09 Nov 2017

Recycled motor oil applicantion

 Recycled motor oil can be combusted as fuel, usually in plant boilers, space heaters, or industrial heating applications such as blast furnaces and cement kilns.Recycled motor oil can be distilled into diesel fuel or marine fuel in a process similar to oil re-refining, but without the final hydrotreating process.The lubrication properties of motor oil persist, even in used oil, and it can be rec......

12 Jul 2017

Where is the petroleum?

 Because the earth is filled entirely by layers of solid (or at significant depths) molten rock, the petroleum it contains cannot exist within a self-contained “lake”, but must decide to live within the small fraction of space (or pores) that exist in these rocks. Like the sponge in your kitchen sink (albeit, less spongy and a bit heavier) certain kinds of rock (mainly sandstone and limestone) ......

07 Jul 2017

The formation of petroleum

 Diagenesis is a process of compaction under mild conditions of temperature and pressure. When organic aquatic sediments (proteins, lipids, carbohydrates) are deposited, they are very saturated with water and rich in minerals. Through chemical reaction, compaction, and microbial action during burial, water is forced out and proteins and carbohydrates break down to form new structures that compris......

16 Nov 2016

Hydrogen Peroxide Effect

 The study of the effects of hydrogen peroxide content on heavy metal removal is shown in Figure 4-9. Though 1.5% of hydrogen peroxide can give slightly better removal efficiencies on heavy metals from used oil than 1.0% of hydrogen peroxide used in the preliminary test runs. However, if we consider from the economic point of view when this application expands to large scale, it would be more cos......

26 Aug 2016

Optimal Conditions for Destructive Adsorption of Heavy Metals from Used Oil

 According to the results from the preliminary test runs, the operating conditions that gave better performance in destructive adsorption reaction of heavy metal removal from used oil are: (1) with hydrogen peroxide present in the emulsified sample (2) oxidative environment is better (3) silica gel is the best adsorbent candidate Thus, with this information in mind, we can optimize the reaction c......

27 Jul 2016

Results from Preliminary Tests on Reduction of Heavy Metals from Used Oil II

 The comparison of the effects of ultrasound under oxidative and reduced environment is depicted in Figure 4-5. It indicates that hydrogen peroxide seemed to better in removing heavy metals than sodium borohydride (i.e., under reducing environment). For the set of experiments conducted using alkaline water (with addition of Na2SiO3) instead of distilled water to emulsify the used oil samples, the......

05 Jul 2016

Results from Preliminary Tests on Reduction of Heavy Metals from Used Oil

The experimental data from preliminary tests showing ultrasonic irradiation effect on heavy metals are presented in Figures 4-3 to 4-7. The experiments were conducted by varying the operating conditions as mentioned in the last section. Metal determination by ICP-MS has a very low detection limit of ppb level, however, a big variation could be observed even in the same sample matrix when the sampl......

16 Jun 2016

Difficulties Encountered in Analytical Work of Used Oil

 There were several problems encountered during the analytical procedures. First, it was discovered that the inhomogeneity of the used oil samples could cause inconsistent results unless the samples were prepared with special care at each step. The bulk sample had to be continuously stirred and the representative portion had to be carefully transferred to make emulsions or used as it is for the t......

01 Jun 2016

Water-in-Oil Emulsions

 When the original used oil sample was observed under light microscope, a welldispersed water-in-oil emulsifying state was clearly seen. Oil immersion technique and    both regular/polarized light modes were used to focus beyond the cover slide and prevent the interference from trapped air bubbles. Since used oil must have certain levels of surfactants carried from its additive package, it......

06 May 2016

Contaminants in the used oil II

 For sulfur determination, total sulfur measured in the unused lube oil or used lube oil is about 0.3wt% or even to 0.4wt%. Sulfur is added to base lube oil (contains total sulfur at only 0.05wt% for 100 neutral base oil and 0.07wt% for 300 neutral base oil) from the additive packages and should be removed during the recycling operations. In most cases, sulfur compounds produce acidic gases to ca......

14 Apr 2016

Contaminants in the used oil

 many contaminants such as PAHs, PCBs, and chlorinated compounds were not found in any of the four used oil samples as predicted. BTEX compounds and heavy metals did present in these four used oil samples, however, the levels of concentrations were mostly much lower than typical values (Refer to Table 2-2). The reason for why such deviated and not-so-representative samples were acquired probably ......

01 Apr 2016

used oil samples

 Besides these used oil samples, two different brands of clean lube oil, Pennzoil 10W-30 (labeled P-10W-30) and Valvoline 10W-30 (labeled V-10W-30) are purchased from Target store for the purpose of blank study. The reason for choosing 10W-30 grade for comparison is because it is the most popular used one, especially with Southern California’s weather condition. The characteristics of the four ......

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