Search result(s): 61 - 75 of 620 » Department » Engineering

chromium removal from cheltech (zaria) tannery effluent as a form of effluent treatment

Chrome is an indispensable input in chemical tanning of pelt. For mass transfer reasons, not more than 80% of the chrome feed is absorbed by the leather leaving a balance of over 20% in the effluent. This leads to material loss if disposed untreated. In addition, the attendant possible oxidation of chromium (III) to chromium (VI) (in the presence o... Continue Reading

Engineering

improvement of the performance of an existing fatliquor pilot plant

Experimental and theoretical investigations were conducted on an existing sulphation pilot plant facility for production of leather lubricant, sulphated oil popularly known as fatliquor. This was carefully and critically done to evaluate the performance of the plant in respect of attaining the required process conditions. These include maintaining ... Continue Reading

Engineering

influence of fines content on water and chemical flows through compacted lateritic soil liners

Compacted clay liners are an integral component of the lining systems for covering or capping new or old landfills or waste impoundments. As the use of laterites that is widespread in the tropics, for waste contaminant has not been quite documented, this study was aimed at assessing the influence of fines content on water and chemical flows through... Continue Reading

Engineering

evaluation of neem (azadirachta indica), tiger nut (cyperus esculentus) and false walnut (canarium schweinfurthii) oils as metal working lubricants

Performance evaluation of neem, tiger nut and false walnut oils with respect to their effectiveness in friction reduction in cold mild steel drawing and cold aluminum rolling operations have been carried out in this research work. While a 500 kN Denison machine was improvised for use in lieu of a laboratory draw bench for the wire drawing operation... Continue Reading

Engineering

comparative study of different honeycomb geometries for the suppression of convective heat transfer in flat plate solar collectors

The performance of different honeycomb geometries have been compared experimentally in four identical solar water heaters equipped with circular, square and rectangular cell honeycomb structures while the fourth solar water heater was without honeycomb. The collector with circular, square and rectangular honeycomb collected 19.32%, 9.78% and3.0% mo... Continue Reading

Engineering

up-grading of agbado-okudu iron ore using magnetic separation and shaking table techniques

The beneficiation of the Agbado Okudu iron ore deposit located in Kogi State, Nigeria was investigated. The investigation involved determining the chemical composition and mineralogical characteristics of the run-of-mine. Followed by determination of the work index of the ore and then separation tests using shaking table, magnetic technique and a c... Continue Reading

Engineering

illumination design and simulation for outdoor sporting arenas

Widespread demand for sporting activities in the night has led to the integration of lighting design in the development of sporting arenas due mainly to lower temperatures at night, increase in demand for sporting facilities and leisure considerations. Illumination of sporting arenas is essentially based on floodlighting. In this thesis the design ... Continue Reading

Engineering

traffic analysis of a mobile switching centre

(A CASE STUDY OF Celtel Plc LAGOS)

The efficient task of network management which ensure proper monitoring and controlling of certain network parameters to enable performance evaluation is a primary concern of the services providers in global system of mobile telecommunication. A sampled of Celtel network traffic data in Lagos area, indicating subscriber’s demands and responses fo... Continue Reading

Engineering

sintering characteristics of itakpe and agbaja iron ore concentrates blends

This research investigated the sintering characteristics of sinter blends produced from Agbaja iron ore concentrate of high phosphorus (P2O5 = 1.50 �“ 2.14%) and low silica content and Itakpe iron ore concentrate of low phosphorus (P = 0.03%) and high silica in order to produce fluxed sinters suitable for pig iron production. The ores (Agbaja and ... Continue Reading

Engineering

quick response travel demand modelling

(A CASE STUDY OF ZARIA)

Internal Volume Forecasting Technique is one of the several methods of Quick Response Travel Demand technique. This thesis reviewed the various techniques used in travel demand modelling and demonstrated the application of the Internal Volume Forecasting technique towards deriving a travel demand model for Zaria. The study successfully validated th... Continue Reading

Engineering

influence of compression ratio on the performance characteristics of a spark ignition engine

The need to improve the performance characteristics of the gasoline engine has necessitated the present research. Increasing the compression ratio below detonating values to improve on the performance is an option. The compression ratio is a factor that influences the performance characteristics of internal combustion engines. This work is a an exp... Continue Reading

Engineering

evaluation of three nigerian fibre sources for pulp and paper production

This investigation was carried out in an effort to search for raw materials to replace the presently imported long fibre pulp for the production of pulp and paper in Nigeria. Three fibre sources namely;silk cotton tree,bagasse and rice straw were investigated. Maceration process of pulping was used to pulp these raw materials and paper samples were... Continue Reading

Engineering

evaluation of water advance models for furrow irrigation system

The problems of on-farm water management and irrigation system design parameters which are often chosen with limited or no analysis of a unique local condition leads to the poor performance of most irrigation systems today. In this study, three furrow irrigation water advance models, referred to as Walker and Skogerboe model, Michael’s advance mo... Continue Reading

Engineering

reliability assessment of rc continuous beam designed to bs 8110 (1985) criteria

The provision of a safe structural system is an object of structural design. Therefore the way safety is prescribed in design is concern for Engineers. It is generally agreed in codified designs that decisions are made under uncertainties and as such safety consideration is best done in a probabilistic format. It is only in this way that consistent... Continue Reading

Engineering

an economic consideration of pavement overlay design strategies

(A CASE STUDY OF BAUCHI �“ JOS ROAD)

Pavement deterioration is revealed through many indications, among which is roughness of its surface which is a collective consequence of the various deterioration factors of the pavement. The economic impact of road deterioration is considerable, and usually outweighs the consideration of riding comfort, and thus providing the strongest objective ... Continue Reading

Engineering

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