Bioremediation for water purification – A case study at St. Coombs Lake, Talawakelle
Friday, January 18th, 2008Phytoremediation is one of the most eco friendly and innovative techniques to remove pollutants from soil and water in agricultural areas. This study explored potentials of bioremediation for water purification at Tea Research Institute of Sri Lanka through monitoring water quality of St. Coombs lake and through several glasshouse and laboratory experiments for validating the [...]
Effects of some water quality parameters and some metals on osmoregulation of Oreochromis mossambicus in Bolgoda lake
Friday, January 18th, 2008The present study was carried out in Bolgoda Lake at Attidiya, Borupona and Dampe from September 2005 to January 2006 with the objective of studying the effect of some water quality & some heavy metals on Osmoregulation of Oreochromis mossambicus. Only the Dissolved Oxygen and Transparency showed significant difference among measured water quality parameter within [...]
Status of heavy metal pollution in the Lunawa lagoon
Friday, January 18th, 2008Distribution of five types of heavy metals in the Lunawa Lagoon (Colombo District) was investigated from April to June 2006. Water and bottom sludge samples were obtained at fortnight intervals from nine sampling stations of the lagoon including three drains (Northern, Eastern and Uyana). Water samples were preserved by adding Conc. HNO3 (Analytical Grade) to [...]
Colour removal and its mechanisms in textile wastewater treatment by UASB reactor system with anaerobic granular sludge
Friday, January 18th, 2008Textile wastewaters generated from different stages of textile processing contain various toxicants or pollutants that are seriously harmful to natural aquatic environment when released without proper treatment. Although there are different methods, which can be adopted for the treatment of textile wastewater, biological approaches are considered as environmentally friendly, low cost and effective methods over [...]
Assessment of the impact of diuron to water bodies in the Walawa area
Friday, January 18th, 2008Use of pesticides has significantly increased global food production and it is indispensable in modern agriculture to control weeds, insects, other pests and diseases. As the population increases the use of pesticides also increases. The impact of these pesticides to the environment is not well understood for Sri Lankan conditions. Hence the sorption pattern of [...]
Heavy metals in substrates of a freshwater wetland at Kelaniyas
Friday, January 18th, 2008Many natural wetlands function as successful remediation systems for the environmental impact due to industrial effluents and domestic effluents from urban and semi-urban areas. However, this protective function of natural wetlands often comes at the cost of substantial environmental degradation. Hence, wetland sediment analysis is essential in the assessment of the impact of industrial effluent [...]
Adsorption kinetics of sugarcane bagasse for selective removal of Cr (VI) and Cu (II) from aqueous solutions
Friday, January 18th, 2008The Adsorption Kinetics for the simultaneous and selective removal of Cr(VI) and Cu(II) ions from aqueous mixture was investigated using sugarcane bagasse. Equal volumes of the laboratory prepared metal ion solutions of Cr(VI) and that of Cu(II), having the same initial concentration were mixed and used as test samples. Batch studies were performed at room [...]
Environmental impacts on waste and water disposal from abbatoirs and poultry processing units in Weligama area.
Friday, January 18th, 2008Selling of Meat is one of the popular businesses among the Muslim community in the Weligama area. Therefore, the objective of the present study was to collect baseline data on the waste and water disposal methods and sanitary measures in abattoirs and poultry farms in the area. Selected abattoirs and poultry farms were visited to [...]