Optimising a solvent system for lipid extraction from cyanobacterium Microcystis spp.: future perspective for biodiesel production

Author: D.A.T. Madusanka and Pathmalal M Manage
Journal: Journal of National Science Foundation

Due to unsustainability of petro derived fuels, the world is now concerned about alternative, sustainable and eco-friendly energy production. As a successful alternative energy, biodiesel plays a major role to replace petrodiesel.



Visited one of the most advanced research vessels, Dr. Fridtjof Nansen

One of the most advanced research vessels in the world, the Dr. Fridtjof Nansen, arrived in Colombo to conduct surveys on fisheries resources and the marine ecosystem around Sri Lanka on 21.06.2018 and the Aquatic students of the Department of Zoology, University of Sri Jayewardenepura got a chance to visit this research vessel on 23.06.2018.

The research vessel Dr. Fridtjof Nansen is owned by the Norwegian Agency for Development Cooperation (Norad) and is jointly operated by the Norwegian Institute of Marine Research (IMR) and FAO.

Evaluation of Well water quality with special emphasis on Principal Component Analysis (PCA) at Maharagama, Sri Lanka

Author: GSS Ganegoda, Pathmalal M Manage and S Pathirage
Journal: Journal of Ecotechnology Research

In the present study 800 well water samples were collected from five Grama Niladhari (GN) divisions situated in Maharagama, Sri Lanka. The area is highly populated and urbanized with a very shallow ground water table. Ground water quality was analyzed and compared with different GN divisions identifying well water contamination pattern using Principal Component Analysis (PCA).


Heavy metal contamination status in seven fish species from reservoirs of Polonnaruwa district, Sri Lanka

Author: Hiran Wijesinghe, F. Sumaiya Idroos and Pathmalal M Manage
Journal: Sri Lanka Journal of Aquatic Sciences

Heavy metal contamination in aquatic ecosystems has become an emerging environmental issue. The stable physicochemical properties of heavy metals could result in bioconcentration and bioaccumulation in different organs of freshwater fishes. The present study records the accumulation of Lead (Pb), Cadmium (Cd), Chromium (Cr), Copper (Cu) and Zinc (Zn) in the head, muscle and skin regions of seven fish species namely, Labeo rohita, Oreochromis mossambicus, Oreochromis niloticus, Etroplus suratensis, Heteropneustes fossilis, Oligolepsis acutipennis and Puntius dorsalis collected from Minnerya, Parakrama Samudraya and Kaudulla reservoirs in Polonnaruwa district, Sri Lanka.