jayawardana, J. M. C. K., Udayakumara, E. P. N. and Gunatilake, S. K. (2020), Agrochemical usage and farmers perception on selecting pesticides in Upper Kumbukkan Oya Watershed in Sri Lanka, Interdisciplinary Conference of Management Researchers 2020, Faculty of Management Studies, Sabaragamuwa University of Sri Lanka, 26^th November 2020.
7. Randika J.L.P.C., Bandara P.K.G.S.S., Soysa H.S.M., Ruwandeepika H.A.D., Gunatilake S.K. (2020). Isolation of Fenobucarb Resistant Bacteria from Agricultural Soils in Belihuloya, Sri Lanka. [Abstract] In: Proceedings of the International research conference of Uwa wellassa University of Sri Lanka, Badulla, Sri Lanka. pp. 242.
8. J.L.P.C. Randika, P.K.G.S.S. Bandara, H.S.M. Soysa, H.A.D. Ruwandeepika and S.K. Gunatilake (2020). A Review of the Importance of Soil Microorganisms for Bioremediation of Pesticides [Abstract] In: Proceedings of the International conference on Environmental Monitoring and Management – (EMM 2020); 2020 Octomber 23; University of Peradeniya, Peradeniya, Sri Lanka. pp. 65.
9. Piyathilake, I.D.U.H., Sumudumali, R.G.I., Randika, J.L.P.C. Udayakumara, E.P.N., Ranaweera, L.V. & Gunatilake, S.K. (2020), ‘Statistical Correlation between Soil Erosion and the Prevalence of Chronic Kidney Disease of Uncertain Etiology (CKDu) in Uva Province, Sri Lanka’ Annual Research Session, 2020, Sabaragamuwa University of Sri Lanka.
10. Sumudumali R.G.I, Piyathilake I.D.U.H, Randika J.L.P.C., Udayakumara E.P.N. Jayawardhana, J.M.C.K., and Gunatilake S.K (2020), Agrochemical Usage and Farmers Perception on Selecting Pesticides in Upper Uma Oya Watershed in Sri Lanka, , International Forestry and Environment Symposium 2020
11. Sumudumali R.G.I, Piyathilake I.D.U.H, Randika J.L.P.C., Udayakumara E.P.N. Jayawardhana, J.M.C.K., and Gunatilake S.K (2020), Farmers knowledge and perception of pesticide exposure towards health and environmental hazards in selected areas in Uva province, Sri Lanka, Annual Research Session, 2020, Sabaragamuwa University of Sri Lanka.
12. Randika J.L.P.C., Piyathilake I.D.U.H., Sumudumali R.G.I, Bandara P.K.G.S.S., Soysa H.S.M. and Gunatilake S.K. (2020), ‘A survey on Pesticide Use and Safety Practices among Farmers in Uva Province of Sri Lanka’ Annual Research Session, 2020, Sabaragamuwa University of Sri Lanka
13. Piyathilake, I.D.U.H., Udayakumara, E.P.N. & Gunatilake, S.K. (2020), ‘Assess Carbon Stocks in Uva Province of Sri Lanka Based on InVEST Carbon Storage and Sequestration Model’, International Forestry and Environment Symposium 2020
14. Gunatilake, S.K. and Udeshani, W.A.C.(2019). Suitability of Groundwater for Drinking Purposes Using Water Quality Indices in CKDU Prevalence Areas in Sri Lanka, 2^nd international conference on Future on Women’19, February, Colombo, Sri Lanka.
15. W.A.C. Udeshani and S.K. Gunatilake (2019).Seasonal Groundwater Quality Variation in Monaragala District of Sri Lanka, International Research Conference of Uva Wellassa University 2019 (IRCUWU-2019), January, Uwa University, 2019
16. W.A.C. Udeshani and S.K. Gunatilake (2019). Assessment of Drinking Water Quality in Monaragala District in Sri Lanka, RISCON-2019, University of Ruhuna, Sri Lanka, p.
17. Charitha Udeshani, Kasun Dissanayake, Sunethra Gunatilake (2018). Assessment of the Contamination of Heavy Metals in Groundwater in Monaragala District, Sri Lanka, ARS-2018, Sabaragamuwa University of Sri Lanka, 2018.p
18. Udeshani, W.A.C., Dissanayake, H.M.K.P., Gunatilake, S.V., Gunatilake, S.K.(2018). Assessment of groundwater quality in chronic kidney disease unknown (CKDu) prevalance area using groundwater indices, CKDu conference, University of Peradeniya, December, Sri Lanka.p
19. Udeshani, W.A.C., Dissanayake, H.M.K.P., Wimalasiri, W.E. Gunatilake, S.V., Gunatilake, S.K.(2018).Application of water quality index for groundwater quality assessment in CKDu area in Sri Lanka. RISCON-2018, PGIS congress, University of Peradeniya, Sri Lanka. p
20. Rajapaksha, R.P.S.K., Madawala, H.M.S.P., Gunatilake, S.K., Ratnayake, R.R. Soil organic carbon content and its’ effect on available soil nutrients in Knuckles Conservation Forest of Sri Lanka. 2nd International conference on Climate Change. Colombo, Sri Lanka. February 15-16, 2018.
21. Rajapaksha, R.P.S.K., Madawala, H.M.S.P., Gunatilake, S.K., Ratnayake, R.R. Soil nutrient availability in different vegetation types of Kunckles conservation forest in Sri Lanka. International Research Symposium on Pure and Applied Sciences. Faculty of Science, University of Kelaniya, Sri Lanka. October 20, 2017. (ISBN: 978-955-704-061-5).
22. Rajapaksha, R.P.S.K., Madawala, H.M.S.P., Gunatilake, S.K., Ratnayake, R.R. Estimation and mapping the spatial distribution of soil carbon stores: A study from Tropical Forest Reserve in Sri Lanka. 6th International Symposium on Soil Organic Matter. Harpenden, United Kingdom. September 3-7, 2017.
23. Rajapaksha, R.P.S.K., Madawala, H.M.S.P., Gunatilake, S.K., Ratnayake, R.R. Assessment of soil C stocks among different landuse types in Knuckles Forest Region, Sri Lanka. Frontiers in Earth and Climate Sciences. A Conclave of Young Scientists in Central and South Asian Region. Bengaluru, India. December 5 - 7, 2016.
24. Rajapaksha, R.P.S.K., Madawala, H.M.S.P., Gunatilake, S.K., Ratnayake, R.R. Soil carbon fractions in different landuse types of Lakegala area in the Knuckles Forest of Sri Lanka. Wayamba International Conference, Wayamba University of Sri Lanka, Kuliyapitiya, Sri Lanka. August 19 - 20, 2016.
