Advanced Separation and Extraction Processes for Effective Resource Utilization

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Chemical Processes and Systems".

Deadline for manuscript submissions: 28 February 2026 | Viewed by 335

Special Issue Editor


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Guest Editor
Mining and Explosives Engineering Department, Missouri University of Science and Technology, Rolla, MO 65409, USA
Interests: mineral processing; solvent extraction; hydrometallurgy; flotation; waste recycling; leaching technologies

Special Issue Information

Dear Colleagues,

Separation and extraction technologies are pivotal for sustainable resource management, enabling the recovery of critical materials from complex streams while minimizing environmental footprints. This Special Issue addresses emerging challenges in resource efficiency across industries (e.g., mining, recycling, energy, and chemicals) by spotlighting innovative processes that enhance selectivity, scalability, and circularity. Topics of interest include, but are not limited to, the following: advanced techniques (physical separation, solvent extraction, hybrid processes), materials and design (functionalized reagents, green solvent, smart adsorbents), applications (critical metal recovery, wastewater valorization, viomass processing, plastic/pollutant remediation), sustainability (life-cycle assessment, energy optimization, zero-waste process integration), and modeling and AI (process simulation, machine learning for system optimization, and digital twins).

Prof. Dr. Ahmed Sobhy
Guest Editor

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Keywords

  • separation processes
  • resource recovery
  • extraction technologies
  • sustainable engineering
  • process intensification
  • hydrometallurgy
  • waste valorization
  • circular economy
  • critical minerals

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Published Papers (1 paper)

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Review

23 pages, 6843 KB  
Review
Injectivity, Potential Wettability Alteration, and Mineral Dissolution in Low-Salinity Waterflood Applications: The Role of Salinity, Surfactants, Polymers, Nanomaterials, and Mineral Dissolution
by Hemanta K. Sarma, Adedapo N. Awolayo, Saheed O. Olayiwola, Shasanowar H. Fakir and Ahmed F. Belhaj
Processes 2025, 13(8), 2636; https://doi.org/10.3390/pr13082636 - 20 Aug 2025
Viewed by 247
Abstract
Waterflooding, a key method for secondary hydrocarbon recovery, has been employed since the early 20th century. Over time, the role of water chemistry and ions in recovery has been studied extensively. Low-salinity water (LSW) injection, a common technique since the 1930s, improves oil [...] Read more.
Waterflooding, a key method for secondary hydrocarbon recovery, has been employed since the early 20th century. Over time, the role of water chemistry and ions in recovery has been studied extensively. Low-salinity water (LSW) injection, a common technique since the 1930s, improves oil recovery by altering the wettability of reservoir rocks and reducing residual oil saturation. Recent developments emphasize the integration of LSW with various recovery methods such as CO2 injections, surfactants, alkali, polymers, and nanoparticles (NPs). This article offers a comprehensive perspective on how LSW injection is combined with these enhanced oil recovery (EOR) techniques, with a focus on improving oil displacement and recovery efficiency. Surfactants enhance the effectiveness of LSW by lowering interfacial tension (IFT) and improving wettability, while ASP flooding helps reduce surfactant loss and promotes in situ soap formation. Polymer injections boost oil recovery by increasing fluid viscosity and improving sweep efficiency. Nevertheless, challenges such as fine migration and unstable flow persist, requiring additional optimization. The combination of LSW with nanoparticles has shown potential in modifying wettability, adjusting viscosity, and stabilizing emulsions through careful concentration management to prevent or reduce formation damage. Finally, building on discussions around the underlying mechanisms involved in improved oil recovery and the challenges associated with each approach, this article highlights their prospects for future research and field implementation. By combining LSW with advanced EOR techniques, the oil industry can improve recovery efficiency while addressing both environmental and operational challenges. Full article
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