Browsing Department of Environmental Sciences by Issue Date
Now showing items 1-20 of 36
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Geology of the IthangaHills are in Kenya
(Elsevier, 1984)The geology of the IthangaHillsarea is composed of high grade late Precambrian metamorphic rocks of the Mozambique belt, Tertiary (?) volcanics, largely tuffs, that overlie the Mozambiquian rocks unconformably and Recent ... -
Geology of the IthangaHills are in Kenya
(ELSELVIER, 1985)The geology of the IthangaHillsarea is composed of high grade late Precambrian metamorphic rocks of the Mozambique belt, Tertiary (?) volcanics, largely tuffs, that overlie the Mozambiquian rocks unconformably and Recent ... -
The kinetics of dissolution of zircon (ZrSiO4)
(ELSELVIER, 1985)The dissolution of amorphous zircon obeys first order kinetics, and, over long periods of time decreases due to precipitation of new phases from solution. The dissolution reaction has an activation energy of 12.8 K cal/mole. ... -
The kinetics of dissolution of nepheline (NaAlSiO4)
(ELSELVIER, 1986)Nepheline shows first order, congruent dissolution rates, followed by a lowering of the rates due to precipitation of new phases from solution, initially aluminium hydroxides, and later, as the activity of silica in solution ... -
Thermodynamic and kinetic aspects of formation of bauxites.
(ELSELVIER, 1987)Experiments in which cleavage nepheline samples were reacted with aqueous solutions at fixed pH's and temperature were carried out in the laboratory. The chemistry of the solution as a function of time was monitored, as ... -
Lowenthalpygeothermalsystems in Kenya
(ELSELVIER, 1988)The location of Kenya's geothermal fields is shown. The chemistry of the lowenthalpy fields is given and reservoir temperatures estimated from these data. The most promising of these fields are the Mwananyamala, Homa ... -
Stableisotopestudies of some lowenthalpygeothermalsystems in Kenya
(ELSELVIER, 1990)Oxygen and hydrogen isotope compositions of some lowenthalpygeothermalsystems in Kenya have been determined. Plots on View the MathML source versus δD diagrams show that the compositions do not deviate appreciably from ... -
Presentdayoredeposition in the geothermalsystems of kenya—i. the mwananyamalahotsprings, northeast of jombohill, coastprovince
(ELSELVIER, 1990)The Mwananyamalageothermal field extends over an area of 4 km x 11 km in a region of faulted Permo—Triassic sandstones. The sandstones consist of deltaic arkoses, and fluvio-lacustrine shales, siltstones and sandstones. ... -
Geochemicalstudies of the geothermal systems in Kenya: II. The Majimoto geothermal field
(Elsevier, 1992)The Majimoto geothermal field discharges at the boundary between metamorphic schists and gneisses of Precambrian age, and Pleistocene volcanic ashes. The waters are near neutral, low salinity waters. Calculated ... -
Fluid/mineralequilibriumcalculations for geothermalfluids and chemicalgeothermometry
(ELSELVIER, 1993)Aquifer temperatures of 13 geothermal wells in Iceland whose measured reservoir temperatures range from 47 to 325°C have been estimated from the chemical composition of the discharged fluid by considering simultaneously ... -
Geothermalenergy research in Kenya: a review
(ELSELVIER, 1996)Geothermalenergy for electricity generation is likely to become increasingly important in Kenya in the future. There are numerous centres of thermal activity in Kenya, particularly within the Rift Valley, although aridity ... -
Pollution of groundwater in the coastal Kwale District, Kenya
(IAHS,, 1997)Groundwater is a “last-resort” source of domestic water supply at the Kenya coast because of the scarcity of surface water sources. NGOS, the Kenya government, and international aid organizations have promoted the drilling ... -
Groundwater resources and sea water intrusion in Kwale District
(CSA, 1998)This work describes the results of water quality analysis carried out along the coastal plains of Kwale District, Kenya, to determine the influence of sea water intrusion, the relationship between tidal changes and water ... -
CONCENTRATIONS OF H2S IN AIR AROUND THE OLKARIA GEOTHARMAL FIELD,KENYA
(2000-06)Changes in concentration of H2S with distance away from the Olkalia geothermal power station ,and at one discharging well were continuously monitored over periods of up to 11days .The changes inH2S were corrected with ... -
Contamination of Groundwater Resources by Pit Latrines in Kwale District, Kenya
(African Journals Online, 2001)Waters from springs, wells and boreholes were analysed for chemical and biological quality. Although most of the waters were found to be chemically suitable for drinking, 69% of the wells, 30% of the springs and 13% of the ... -
Organochlorine and organophosphorus pesticide concentrations in water, sediment, and selected organisms in Lake Naivasha (Kenya)
(Spingerlink, 2002)Water, sediment, red swamp crayfish (Procambarus clarkii) and black bass (Micropterus salmoides) from Lake Naivasha were analyzed for selected organochlorine and organophosphorus pesticide residues. The mean p,p'-DDT, ... -
The Contribution of Drinking Water towards Dental Fluorosis: A case study of Njoro Division, Nakuru District, Kenya
(2002)This study was carried out to measure the fluoride levels of water consumed in the Njoro division of Nakuru district, Kenya. The sources of drinking water, methods of water storage and utilisation, as well as the perceptions ... -
The Potential of Geothermal Systems in Kenya for Balneological Use
(springerlink, 2002)Curative properties of geothermal waters are highly valued in several countries around the world, including China, Iceland, and middle and Eastern European states. Natural hotsprings and fumaroles found in various parts ... -
The Potential of Geothermal Systems in Kenya for Balneological Use
(Spingerlink, 2002)Curative properties of geothermal waters are highly valued in several countries around the world, including China, Iceland, and middle and Eastern European states. Natural hotsprings and fumaroles found in various parts ... -
The Fate of Chloroacetanilide Herbicides and Their Degradation Products in the Nzoia Basin, Kenya
(Royal Swedish Academy of Sciences, 2003-09)Alachlor, metolachlor and their respective environmentally stable aniline degradation products, 2,6-diethylaniline and 2-ethyl-6-methylaniline were analyzed in water and sediment samples from 9 sites along River Nzoia, ...