Special Issue Editor

Prof. Dr. Mingheng Li
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Department of Chemical and Materials Engineering, California State Polytechnic University, Pomona, CA 91768, USA
Interests: membrane processes; water desalination; adsorption; process systems engineering (design, simulation, control, and optimization)
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Dear Colleagues,

Membrane separations are incorporated in applications including water desalination, gas purification, power generation, and a variety of others. A fundamental understanding of the complex transport phenomena (e.g., fluid flow and mass transport mechanisms) and system-level behavior are pivotal to enhance the performance of membrane processes.

The purpose of this Special Issue is to assemble a collection of current research in modeling, simulation, analysis, design, control and optimization of membrane processes.

I look forward to receiving your valued contributions to this Special Issue.

Prof. Dr. Mingheng Li
Guest Editor

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 papers will be 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. Separations is an international peer-reviewed open access monthly 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 1800 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

Microfiltration/ultrafiltration/nanofiltration
Reverse osmosis
Forward osmosis
Pressure-retarded osmosis
Pervaporation
Membrane distillation
Electrodialysis
Membrane gas separation
Membrane reactor
Process modeling, design, control, and optimization

Published Papers (2 papers)

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Research

Open AccessArticle

Applying a Hydrophilic Modified Hollow Fiber Membrane to Reduce Fouling in Artificial Lungs

Nawaf Alshammari

Meshari Alazmi

and

Vajid Nettoor Veettil

Separations 2021, 8(8), 113; https://doi.org/10.3390/separations8080113 - 30 Jul 2021

Viewed by 350

Abstract

Membranes for use in high gas exchange lung applications are riddled with fouling. The goal of this research is to create a membrane that can function in an artificial lung until the actual lung becomes available for the patient. The design of the artificial lung is based on new hollow fiber membranes (HFMs), due to which the current devices have short and limited periods of low fouling. By successfully modifying membranes with attached peptoids, low fouling can be achieved for longer periods of time. Hydrophilic modification of porous polysulfone (PSF) membranes can be achieved gradually by polydopamine (PSU-PDA) and peptoid (PSU-PDA-NMEG5). Polysulfone (PSU-BSA-35Mg), polysulfone polydopamine (PSUPDA-BSA-35Mg) and polysulfone polydopamine peptoid (PSU-PDA-NMEG5-BSA35Mg) were tested by potting into the new design of gas exchange modules. Both surfaces of the modified membranes were found to be highly resistant to protein fouling permanently. The use of different peptoids can facilitate optimization of the low fouling on the membrane surface, thereby allowing membranes to be run for significantly longer time periods than has been currently achieved. Full article

(This article belongs to the Special Issue Modeling, Simulation, and Optimization of Membrane Processes)

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Open AccessFeature PaperArticle

Modeling and Optimization of Membrane Process for Salinity Gradient Energy Production

Lianfa Song

Separations 2021, 8(5), 64; https://doi.org/10.3390/separations8050064 - 12 May 2021

Viewed by 515

Abstract

When hydraulic pressure was added on the feed side of the membrane in the otherwise conventional pressure retarded osmosis (PRO) process, the production rate of the salinity gradient energy could be significantly increased by manipulating the hydraulic pressures on both sides of the membrane. With hydraulic pressure added on the feed side of the membrane, much higher water flux could be obtained than that under the osmotic pressure of the same value. The osmotic pressure of the draw solution, instead of drawing water through the membrane, was mainly reserved to increase the hydraulic pressure of the permeate. In this way, orders of magnitude higher power density than that in the conventional PRO can be obtained with the same salinity gradient. At the optimal conditions, it was demonstrated that the energy production rates that were much higher than the economical breakeven point could be obtained from the pair of seawater and freshwater with the currently available semipermeable membranes. Full article

(This article belongs to the Special Issue Modeling, Simulation, and Optimization of Membrane Processes)

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