منابع مشابه
Sorption of crude oil from a non-aqueous phase onto silica: the in ̄uence of aqueous pH and wetting sequence
Sorption of crude oil by mineral surfaces may aect its ̄ow and recovery in porous media. Here, crude oil sorption from a toluene±heptane phase onto quartz and silica gel has been investigated both in the presence and absence of an aqueous phase, as a function of time, oil-to-sorbent ratio, pH, and wetting sequence. Steady-state is attained in roughly 24 h, with sorption following Freundlich is...
متن کاملParticle?Stabilized Materials: Dry Oils and (Polymerized) Non?Aqueous Foams
Oil (liquids with low surface tension and practically immiscible with water) drops can be dispersed in air if relatively oleophobic particles are available. However, such particles with oil-repellent surfaces cannot simply be prepared by controlling the particle surface chemistry alone. Herein the preparation of oil-in-air materials (oil marbles, dry oils) by changing the wetting behavior of pa...
متن کاملPolyurethane Foams for Thermal Insulation Uses Produced from Castor Oil and Crude Glycerol Biopolyols.
Rigid polyurethane foams were synthesized using a renewable polyol from the simple physical mixture of castor oil and crude glycerol. The effect of the catalyst (DBTDL) content and blowing agents in the foams' properties were evaluated. The use of physical blowing agents (cyclopentane and n-pentane) allowed foams with smaller cells to be obtained in comparison with the foams produced with a che...
متن کاملMicroorganisms and Crude Oil
Crude oil is one of the most important energetic resources in the world. It is used as raw material in numerous industries, including the refinery-petrochemical industry, where crude oil is refined through various technological processes into consumer products such as gasoline, oils, paraffin oils, lubricants, asphalt, domestic fuel oil, vaseline, and polymers. Oil-derived products are also com...
متن کاملCrude Oil Price Determinants
Based on monthly observations, I specify an econometric model capturing the driving forces behind the crude oil price series in recent years. A large set of covariates, such as supply and demand variables as well as futures market variables, is used to test the impact on the crude oil price. Current price movements are a result of scarce refining capacity and speculators betting on higher price...
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ژورنال
عنوان ژورنال: Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles
سال: 2013
ISSN: 1294-4475,1953-8189
DOI: 10.2516/ogst/2013186