25. Rajapaksha, R.P.S.K., Madawala, H.M.S.P., Gunatilake, S.K., Ratnayake, R.R. (2015). Soil organic carbon fractions in disturbed and undisturbed forest sites in Riverston area of Knuckles Forest Region. PGIS Research Congress, University of Peradeniya, Peradeniya, Sri Lanka, October 9 - 10, 2015.
26. R.B.K. Ranawaka, R.P.S.K. Rajapaksha, S.K. Gunatilake, E.P.N. Udayakumara, R.R. Ratnayake (2016). Characterization of humic substances in paddy soils under different cropping systems in the dry zone of Sri Lanka, Proceeding of the PGIS Research Congress 2016, University of Peradeniya. P.25
27. Dissanayake HMKP Gunatilake SK Basnayake BFA (2016) Developing the laboratory scale biological, physical and chemical methods for treat the dumpsite leachate. Proceedings Wayamba University of Sri Lanka, WinC 2016, 19-20 August 2016, Wayamba University of Sri Lanka, p 239.
28. Rajapaksha RPSK Madawela HMSP Gunatilake SK Rathnayake RR(2016). Soil carbon fractions in different land use types of Lakegala area in the Knuckles forest of Sri Lanka, Proceedings Wayamba University of Sri Lanka, WinC 2016, 19-20 August 2016, Wayamba University of Sri Lanka, p 255.
29. Gunatilake SK (2016). Suitability of Sawdust and Rice Straw biochar pyrolized at low temperature for the removal of heavy metals from industrial wastewater, 25^th Symposium on Environmental chemistry, program and abstracts organized by Japan Society for Environmental Chemistry, TOKI MESSE Niigata Convention Center, Niigata University, p.94
30. Rajapaksha RPSK Saputhanthri SD Madawala HMSP Gunatilake SK and Rathnayake RR (2016). Soil C sequestration of forest-cardamom systems in Knuckles Forest Range, Sri Lanka. 16^th Conference of Science Council Asia, Colombo, Galadari, Sri Lanka, p.248
31. R.T. Rubasinghe, S.K. Gunatilake (2016). Bioavailability of major and trace elements in paddy soils from different climatic zones of Sri Lanka, International Conference on Pollution Control & Sustainable Environment, 4:2 (supply),Dubai, p. 83.
32. R.P.S.K.Rajapaksha, S.D. Saputhanthri, R.R. Rathnayake, S.K.Gunatilake, H.M.S.P. Madawala (2015). Soil carbon sequestration and nutrient status of different landuse types in Knuckles mountain range, Sri Lanka, 20^th International Forestry and Environment Symposium -2015,Club Hotel Deophin, Negombo, Sri Lanka, p.110.
33. S.K. Gunatilake, and Rohana Chandrajith , (2014) Low Cost Biosorbents from Agricultural Wastes to Remove Heavy metals from Industrial Wastewater, 2^nd International Conference on Contaminated Land, Ecological Assessment and Remediation (CLEAR 2014) , Chuncheon, Korea, 05-08^th October 2014.p217.
34. R.T.Rubasinghe, S.K.Gunatilake, R.Chandrajith (2014). Geochemical characterization of groundwater in different climatic zone of Sri Lanka, Proceeding of the Peradeniya University International Research Session, Cri Lanka, v18, 4-5^th July 2014.p11
35. Ruvini Rubasinghe, S.K. Gunatilake, and Rohana Chandrajith (2014). Hydrogeochemical Characterization of Groundwater in the Dry zones Sri Lanka, 2nd International Symposium organize by the Sri Lanka Academy Of Young Scientists (SLAYS) , Institute Of Fundamental Studies (IFS), 12-13November 2014. p56.
36. N.Madanayake, L.N.Jayakody, S.K.Gunatilake, B.F.A.Basnayake (2010). Optimization of rice straw hydrolysis to convert lingo-cellulose to simple sugars (AS-II-24).Third international Symposium, Sabaragamuwa University of Sri Lanka, p.126.
37. A.C.Shamendra, S.S.R.M.D.H.R. Wijesekara, S.Gunatilake, W.W.C.K.Chandrasekara, B.F.A.Basnayake, (2010). Modification and evaluation of the up-flow methanogenic phase reactor for domestic biogas plant (GEN-II-24). Third international Symposium, Sabaragamuwa University of Sri Lanka, p.41.
38. A.L.Atapattu, S.K.Gunatilake (2009). The effect of Human Causes to Landslides Using GIS Technology, First National Symposium on Natural Resources Management NRM-2009, Sabaragamuwa University of Sri Lanka, p.22.
39. L.M.M.U. Lekammudiyanse, S.Malavipathirana and S.K. Gunatilake (2009). Evaluation of Biodegradabiligy of Anionic Surfactants with Respect to Linear Alkylbenzene Sulfonates and some of Retardation Attributes. First National Symposium on Natural Resources Management NRM-2009, Sabaragamuwa University of Sri Lanka, p.63.
40. L.M.M.U. Lekammudiyanse, S.K. Gunatilake and A.D.Prematilake (2009). Evaluation of the Effectiveness of Compost Bin as a Household Waste Management Technique: a case study in Gampaha Municipal Council Area, First National Symposium on Natural Resources Management NRM-2009, Sabaragamuwa University of Sri Lanka, p.68.
41. Gunatilake, S.K., Iwao, Y., Gunatilake, J. (2002). Contamination of shallow groundwater by intensive use of fertilizers to the adjacent paddy fields in rural areas of Sri Lanka, Proceedings of the Ninth Congress of the International Association for Engineering Geology and the environment, September 16-20, 2002, Durban, South Africa. p.236.
42. Gunatilake SK, Iwao Y, Gunatilake J (2002) Variation of Nitrate Concentration in Shallow Groundwater in Paddy Cultivated Area of Shiroishi in Saga, Japan, Proceedings of the Ninth Congress of the International Association for Engineering Geology and the environment, September 16-20, 2002, Durban, South Africa. p.237.
43. Iwao, Y and Gunatilake, S (2000) Variation of Nitrate in Groundwater Due to Application of Nitrate Fertilizer (A Case Study from Sri Lanka), International Workshop on Engineering Geology and Environmental Planning including an International Symposium on Mineral Resources, BGR, Stilleweg 2, Hannover, Germany.

