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ChemEngineering
Special Issues
State-of-the-Art Membrane Technologies in Chemical Engineering
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State-of-the-Art Membrane Technologies in Chemical Engineering

A special issue of ChemEngineering (ISSN 2305-7084).

Deadline for manuscript submissions: closed (20 October 2024) | Viewed by 6113

Special Issue Editors

Prof. Dr. Fausto Gallucci

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Guest Editor
Inorganic Membranes and Membrane Reactors, Sustainable Process Engineering, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands
Interests: Process design and intensification; membranes and membrane reactors; separation
Special Issues, Collections and Topics in MDPI journals
Dr. Rouzbeh Ramezani

E-Mail Website
Guest Editor
Inorganic Membranes and Membrane Reactors, Sustainable Process Engineering, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands
Interests: membranes; CO2 capture; CLC/CLR

Special Issue Information

Dear Colleagues,

Membranes and membrane operations are becoming a mainstay in the chemical industry. Novel membrane materials allow separations at a reduced OPEX and CAPEX compared to more conventional separations. While membrane separation is market-leading technology in water desalination, it has several advantages in other fields such as gas separation, gas/liquid contacting, solvent recovery, liquid separations, and integrated reactors.

In this Special Issue, we aim to collect the latest developments in membrane materials and operations applied to chemical engineering. Research regarding both material synthesis, membrane testing, and module and process design are welcome in the Special Issue. Topics include but not are limited to CCU, gas separation, membrane reactors, liquid separations, solvent recovery, etc.

Prof. Dr. Fausto Gallucci
Dr. Rouzbeh Ramezani
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. ChemEngineering is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • membrane separation
  • CO2 capture
  • CCU/CCUS
  • membrane materials
  • process design
  • techno-economics

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Published Papers (3 papers)

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Research

14 pages, 2260 KiB  
Article
Enhancing Understanding of Siloxane Surface Properties and Functional Group Effects on Water Deoxygenation
by Fryad Mohammed Sharif, Sohail Murad and Saif Talal Manji
ChemEngineering 2024, 8(5), 85; https://doi.org/10.3390/chemengineering8050085 - 28 Aug 2024
Viewed by 860
Abstract
The deoxygenation process in water used in well injection operations is an important matter to eliminate corrosion in the petroleum industry. This study used molecular dynamics simulations to understand the behavior of siloxane surfaces by studying the surface properties with two functional groups [...] Read more.
The deoxygenation process in water used in well injection operations is an important matter to eliminate corrosion in the petroleum industry. This study used molecular dynamics simulations to understand the behavior of siloxane surfaces by studying the surface properties with two functional groups attached to the end of siloxane and their effect on the deoxygenation process. The simulations were performed using LAMMPS to characterize surface properties. Jmol software version 14 was used to generate siloxane chains with (8, 20, and 35) repeat units. We evaluated properties such as total energy, surface tension, and viscosity. Then, we used siloxane as a membrane to compare the efficiency of deoxygenation for both types of functional groups. The results indicated that longer chain lengths increased the total energy and viscosity while decreasing surface tension. Replacing methyl groups with trifluoromethyl (CF3) groups increased all the above mentioned properties in varying proportions. Trifluoromethyl (CF3) groups showed better removal efficiency than methyl (CH3) groups but allowed more water to pass. Furthermore, the simulations were run using the class II potential developed by Sun, Rigby, and others within an explicit-atom (EA) model. This force field is universally applicable to the atomistic simulation of polymers, inorganic small molecules, and common organic molecules. Full article
(This article belongs to the Special Issue State-of-the-Art Membrane Technologies in Chemical Engineering)
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23 pages, 5457 KiB  
Article
Comparative Analysis of Donnan Steric Partitioning Pore Model and Dielectric Exclusion Applied to the Fractionation of Aqueous Saline Solutions through Nanofiltration
by Aldo Saavedra, Hugo Valdés, Juan Velásquez and Sebastián Hernández
ChemEngineering 2024, 8(2), 39; https://doi.org/10.3390/chemengineering8020039 - 3 Apr 2024
Cited by 1 | Viewed by 2212
Abstract
The aim of this study was to analyze, both theoretically and experimentally, the material transport mechanisms governing the separation of ionic species in aqueous solutions using nanofiltration membranes. To interpret the experimental results, the Donnan Steric Partitioning Model (DSPM) and the Dielectric Exclusion [...] Read more.
The aim of this study was to analyze, both theoretically and experimentally, the material transport mechanisms governing the separation of ionic species in aqueous solutions using nanofiltration membranes. To interpret the experimental results, the Donnan Steric Partitioning Model (DSPM) and the Dielectric Exclusion Model (DSPM-DE) were applied and computationally simulated in Matlab. Experimental tests were conducted using a pilot-scale system with commercial NF90 membranes. The results indicate that the DSPM better describes the rejection of monovalent ions (sodium and chloride), while the DSPM-DE is more suitable for divalent ions (sulfate and magnesium). Additionally, both models were sensitized to explore the impact of hindrance factors on the rejection of different ionic species. For neutral molecules present in the solution, it was observed that the DSPM and DSPM-DE do not adequately interpret selectivity, suggesting that under such conditions, the electrostatic exclusion mechanism loses significance, with the steric mechanism prevailing. Full article
(This article belongs to the Special Issue State-of-the-Art Membrane Technologies in Chemical Engineering)
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12 pages, 1859 KiB  
Communication
Ultrafiltration to Increase the Consistency of Fruit Pulps: The Role of Permeate Flux
by Fulvia Chiampo
ChemEngineering 2024, 8(1), 3; https://doi.org/10.3390/chemengineering8010003 - 20 Dec 2023
Viewed by 1783
Abstract
Ultrafiltration is a well-known operation, widely used in food processing, especially to concentrate selectively liquid compounds. However, so far, it has been mainly used to change concentration and/or clarify liquids with low viscosity. Ultrafiltration has seldomly been applied to viscous fluids. In this [...] Read more.
Ultrafiltration is a well-known operation, widely used in food processing, especially to concentrate selectively liquid compounds. However, so far, it has been mainly used to change concentration and/or clarify liquids with low viscosity. Ultrafiltration has seldomly been applied to viscous fluids. In this study, it was used to increase the consistency of fruit pulps, without changing their taste and organoleptic properties. This paper reports the findings achieved in experimental runs carried out on a pilot plant, equipped with four ultrafiltration tubular membranes (total surface area = 0.8 m2). Raw fruit pulps, namely, apple, apricot, and pear, were used to study the influence of the operative parameters on the permeate flux and organoleptic properties of the final products (retentate and permeate). The flow rate was in the range of 3.0–5.1 m3/h, at 50 °C. The influence of temperature on the permeate flux was checked, with one run with apple pulp at 20 °C. As expected, the findings show that high flow rate and temperature improve the permeate flux. Membranes show different performance in permeate flux for the tested pulps. This is probably due to their different chemical and physical composition, which could be responsible for different fouling of the membrane and, as a consequence, a different resistance to the permeate flow. The final products have the same taste as the raw ones, and each of them can be used as it is or as an ingredient. These results have a technological relevance, and, besides, the study shows a methodology for future applications of ultrafiltration. Full article
(This article belongs to the Special Issue State-of-the-Art Membrane Technologies in Chemical Engineering)
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