https://repository.sustech.edu/handle/123456789/16800 Thu, 23 Apr 2026 17:38:03 GMT 2026-04-23T17:38:03Z https://repository.sustech.edu/handle/123456789/16809 Title: Preparation and Evaluation of Ethoxylated Jatropha Oil Fatty Acids as Deemulsifier for Crude Oil Emulsion Authors: Taha,Haitham A.; Ahmed M. Al-Sabagh2; Elmugdad A. Ali1 Abstract: Oil is produced from reservoirs in association with natural formation water or mixed formation during water injection. Removal of water is an essential step in petroleum refining for many technical reasons. Nonconventional homologous surfactants derived from natural oil such as Jatropha oil were synthesized to replace the commercial surfactants. The synthesis comprises two steps: first hydrolysis of the Jatropha oil followed by ethoxylation. The prepared ethoxylated Jatropha oil fatty acids exhibit high tendency toward de-emulsification of water in oil emulsion Description: article Fri, 01 Jan 2016 00:00:00 GMT https://repository.sustech.edu/handle/123456789/16809 2016-01-01T00:00:00Z https://repository.sustech.edu/handle/123456789/16803 Title: Synthesis of New 1,3,4-Thiadiazole Derivatives Based Hetrocyclics Authors: Salman,Amani Abdel Razig; Abdel Aziz, Ahmad M Farag Abstract: A Facile route to some new 2-(3,5-diphenyl-1,3,4-thiadiazole-2-(3H)-ylidene) derivatives via the reaction of 3-mercapto-1-(1-methylbenzimidazole-2-yl)-3(phenylamino)-2(phenylsulfonyl)- propenone (3) with N-phenylbenzohydrazonyl chloride (4) is reported. Avariety of hydrazonoyl halides reacted with compound 3 affording 1,3,4-thiadiazole derivatives that incorporate a benzimidazole moiety Description: article Fri, 01 Jan 2016 00:00:00 GMT https://repository.sustech.edu/handle/123456789/16803 2016-01-01T00:00:00Z https://repository.sustech.edu/handle/123456789/16807 Title: Preparation and Evaluation of Ethoxylated Jatropha Oil Fatty Acids as Deemulsifier for Crude Oil Emulsion Authors: Haitham A Taha; Elmugdad Ahmed Ali Khalid Abstract: Oil is produced from reservoirs in association with natural formation water or mixed formation during water injection. Removal of water is an essential step in petroleum refining for many technical reasons. Nonconventional homologous surfactants derived from natural oil such as Jatropha oil were synthesized to replace the commercial surfactants. The synthesis comprises two steps: first hydrolysis of the Jatropha oil followed by ethoxylation. The prepared ethoxylated Jatropha oil fatty acids exhibit high tendency toward de-emulsification of water in oil emulsion Description: article Fri, 01 Jan 2016 00:00:00 GMT https://repository.sustech.edu/handle/123456789/16807 2016-01-01T00:00:00Z https://repository.sustech.edu/handle/123456789/16802 Title: Elemental Analysis of Some Geophagic Soils of Hagar Sari Area Using Inductively Coupled Plasma Technique Authors: Adam,Mohammed,Esraa Omer; Kanno,Ibrahim Osman; Osman,Mohammed Elmubark Abstract: Fifteen samples of soil lick were collected from HagarSari surroundings at Northern Darfur and analyzed for elemental composition. Inductively coupled plasma technique was used. The results show that the mean percentage mineral contents were as follow: Aluminum (1.968%), Iron (1.707%), Potassium (0.40%), Sodium (0.1679%), Calcium (0.1680%), Magnesium (8.6×10-2%), Manganese (0.24×10-2%),Bbarium (0.0117%), Vanadium (0.573×10-2%), Chromium (0.51×10-2%), Strontium (0.47×10-2%), Zinc (0.253×10-2%), Copper (0.132×10-2%),Lead (0.235×10-2%), andMolybdenum and Nickel showed significantly low concentrations (0.044×10-2%, 0.0435×10-2% respectively). Silver and Cobalt were not detected. Surprisingly, Aluminum and Iron were mostabundant instead of Sodium, Potassium, Calcium and Magnesium which are normally considered to be the essential animal attractants, because they normally showed higher concentration in the licked soil samples almost in all studies concerned with this field for so many years in different countries Description: article Fri, 01 Jan 2016 00:00:00 GMT https://repository.sustech.edu/handle/123456789/16802 2016-01-01T00:00:00Z