Recovery, Regeneration, and Reutilization Insights Related to New-Generation Solvents

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

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 3074

Special Issue Editors


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Guest Editor
Department of Chemical Engineering, Autonoma University of Madrid, 28049 Madrid, Spain
Interests: The development of separation and valorization processes using ionic liquids and incoming new generation solvents or residues, mainly in the oil/energy industry, covering basic research, simulation, scale-up and design
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Guest Editor
Department of Chemical Engineering, Autonoma University of Madrid, 28049 Madrid, Spain
Interests: The development of knowledge and practical applications of ionic liquids (ILs), such as: i) CO2 capture by IL based systems; ii) Treatment of gaseous contaminants by absorption with ILs; iii) Development of advanced nano and micromaterials based on ILs; iv) Recovery and/or removal of ILs contaminating water streams; and v) Integration of molecular and process simulation computational tools for the conceptual design of industrial applications based on ILs
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Chemical Engineering, Autonoma University of Madrid, 28049 Madrid, Spain
Interests: The research interests cover i) the CO2 chemical and physical capture with ILs; ii) the development of advanced materials to solve the kinetic restrictions of ILs in absorption operations (ENIL and SILP materials); the conversion of contaminants (CO2 and NO) into value added compounds; iii) the integration of molecular and process simulation computational tools for the conceptual design of new processes based on ILs

Special Issue Information

Dear Colleagues,

Aimed at testing the outstanding properties associated with new-generation solvents (ionic liquids, deep eutectic solvents, biosolvents, and natural solvents, among other categories identified in the literature), the main field of research is the development of new processes. Overall, new-generation solvents have an active role in the development of catalytic systems in several kinds of homogeneous reactions and in separation processes, covering gases, liquids, and solids. These compounds have shown noticeable features that clearly impact on several parameters of the processes, such as simplified flow diagrams, enhanced energy consumption, better life cycle assessment indicators, and so on. Nevertheless, recovery, regeneration, and reutilization stages are clearly key issues that the research community must evaluate to validate any proposal. To date, the evidence available is insufficient and clearly limits the development of new processes of interest for the industry.

This Special Issue on “Recovery, Regeneration, and Reutilization Insights Related to New-Generation Solvents” aims to collect high-quality research articles addressing recovery, regeneration, and reutilization studies or similar works, including comprehensive review studies in well-explored topics with special general interest. Processes at which recovery, regeneration, and reutilization of new-generation solvents take place can be but are not limited to the following:

- Recovery and reuse of new-generation solvents in homogeneous reactions;

- Extraction and extractive distillation processes using new-generation solvents;

- Absorption and valorization of greenhouse gases using new-generation solvents;

- Biomass pretreatment and fractionation with new-generation solvents;

- Different lab scale uses for specific new-generation solvents.

Dr. Pablo Navarro
Dr. Jesús Lemus
Dr. Rubén Santiago
Guest Editors

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Keywords

  • Liquid–liquid extraction 
  • Distillation 
  • Absorption 
  • Biomass treatment and fractionation 
  • Process simulation 
  • Economic analysis

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Published Papers (1 paper)

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Research

14 pages, 1367 KiB  
Article
Oxidative Extractive Desulfurization System for Fuel Oil Using Acidic Eutectic-Based Ionic Liquid
by Sarrthesvaarni Rajasuriyan, Hayyiratul Fatimah Mohd Zaid, Mohd Faridzuan Majid, Raihan Mahirah Ramli, Khairulazhar Jumbri, Jun Wei Lim, Mardawani Mohamad, Pau Loke Show and Brian Yuliarto
Processes 2021, 9(6), 1050; https://doi.org/10.3390/pr9061050 - 16 Jun 2021
Cited by 5 | Viewed by 2532
Abstract
The biggest challenge faced in oil refineries is the removal of sulfur compounds in fuel oil. The sulfur compounds which are found in fuel oil such as gasoline and diesel, react with oxygen in the atmosphere to produce sulfur oxide (SOx) gases when [...] Read more.
The biggest challenge faced in oil refineries is the removal of sulfur compounds in fuel oil. The sulfur compounds which are found in fuel oil such as gasoline and diesel, react with oxygen in the atmosphere to produce sulfur oxide (SOx) gases when combusted. These sulfur compounds produced from the reaction with oxygen in the atmosphere may result in various health problems and environmental effects. Hydrodesulfurization (HDS) is the conventional process used to remove sulfur compounds from fuel oil. However, the high operating conditions required for this process and its inefficiency in removing the organosulfur compounds turn to be the major drawbacks of this system. Researchers have also studied several alternatives to remove sulfur from fuel oil. The use of ionic liquids (ILs) has also drawn the interest of researchers to incorporate them in the desulfurization process. The environmental effects resulting from the use of these ILs can be eliminated using eutectic-based ionic liquids (EILs), which are known as greener solvents. In this research, a combination of extractive desulfurization (EDS) and oxidative desulfurization (ODS) using a photocatalyst and EIL was studied. The photocatalyst used is a pre-reported catalyst, Cu-Fe/TiO2 and the EIL were synthesized by mixing choline chloride (ChCl) with organic acids. The acids used for the EILs were propionic acid (PA) and p-toluenesulfonic acid (TSA). The EILs synthesized were characterized using thermogravimetry analyser (TGA) differential scanning calorimetry (DSC) analysis to determine the physical properties of the EILs. Based on the TGA analysis, ChCl (1): PA (3) obtained the highest thermal stability whereas, as for the DSC analysis, all synthesized EILs have a lower melting point than its pure component. Further evaluation on the best EIL for the desulfurization process was carried out in a photo-reactor under UV light in the presence of Cu-Fe/TiO2 photocatalyst and hydrogen peroxide (H2O2). Once the oxidation and extraction process were completed, the oil phase of the mixture was analyzed using high performance liquid chromatography (HPLC) to measure the sulfur removal efficiency. In terms of the desulfurization efficiency, the EIL of ChCl (1): TSA (2) showed a removal efficiency of about 99.07%. Full article
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