Topic Editors

College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China

Application of Aqueous Two-Phase System

Abstract submission deadline
closed (29 December 2023)
Manuscript submission deadline
closed (29 February 2024)
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2147

Topic Information

Dear Colleagues,

Aqueous two-phase technology is a new separation and enrichment technology that has been developed in recent years. This technology has the advantages of simple operation, high separation efficiency, a high enrichment factor, mild mass transfer, low organic solvent consumption and low cost. It is widely used in the separation of active biomolecules, sample preparation for instrumental analysis, and the separation of organic contaminants. The main goals of this Topic are to publish the recent developments of new technologies and methods based on aqueous two-phase systems for the separation of bioactive substances.

Dr. Bin Jiang
Prof. Dr. Zhibiao Feng
Topic Editors

Keywords

  • separation and purification
  • aqueous two-phase system
  • bioactive bubstances
  • natural products
  • extraction
  • biomolecules

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Analytica
analytica
- - 2020 15.6 Days CHF 1000
Energies
energies
3.2 5.5 2008 16.1 Days CHF 2600
Materials
materials
3.4 5.2 2008 13.9 Days CHF 2600
Molecules
molecules
4.6 6.7 1996 14.6 Days CHF 2700
Separations
separations
2.6 2.5 2014 13.6 Days CHF 2600

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Published Papers (1 paper)

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32 pages, 18593 KiB  
Article
Insights into the Microscopic Oil–Water Flow Characteristics and Displacement Mechanisms during Waterflooding in Sandstone Reservoir Rock Based on Micro-CT Technology: A Pore-Scale Numerical Simulation Study
Materials 2023, 16(9), 3555; https://doi.org/10.3390/ma16093555 - 06 May 2023
Cited by 1 | Viewed by 1561
Abstract
The low oil recovery rate observed in current oil fields is largely attributed to the presence of remaining oil trapped in the pores of porous media during waterflooding. To improve the recovery rate, it is imperative to gain an understanding of the oil–water [...] Read more.
The low oil recovery rate observed in current oil fields is largely attributed to the presence of remaining oil trapped in the pores of porous media during waterflooding. To improve the recovery rate, it is imperative to gain an understanding of the oil–water flow characteristics and displacement mechanisms during waterflooding, as well as to elucidate the underlying mobilization mechanisms of residual oil at the pore scale. In this paper, we explore these issues in depth by numerically investigating the influence of factors such as water injection velocities, oil–water viscosity ratios, and wettability conditions on pore-scale oil–water flow characteristics and oil recovery rate. To this end, we employ a direct numerical simulation (DNS) method in conjunction with the volume of fluid (VOF) method to study the microscopic displacement mechanisms of waterflooding in a reconstructed two-dimensional digital rock core based on micro-CT technology. In addition, the particle tracing method is adopted to identify the flow path and dominant areas during waterflooding in order to mobilize the residual oil within the pores. The findings indicate that the oil–water flow characteristics in porous media are determined by the interplay between capillary and viscous forces. Furthermore, the oil recovery rate is 10.6% and 24.7% lower under strong water-wet and oil-wet conditions than that (32.36%) under intermediate wettability conditions, and the final oil recovery rate is higher under water-wet conditions than under oil-wet conditions. The seepage path and the dominant areas are directly linked to the capillarity formed during waterflooding. The findings of this study are significant in terms of enhancing the recovery rate of residual oil and provide a novel perspective for understanding the waterflooding process. Full article
(This article belongs to the Topic Application of Aqueous Two-Phase System)
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