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Membranes
Special Issues
Membrane and Process Intensification
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Membrane and Process Intensification

A special issue of Membranes (ISSN 2077-0375).

Deadline for manuscript submissions: closed (31 July 2016)

Special Issue Editor

Prof. Dr. Peter Czermak

E-Mail Website
Guest Editor
Institute of Bioprocess Engineering and Pharmaceutical Technology, Mittelhessen University of Applied Sciences, Wiesenstrasse 14, 35390 Giessen, Germany
Interests: bioprocess engineering; bioseparations; membrane processes; membrane reactors; membrane filtration; water treatment; virusfiltration; membrane chromatography
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Membranes are gaining more and more interest in many different fields because of their low-energy consumption, mild operating conditions, the possibility to be integrated with other membranes and conventional processes, and the easy scale-up. Thanks to these peculiarities, membranes have been already successfully used in a lot of applications. In addition to well-established membrane operations, new ones have been developed, allowing the possibility of enlarging the applicative spectrum of membrane units.

In the field of process engineering, in particular "Process Intensification (PI)", membrane processes may be used for improvements in manufacturing and processing by rethinking existing operation schemes into ones that are both more precise and efficient than existing operations. PI frequently involves combining separate unit operations such as reaction and separation into a single piece of equipment resulting in a more efficient, cleaner, and economical manufacturing process. PI may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.

This Special Issue will highlight the importance of membranes in Process Intensification. We look forward to receiving original contributions and reviews related to analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance using membranes and membrane processes respectively.

Prof. Dr. Peter Czermak
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 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. Membranes 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 2200 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

  • hybrid processes
  • production
  • process intensification
  • microfiltration
  • ultrafiltration
  • nanofiltration
  • reverse osmosis
  • membrane distillation
  • membrane reactors
  • membrane contactors
  • operation mode
  • fouling

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

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18 pages, 5917 KiB  
Article
Integration of Methane Steam Reforming and Water Gas Shift Reaction in a Pd/Au/Pd-Based Catalytic Membrane Reactor for Process Intensification
by Bernardo Castro-Dominguez, Ivan P. Mardilovich, Liang-Chih Ma, Rui Ma, Anthony G. Dixon, Nikolaos K. Kazantzis and Yi Hua Ma
Membranes 2016, 6(3), 44; https://doi.org/10.3390/membranes6030044 - 19 Sep 2016
Cited by 30 | Viewed by 10187
Abstract
Palladium-based catalytic membrane reactors (CMRs) effectively remove H2 to induce higher conversions in methane steam reforming (MSR) and water-gas-shift reactions (WGS). Within such a context, this work evaluates the technical performance of a novel CMR, which utilizes two catalysts in series, rather [...] Read more.
Palladium-based catalytic membrane reactors (CMRs) effectively remove H2 to induce higher conversions in methane steam reforming (MSR) and water-gas-shift reactions (WGS). Within such a context, this work evaluates the technical performance of a novel CMR, which utilizes two catalysts in series, rather than one. In the process system under consideration, the first catalyst, confined within the shell side of the reactor, reforms methane with water yielding H2, CO and CO2. After reforming is completed, a second catalyst, positioned in series, reacts with CO and water through the WGS reaction yielding pure H2O, CO2 and H2. A tubular composite asymmetric Pd/Au/Pd membrane is situated throughout the reactor to continuously remove the produced H2 and induce higher methane and CO conversions while yielding ultrapure H2 and compressed CO2 ready for dehydration. Experimental results involving (i) a conventional packed bed reactor packed (PBR) for MSR, (ii) a PBR with five layers of two catalysts in series and (iii) a CMR with two layers of two catalysts in series are comparatively assessed and thoroughly characterized. Furthermore, a comprehensive 2D computational fluid dynamics (CFD) model was developed to explore further the features of the proposed configuration. The reaction was studied at different process intensification-relevant conditions, such as space velocities, temperatures, pressures and initial feed gas composition. Finally, it is demonstrated that the above CMR module, which was operated for 600 h, displays quite high H2 permeance and purity, high CH4 conversion levels and reduced CO yields. Full article
(This article belongs to the Special Issue Membrane and Process Intensification)
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Review

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13 pages, 930 KiB  
Review
Membrane Technology for the Recovery of Lignin: A Review
by Daniel Humpert, Mehrdad Ebrahimi and Peter Czermak
Membranes 2016, 6(3), 42; https://doi.org/10.3390/membranes6030042 - 6 Sep 2016
Cited by 83 | Viewed by 9963
Abstract
Utilization of renewable resources is becoming increasingly important, and only sustainable processes that convert such resources into useful products can achieve environmentally beneficial economic growth. Wastewater from the pulp and paper industry is an unutilized resource offering the potential to recover valuable products [...] Read more.
Utilization of renewable resources is becoming increasingly important, and only sustainable processes that convert such resources into useful products can achieve environmentally beneficial economic growth. Wastewater from the pulp and paper industry is an unutilized resource offering the potential to recover valuable products such as lignin, pigments, and water [1]. The recovery of lignin is particularly important because it has many applications, and membrane technology has been investigated as the basis of innovative recovery solutions. The concentration of lignin can be increased from 62 to 285 g∙L−1 using membranes and the recovered lignin is extremely pure. Membrane technology is also scalable and adaptable to different waste liquors from the pulp and paper industry. Full article
(This article belongs to the Special Issue Membrane and Process Intensification)
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