Chromatographic Studies on Oil Sand Bitumens

The adsorption of polymers affects the cost and oil recovery in oil reservoir exploitation and the flocculation effect in the treatment of oil sand tailings. The adhesion and adsorption of a hydrophobically modified polyacrylamide (HMPAM), i.e., P(AM-NaAA-C16DMAAC), on silica and asphaltene were investigated using surface force measurements, thermodynamic analysis and quartz crystal microbalance with dissipation (QCM-D) measurement. Our study indicates that HMPAM polymer has strong interaction with both silica and asphaltene. The adhesion force of HMPAM on silica was stronger than that on asphaltene surface. Consistently, the adsorption of HMPAM was also greater on silica surface, with a more rigid layer formed on the surface. For HMPAM/silica system, the attractive interaction and the strong adhesion are mainly driven by the hydrogen bonding and electrostatic interaction. For HMPAM/asphaltene system, it is mainly due to hydrophobic interaction between the long hydrocarbon chains of HMPAM and asphaltene. Furthermore, continuous adsorption of HMPAM was detected and multiple layers formed on both silica and asphaltene surfaces, which can be attributed to the hydrophobic chains of HMPAM polymers. This work has illustrated the interaction mechanism of HMPAM polymer on hydrophilic silica and hydrophobic asphaltene surfaces, which provide insight into the industrial applications of hydrophobically modified polymer.

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Rose Flowers—A Delicate Perfume or a Natural Healer?

Biomolecules ◽

10.3390/biom11010127 ◽

2021 ◽

Vol 11 (1) ◽

pp. 127

Author(s):

Milka Mileva ◽

Yana Ilieva ◽

Gabriele Jovtchev ◽

Svetla Gateva ◽

Maya Margaritova Zaharieva ◽

...

Keyword(s):

Essential Oils ◽

Food Industry ◽

Raw Materials ◽

Biological Activities ◽

Biological Properties ◽

Rosa Damascena ◽

Oil Sand ◽

Rosa Gallica ◽

Therapeutic Properties ◽

Phytochemical Profile

Plants from the Rosacea family are rich in natural molecules with beneficial biological properties, and they are widely appreciated and used in the food industry, perfumery, and cosmetics. In this review, we are considering Rosa damascena Mill., Rosa alba L., Rosa centifolia L., and Rosa gallica L. as raw materials important for producing commercial products, analyzing and comparing the main biological activities of their essential oils, hydrolates, and extracts. A literature search was performed to find materials describing (i) botanical characteristics; (ii) the phytochemical profile; and (iii) biological properties of the essential oil sand extracts of these so called “old roses” that are cultivated in Bulgaria, Turkey, India, and the Middle East. The information used is from databases PubMed, Science Direct, and Google Scholar. Roses have beneficial healing properties due to their richness of beneficial components, the secondary metabolites as flavonoids (e.g., flavones, flavonols, anthocyanins), fragrant components (essential oils, e.g., monoterpenes, sesquiterpenes), and hydrolysable and condensed tannins. Rose essential oils and extracts with their therapeutic properties—as respiratory antiseptics, anti-inflammatories, mucolytics, expectorants, decongestants, and antioxidants—are able to act as symptomatic prophylactics and drugs, and in this way alleviate dramatic sufferings during severe diseases.

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Reaction behavior of oil sand in fluidized-bed pyrolysis

Petroleum Science ◽

10.1007/s12182-013-0307-0 ◽

2013 ◽

Vol 10 (4) ◽

pp. 562-570 ◽

Cited By ~ 8

Author(s):

Jinsen Gao ◽

Tao Xu ◽

Gang Wang ◽

Angui Zhang ◽

Chunming Xu

Keyword(s):

Fluidized Bed ◽

Oil Sand ◽

Reaction Behavior

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Review of characterization methods for water-soluble polymers used in oil sand and heavy oil industrial applications

Environmental Reviews ◽

10.1139/er-2015-0094 ◽

2016 ◽

Vol 24 (4) ◽

pp. 460-470 ◽

Cited By ~ 2

Author(s):

Xiaomeng Wang

Keyword(s):

Oil Recovery ◽

Heavy Oil ◽

Environmental Fate ◽

Industrial Applications ◽

Water Soluble ◽

Oil Sand ◽

Characterization Methods ◽

Water Soluble Polymers ◽

Soluble Polymers ◽

Terrestrial Animal

Water-soluble polymers have been used in many applications in the oil sand and heavy oil industries, including drilling, enhanced oil recovery, tailings treatment, and water treatment. Because they are water soluble, residual polymer can remain with the aqueous phase, potentially leading to environmental impacts. Investigating the environmental fate of these water-soluble polymers is particularly important as they may be toxic to aquatic biota or terrestrial animal life. However, since polymers are somewhat complex because of their high molecular weight, there are many challenges in their measurement, especially in complex matrices. In this paper, polymers used in oilfield applications, particularly in the oil sand or heavy oil industries, are reviewed and various analytical methods for polymer characterization are compared.

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