1. S.K.Gunatilake (2016). Improvement of the existing Integrated Leachate Treatment System in Gohagoda Dumpsite in Kandy in Sri Lanka. 3^rd International Conference on Social Sciences 2016 (3^rd ICSS 2016), organized by Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, 01^st October 2016.
2. S.K.Gunatilake (2016). Comparative study on the adsorptive behaviour of Ss (III) and Cr(III) ions from aqueous solution on to saw dust and rice husk biochar.. 3^rd International Conference on Social Sciences 2016 (3^rd ICSS 2016), organized by Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, 01^st October 2016.
3. S.K. Gunatilake (2016). Suitability of surfacewater and groundwater in dry zone in Sri Lanka for irrigation and domestic purposes, 16^th Conference of Science Council Asia, Colombo, Galadari, Sri Lanka, pp138.
4. S.K.Gunatilake, Y. Iwao, J.K.Gunatilake, S.S.Samaratunga (2013). Comparison of Effects of Fertilization on Groundwater contamination in Agricultural Areas: Sri Lanka and Japan, Conference on Sri Lanka-Japan Collaborative Research 2013 (SLJCR-2013), University of Peradeniya, p 53.
5. S.K. Gunatilake, Y. Iwao, J.Gunatilake, and D. Kumaragamage, (2006). A Comparison of Nitrate Distribution in Shallow Groundwater of Two Agricultural Areas in Sri Lanka and in Japan. The 10th Anniversary International Symposium, 4-8 July, 2006, Sabaragamuwa University of Sri Lanka, Sri Lanka, p.17.

