October 2011
Tamu Kijani Harakati
October 2011
Potential impacts of climate change and variability on groundwater resources in Nigeria
Climate change observed over the past decades has been consistently associated with modifications of components of the hydrological systems such as precipitation patterns, sea surface temperature, accelerated melting of glacier and ice caps, soil temperature and moisture, surface runoff and stream flow. Such changes are known to influence subsurface hydrological systems, which could lead to changes in...
October 2011
Impact of substrate amendment on the polyaromatic hydrocarbon contents of a five month old waste engine oil polluted soil
The present study investigated the impact of substrate amendment on the bioremediation of waste engine oil-polluted soil. Top soil was collected randomly from a 50 × 50 m marked plot on a farmland, sun-dried and weighed. Ten kilogram’s of soil each was placed into perforated 25 L buckets. Waste engine oil (WEO) was prepared at 5 different levels of pollution: 0, 1.0, 2.5, 5.0, and 10.0% w/w, and...
October 2011
Behaviours of MeCl2 (Me: Pb and Cd) during thermal treatment of kaolin-lime mixture
This paper reports the emission behaviours of Pb and Cd during heat treatment of their chloride salts with kaolin-lime and kaolin-lime-silica mixtures. The leaching behaviours of Pb and Cd from the heat-treated products are also assessed. The results showed that the addition of lime into kaolin increased the emitted amounts of Pb and Cd during heating. Addition of silica into the mixtures further...
October 2011
Assessment of ground water pollution in the residential areas of Ewekoro and Shagamu due to cement production
Chemical and physico–chemical parameters of ground water samples from wells were analyzed by multivariate statistical tools to provide the characterisation of the ground water distribution of the settlements around cement factories in Ewekoro and Shagamu, Ogun State in Nigeria. The 17 parameters determined include: pH, conductivity, dissolved oxygen (DO), total dissolved solids (TDS), biochemical oxygen demand...
October 2011
Geoelectrical investigation and hydrochemical analysis of groundwater in a waste dump environment, Isolo, Lagos
Geoelectrical and hydrochemical analysis of groundwater in a waste dump environment was carried out to investigate the effect of the infiltrations of leachates and other sources of pollution from waste dump on groundwater. This was done by engaging the vertical electrical sounding method and laboratory water sample analysis. An Abem SAS 3000 terrameter was used to acquire the geophysical data from...
October 2011
Identification of future environmental challenges in Pakistan by 2025 through environment foresight
Technology foresight is defined as “the process involved in systematically attempting to look into the longer term future of science, technology, the economy and society with the aim of identifying the areas of strategic research and the emerging generic technologies likely to yield the greatest economic and social benefits.” Technology foresight on environment sector was carried out under...
October 2011
Analysis of the measured medical waste generation rate in Tanzanian district hospitals using statistical methods
In this study the medical waste generation rates at Amana and Ligula hospitals were measured and analyzed. The rate of medical waste generation is high; about 2,250 kg/day in Amana and 2,500 kg/day in Ligula hospital. The waste generation rate per patient per day is also high about 1.8 (Amana) and 2.0 (Ligula) kg/patient.day. The daily medical waste generation rate is not constant,...
October 2011
Achieving food security and climate change mitigation through entrepreneurship development in rural Nigeria: Gender perspective
Globally, problem of food security and climate change demands innovative strategies that seek to promote an integrated approach of supporting the full continuum of production, processing and marketing of food to be done. For this reason this paper contends that rural entrepreneurial development could serve as panacea to achieving food security...
October 2011
Species diversity and abundance of wild birds in Dagona-Waterfowl Sanctuary Borno State, Nigeria
The study of bird species diversity and richness in Dagona-Waterfowl sanctuary was carried out in early wet and late dry seasons. This was to provide some information on the wild birds of the sanctuary. Dagona sanctuary is located within the Bade-Nguru wetland sector; it is one of the important bird areas strategized for the conservation of avifauna species in Sub-Sahara region,...
October 2011
Performance of Solanum incunum Linnaeus as natural coagulant and disinfectant for drinking water
The paper reports the performance of Solanum incunum Linnaeus as coagulant and disinfectant for water purification. The coagulation-flocculation experiment was carried out using a Phipps and Bird PB- 700TM Jar Tester. Results show that coagulation depends on Fe(II) content and disinfectant on bioactive natural product compounds from the plant. Turbidity removals were 96, 97 and 75%...
October 2011
Assessment of landscape change and occurrence at watershed level in city of Nairobi
To ecologically manage urban spaces, it is necessary to understand changes in spatial configuration of land uses within definitive ecosystem level processes. Change in landscape cover types and pattern within Nairobi city and its environs were investigated using landsat satellite data spanning three decades. Image data were georeferenced, classified and analyzed along watershed zones...
October 2011
Response of lettuce to Cd-enriched water and irrigation frequencies
This pot experiment was an attempt to investigate a broad response of lettuce to different cadmium (Cd) levels of irrigation water (0, 5, 10 and 20 mg L-1) under different irrigation intervals (1, 2 and 4 days). The results showed that increased level of soil Cd through irrigation eventually decreased the yield of lettuce in all cases; however, in some cases yield was increased with...
Advertisement
Advertisement
