ABSTRACT. Specific models for the design of pit latrines of different shapes and sizes are non-existent. What are available are general design guides irrespective of the shape and size of latrine which may not give the actual design parameters needed. Moreover, the physico-chemical and biological characteristics of pit latrine sludge samples investigated by some researchers were limited and could not give the actual situation in the pit latrines. The objectives of this research were to derive...
Abstract The focus of this research work is to derive a model that will be used to obtain the adsorption efficiency of an adsorbent for the removal of lead and copper from waste water. To date, the prevalence of adsorption separation remains an aesthetic attention and consideration abroad the nations owning to its low cost, simplicity of design, ease of operation, insensitivity to toxic substances and complete removal of pollutants even from solutions. The data points for this work were colle...
ABSTRACT Application of Hazard Analysis and Critical Control Point (ITJCCP) of seven species of smoke fish at various locations around Shiroro Lake were evaluated. A Traditional Smoking Kiln and an Improved Traditional Smoking Kiln (control experiment),. This experiment was carried out for a period of sixteen weeks, using six hundred and seventy two(672)samples, sensory evaluation, proximate analysis, microbial identification, heavy metals and and Poly Aromatic Hydrocarbon in thesmoked seven...
ABSTRACT Smallholder farmers in Runyenjes are experiencing decline in agricultural productivity. The yield decline has been caused by degraded soils as a result soil erosion and inappropriate soil management, nutrients mining due to continuous cropping as well as leaching of minerals. To address these crop production challenges, there is need for balanced nutrient management options with appropriate tillage system. This study was therefore carried out under on-farm trials to: i) assess maize...
ABSTRACT This research work was conducted between March 2008 (before start of long rains) and August 2008 (the season for harvesting maize), in Sauri Millennium Village, sub location of Yala division, Siaya district, Kenya. The general objective of this study was the adoption of legume fallows in Sauri millennium village with specific objectives;- (i) To study the current status of legume fallows in Sauri millennium village (ii) To investigate the leguminous tree species for high fuelwood pr...
ABSTRACT Land degradation and declining soil fertility are increasingly being viewed as critical problems affecting agricultural productivity and human welfare in tropical Africa. It is then imperative that improving soil fertility is key entry point for achieving food security, reducing poverty and preserving the environment for smallholder farms in Africa. However, due to high costs of inorganic fertilizers, tackling soil fertility issues thus requires a holistic approach that integrates b...
ABSTRACT Nairobi City County is faced with acute water scarcity. The daily deficit is currently 170,000 m3 /day which accounts for about 23%. This deficit will escalate as population increases. However, streets are often flooded during heavy rains and water harvesting has been neglected. The County relies mainly on surface water sources from Athi River basin, Tana River basin and over 3000 boreholes. The objectives of this study were to assess volumes of rainwater that can be harvested from ...
ABSTRACT Erosion due to water runoff is one of the major factors that lead to poor soil productivity in Sub-Saharan Africa. The increase in population has driven the populace to inhabit marginal frontiers; worsening the erosion problem. This study evaluated the effects of some soil and water conservation (SWC) techniques on soil productivity and bean yield in Nyamasheke District; characterized by steep topography, higher precipitation and intensive agricultural activities. The study was condu...
Abstract This is a sorption study that focused on the use of mica clay mineral grouped into mica untreated, activated mica at 800 °C, mica impregnated separately with iron and aluminium for defuoridation of water. In this study, characterization of adsorbent was done by using XRF and XRD and quantifcation of fuoride by using fuoride ion selective electrode. Characterization of adsorbent showed the presence of SiO2, CaO, P2O5, Fe2O3 and Al2O3 in the adsorbent. XRD exhibited higher compositi...
ABSTRACT Plastic was recognised as the most useful innovation in the 19th century by many scientists for its unique characteristics. However, it has become the biggest environmental hazard in the 20th century when it is disposed as waste. Plastic do not degrade naturally and when it is disposed in an ad hoc manner, it creates numerous environmental problems that can deteriorate the life of flora and fauna. Recycling is one of the most important actions currently available to reduce these imp...
Increase in population and change in lifestyle has created water scarcity in many parts of the country. Microstructures for rainwater harvesting, artificial recharge and reuse of water are becoming more and more popular to solve the local water problems, to mitigate water shortage and improve water quality. The study was conducted to investigate the challenges influencing the implementation of water sector reforms in Cross River State Water Board Limited and to address the poor water quality ...
ABSTRACT Climate and land use are the two most significant factors that influence watershed hydrology globally. The impact of climate variability on streamflow arises from changes in precipitation and temperature, leading to the adjustment of the physical and biological processes of ecosystems. Land use change impact on streamflow however varies across different regions and environments to warrant a universal theory, making it subject of scientific interest to hydrologists. The aim of this st...
ABSTRACT As population continues to increase especially in African and Asian countries, demand for more food is equally increasing. There have been challenges in meeting the food security needs in most countries especially those depending on rain-fed agriculture. Although a number of countries are addressing the shortfall by investing heavily on irrigated agriculture, the availability of irrigation water still remains one of the major challenges. Irrigation has been ranked as one of the activ...
Abstract The research sought to evaluate the water quality within the reticulation system of Kwekwe municipality during the dry and wet seasons and to measure the water quality parameters such as pH, turbidity, total coliforms, free and combined chlorine from the source, final stage of treatment and throughout the distribution system. It also had to consider how distance from one sampling point to another affect the quality of water. It had to consider measurement, the water treatment process...
ABSTRACT In Kenya and other countries in the world, most water treatment works derive their raw water from rivers that flow in a watershed. Lack of proper management of watershed leads to high runoff generated and subsequent flooding downstream leading to damaged infrastructure, pollution and deterioration of water quality. The main aim of this study was to simulate runoff water quality effects and establish a relationship models in three water sheds in Yala basins. The river watersheds consi...