| Studying bitumen-bubble interactions using atomic force microscopy | |
| Department | OSSO国家重点实验室 |
Ren SL(任嗣利)2 ; Masliyah, Jacob1; Xu, Zhenghe1
| |
| 2014 | |
| Source Publication | Colloids and Surfaces A: Physicochemical and Engineering Aspects
 |
| ISSN | 0927-7757 |
| Volume | 444Pages:165-172 |
| Abstract | Processing of oil sands using water-based extraction processes requires selective aeration of liberated bitumen droplets to facilitate transport of aerated bitumen to the top of the slurry where it is recovered. Colloidal forces between bubble and bitumen or silica control the selective attachment of bitumen to air bubbles as desired. In this study, interaction forces between bubble and bitumen or silica were measured in various aqueous solutions using atomic force microscopy (AFM). The wettability of the silica particles was found to play a significant role in controlling bubble–silica interactions. There exists a long-range repulsive force and zero adhesion between air bubbles and hydrophilic silica spheres, in contrast to strong attractive force and large adhesion force between the air bubble and hydrophobic silica spheres. The results suggest the potential of unwanted aeration of hydrophobic solids, leading to a poor froth quality. Study on bitumen–bubble interaction shows that the types of surfactants have a great effect on the long-range interaction due to their adsorption on the bubble surface, which could cause the bubble surface either positively or negatively charged, leading to different electrostatic forces. In the plant process water or in the anionic surfactant solution, the bitumen-coated silica sphere could penetrate into the bubble to form a three-phase contact (TPC) line when the external loading force exceeds a threshold value. |
| Keyword | Oil Sands Bitumen Bubble Wettability Afm |
| Subject Area | 物理化学与绿色催化 |
| DOI | 10.1016/j.colsurfa.2013.12.055 |
| Funding Organization | the NSERC Industrial Research Chair in Oil Sands Engineering; the National Natural Science Foundation of China (Grant No. 51374195);the “100 Talents Program” by the Chinese Academy of Science (CAS) |
| Indexed By | SCI |
| If | 2.752 |
| Language | 英语 |
| Funding Project | 羰基金属功能材料课题组 |
| compositor | 第二作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/19236 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） |
| Corresponding Author | Xu, Zhenghe |
| Affiliation | 1.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Ren SL,Masliyah, Jacob,Xu, Zhenghe. Studying bitumen-bubble interactions using atomic force microscopy[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2014,444:165-172. |
| APA | Ren SL,Masliyah, Jacob,&Xu, Zhenghe.(2014).Studying bitumen-bubble interactions using atomic force microscopy.Colloids and Surfaces A: Physicochemical and Engineering Aspects,444,165-172. |
| MLA | Ren SL,et al."Studying bitumen-bubble interactions using atomic force microscopy".Colloids and Surfaces A: Physicochemical and Engineering Aspects 444(2014):165-172. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 1-s2.0-S092777571300（2090KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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