Masters theses : Science
Permanent URI for this collectionhttps://repository.neelain.edu.sd/handle/123456789/12103
Browse
3 results
Search Results
Item TREATMENT OF PRODUCED WATER FROM ADAR—YLE CRUDE FOR WELL INJECTION(Neelain University, 2008) Mohamed Abd Elrahim MohamedThe main purpose of this thesis is to suggest a water treatment unit for treating the water produced from crude oil in Adar-yle field and recycle it for well injection, thus increasing the oil recovery from well through rising pressure Moreover, it is considered an effective solution for environmental pollution in the production area. In this way, the Lmit will lead to an increase in the productivity of the well, as well as solve the pollution problem resulting from reinjection of the produced water. Survey had been done to identify the specification of required water for well injection to be the base of design for the proposed unit, which can be summarized in the control of the fol1owing:- I Oil content in water. I Suspended solids content in water. I Bacterial account in water. I Hydrogen number PH. I Dissolved oxygen in water. Three samples had been taken and analyzed to determine the above mentioned parameters to be compared with the allowed limits. The proposed unit consists of the following: I Produced water sedimentation tank: to reduce the suspended solids and turbidity by gravity settling. I Multi Media Filter; to remove the most of the suspended solids presents in the raw Produce feed Water and acts as a secondary oil removal process unit. viiItem Metal Pollution Caused by Khartoum Refinery Waste Wate(Neelain University, 2003) Azza Gassim Mustafa El-Imam; Azza Gassim Mustafa El-ImamIn this study a total of twenty-four samples of treated wastewater were collected from Khartoum Refinery (KR) and analyzed using (AAS) Atomic Absorption Spectrophotometer technique. The range of the elements concentration in pg/g is as follows, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Na, Ni, Pb, Zn; (19.80-156.00), ND, ND, ND, (0.0-0.03), (0.02-0.15), (5.80-32.40), (0.02-0.0'4), (47.00-905.00), ND, (0.01-0.21), (0.03-0.17) respectively. The low fnetal concentrations of the treated wastewater and the concentrated sludge show that the refinery wastewater treatment system is efficient. The treated water should be utilized to prevent accumulation of the metals, otherwise saturation of the bonds due to the surface evaporation. This will lead to underground water and soil pollution. The low toxic elements concentrations of the treated wastewater {within the range of the concentrations recommended by the irrigation} show that, this water can be used for plantation, but growing plants for uses other than for food because pathogens may be present. Sodium and aluminum show high concentrations because caustic soda and some aluminum compounds are used in the refinery as additives. Therefore, mixing of Nile River water, according to chemical laboratory results, may treat the excess concentrations of sodium and other elements, when compared with the standard range of irrigation.Item ‘USE OF GTIAR. (EPIIJMI AS TIIICKENIKG AGENT IE’ LATEX PAIKTS(Neelain University, 2007-06) Selma Hassan IbrahimABSTRACT This research was intended to contribute to the improvement of the latex paint industry in Sudan as well as to the consolidation of the links bet\veen the industrial sector and academia by using Guar as available natural national product with the vision of developing its utilisation. Guar was investigated as an alternative thickener instead of usually used 1-Iydroxy Ethyl Cellulose (Natrosol®). Experiments were conducted in a period of 21 month using six samples. In the first four samples the thickener solutions were composed of mixtures of Guar and Natrosol® with respective ratios of 1:4, 2:3, 3:2, 1:1. The thickener solution of the 5"‘ and 6"‘ samples were prepared from 100% guar and doubling the dose of the preservative agent in the later. Severe hydrolysis was observed in the first three samples, whereas the optimum duration of preservation was obtained with sample six (100% guar) or when the preservative to guar ratio was 1:1. With regard to this sample tests on the effects of viscosity on ‘properties and functions of paint have shown good results vis-a-vis flow out of can, application to substrate, splatter drip, film forming, tinting capacity and brush-ability. Economical evaluation of the use of Guar was carried out and the results have shown good feasibility. It was concluded that marketing of Guar thickened paints is very promising due to the improved characteristics of product. By using the results of this research and extending its scope, investors may be attracted to the adoption of using Guar as natural available resource that minimises the costs of latex paint industry. IV