Special Issue "Gas Emissions Control and Utilization"

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

Deadline for manuscript submissions: 31 December 2021.

Special Issue Editors

Dr. Zhien Zhang
E-Mail Website
Guest Editor
William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA
Interests: carbon capture utilization and storage (CCUS); gas separation; membrane; polymer; absorption; process modeling; mass transfer; heat transfer; fossil fuel; renewable energy; hydrate; wastewater treatment
Special Issues and Collections in MDPI journals
Dr. Zacharias Frontistis
E-Mail Website
Guest Editor

Special Issue Information

Dear Colleagues, 

Gas emissions have caused severe environmental issues to human beings. Various physical, chemical, and biological technologies have been employed in efforts toward the reduction and utilization of gas pollutants. This Special Issue is partially associated with the 17th International Conference on Environmental Science and Technology (CEST2021). This conference will be held in Athens from 1 to 4 September 2021. The best presentations of the session "Gas Emission Control and Utilization" will be published in this Special Issue, following the normal peer review process. We are pleased to invite you to submit your work in, but not limited to, the following areas:

  • Air pollution;
  • Gas emission reduction (CO2, CO, SO2, H2S, NOx);
  • Gas utilization and production;
  • Gas storage;
  • Gas capture and utilization process modeling;
  • Gas emissions-related energy and environmental issues.
Dr. Zhien Zhang
Dr. Zacharias Frontistis
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 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. Processes 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 2000 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.


  • Air pollution
  • Climate change
  • Gas emission
  • Gas capture
  • Gas utilization
  • Gas storage
  • Process modeling

Published Papers (1 paper)

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CFD Study of the Numbering up of Membrane Microreactors for CO2 Capture
Processes 2021, 9(9), 1515; https://0-doi-org.brum.beds.ac.uk/10.3390/pr9091515 - 26 Aug 2021
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Carbon dioxide (CO2) is one of the major atmospheric greenhouse gases (GHG). The continuous increase of CO2 concentration and its long atmospheric lifetime may cause long-term negative effects on the climate. It is important to develop technologies to capture and [...] Read more.
Carbon dioxide (CO2) is one of the major atmospheric greenhouse gases (GHG). The continuous increase of CO2 concentration and its long atmospheric lifetime may cause long-term negative effects on the climate. It is important to develop technologies to capture and minimize those emissions into the atmosphere. The objective of this work is to design and study theoretically and experimentally a numbering-up/scale-out membrane microreactor in order to be used as a capture system. The main aim of the work is to obtain an even flow distribution at each plate of the reactor. Nearly uniform flow distribution was achieved at each layer of the numbering-up microreactor according to the carried-out CFD models. The maximum difference between the average velocities was less than 6% for both gas and liquid flows. To obtain better flow distribution into the microreactor, the radius of the inlet/outlet tube was optimized. Results from CFD and experimental simulations do not match, and slightly maldistribution in achieved in the experimental system due to phase breakthrough and imperfections on the fabrication of the plates. Moreover, comparing the single channel microreactor to the scale-out microreactor, the latter showed poorer performance on CO2 removal while expecting the reactors to have similar performance. By installing inserts with different channel widths, the experimental results were identical to the original case. Full article
(This article belongs to the Special Issue Gas Emissions Control and Utilization)
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