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Browsing Research Publications by Author "Ratnayake, AS"

Now showing items 1-11 of 11

Dynamics of the Madu-Ganga Estuary

De Silva, UHNH; Somasiri, RBHP; Jayasekara, NNL; Ratnayake, AS; Dushyantha, N; Weththasinghe, SM; Samaradivakara, GVI; Vijitha, AVP; Ratnayake, NP [Conference Full-text]

Among the estuaries in Sri Lanka, Madu-Ganga Estuary plays a significant role to generate a massive income through tourism. The existing tropical ecosystem attracts the tourists. However, this ecosystem faces problems of ...
The efficiency of iron oxide removal from laterite for industrial applications

Goonetilleke, WALAT; Ratnayake, AS; Jayawardena, DT [Conference-Abstract]

Laterite is used as the main alumina source for cement manufacturing process of some countries, and it decreases the lifespan of limestone deposits due to the high Fe content. This study focuses on the removal of iron ...
Geochemical approach of phosphate mineral exploration in lake sediments around Eppawala phosphate deposit, Sri Lanka

Dushyantha, NP; Hemalal, PVA; Jayawardena, CL; Ratnayake, AS; Ratnayake, NP [Conference-Abstract]

Mineral exploration is a stochastic process of finding and locating commercially viable mineral resources. In this regard, lake sediment is an important material in exploration as it contains three distinct types of ...
Geochemical exploration for prospecting new rare earth elements (REEs) sources

Dushyantha, N; Ratnayake, N; Premasiri, R; Batapola, N; Panagoda, H; Jayawardena, C; Chandrajith, R; Ilankoon, IMSK; Rohitha, S; Ratnayake, AS; Abeysinghe, B; Dissanayake, K; Dilshara, P [Article-Full-text]

Rare earth elements (REEs) are globally considered as critical elements due to their indispensable applications in various high-tech industries. With the ever-increasing demand, identified primary REE resources will not ...
Middle to late Holocene environmental changes in the depositional system of the tropical brackish Bolgoda Lake, coastal southwest Sri Lanka

Ratnayake, AS; Sampei, Y; Ratnayake, NP; Roser, BP [Article-Full-text]

The tropical Bolgoda Lake is one of the largest lagoonal estuaries in Sri Lanka. Organic constituents in this lake were investigated using 28 surface sediments, three cores from the lake, and four short cores from mangrove ...
Nearshore sediment dynamics in Sri Lanka

Ratnayake, AS; Weththasinghe, SM; Dushyantha, N; Premasiri, HMR; Ratnayake, NP [Conference Full-text]

Coastal environment is a unique morphodynamic system for diverse changes. The present study estimated coastal morphodynamic changes and sediment transportation directions at locations of Uswetakeiyawa beach nourishment ...
Prospecting for unconventional phosphate sources in lake sediments around Eppawala phosphate deposit, Sri Lanka

Dushyantha, NP; Hemalal, PVA; Jayawardena, CL; Ratnayake, AS; Ratnayake, NP [Conference-Abstract]

Phosphate fertilizer is an important input in agriculture, in the scenario of increasing food demand with the population increase. Global rock phosphate reserves are finite and exhaustible. This leads to the search for ...
Sea-level inundation and risk assessment along the south and southwest coasts of Sri Lanka

Palamakumbure, L; Ratnayake, AS; Premasiri, HMR; Ratnayake, NP; Katupotha, J; Dushyantha, N; Weththasinghe & W. A. Panchala Weerakoon, S [Article-Full-text]

Global sea-level changes have been a major topic among scientists. Sea-level changes are not globally uniform. Reconstruction of paleo sea-level changes and monitoring of variations in regional sea-level are important to ...
Socio-geological impact of Uma Oya multipurpose development project, Sri Lanka

Gunawardana, KDC; Jayasingha, P; Ratnayake, AS [Conference-Abstract]

Uma Oya Multipurpose Development Project consists of a 23 km long trans-basin tunnel which is to be built to generate hydropower and provide water to Hambanthota area. However, implementation of this project has caused ...
Structures of water column and sediment sub-bottom in the Tangalle Bay, Sri Lanka

Weththasinghe, SM; Ratnayake, AS; Dushyantha, N; Ratnayake, NP; Samaradivakara, GVI; Vijitha, AVP [Conference Full-text]

Water quality parameters and local morphology are important for monitoring aquatic life, and for planning any coastal development project. So far, few studies have been carried out in Sri Lanka for identifying water ...
The upgradability of beach ilmenite found in Sri Lanka by mechanically activated carbothermic reduction

Wijewardhana, TDU; Ratnayake, AS [Conference-Abstract]

A large amount of high-quality titanium ore minerals are required for future development of the titanium industry. Although ilmenite (FeTOs) is a type of low-grade titanium ore, it has a significant utility value in the ...

Now showing items 1-11 of 11

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Browsing Research Publications by Author "Ratnayake, AS"

Browsing Research Publications by Author "Ratnayake, AS"

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