Book Chapters

1. B. M. R. L. Basnayake, D. Achini M. De Silva, S. K. Gunatiliake, R. H. N. Rajapaksha M. Sandamith, and I.Wickramarathna (2021). Co-Management Initiatives in Bush Fire Management—A Case of Belihuloya Mountain Range, Sri Lanka, Multi-hazards early warning and disaster risks, Editors, Dilanthi Amarathunga, Richard Haigh, Nuwan Dias, ,pp. 443-455,  ISBN 978-3-030-73002-4 ISBN 978-3-030-73003-1 (eBook) https://doi.org/10.1007/978-3-030-73003-1

Monographs

Monograph on Simplified extraction method of metribuzin from minimal salt medium broth and quantification using GC-MS

Authors: J.L.P.C. Randika, P.K.G.S.S. Bandara, H.S.M. Soysa, M.G.A.N. Perera, H.A.D. Ruwandeepika, S.K. Gunatilake

ISBN:978-624-5727-17-9

Publisher: Sabaragamuwa University of Sri Lanka

BOOKS

Gunatilake, S.K. (2016) Get energy from waste. Lambert Publisher, Germany, 66 pp. ISBN 978-3-330-0104-6 (Lambert publisher is an international recognized publisher)

CKDu (published by Author – Other publisher)

Science book for O/L students (published by Author – Other publisher)