Sustainability

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Dear Colleagues,

Over the past few decades, atmospheric carbon dioxide (CO₂) concentrations have risen steeply. In May 2019, atmospheric CO₂ reached 415 ppm, a level higher than any reached in more than 800,000 years. With increasing evidence of global warming and its correlation with CO₂ emissions, the development of cost-effective, large-scale, and efficient processes for carbon capture, utilization, and storage (CCUS) is critical. A substantial volume of research on developing CCUS technologies was carried out during the last few decades. However, due to the urgent need to mitigate climate change, CCUS technologies have experienced a recent resurgence. In this context, several new concepts have been recently introduced and developed to advance CCUS in various aspects, including innovative approaches for CO₂ capture and conversion as well as new methods of sequestration and mineralization. These technologies eventually enable effective mitigation of CO₂ emissions, which is an essential step towards addressing climate change issues. Therefore, this Special Issue is designed to focus on updating the research community with the latest advances and prospects on various aspects of the CCUS processes. Researchers are invited to submit their original research as well as review/perspective articles for publication in this Special Issue. Potential topics include, but are not limited to, carbon capture technologies (e.g., thermal and pressure swing processes, membrane systems, electrochemical approaches), CO₂ utilization (e.g., electrochemical reduction, photochemical and biochemical conversions), and CO₂ storage (e.g., CO₂ mineralization and sequestration, enhanced oil recovery).

Dr. Mohammad (Mim) Rahimi
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. Sustainability 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 2400 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

Carbon capture
CO₂ utilization
CO₂ storage
Direct air capture
Thermal swing processes
Pressure swing processes
Membrane systems for CO₂ separation
Electrochemical CO₂ capture
Post-combustion CO₂ capture
Pre-combustion CO₂ capture
Oxy-combustion CO₂ capture
Calcium carbonate looping
Adsorption processes
Thermal amine scrubbing
Chemical production from CO₂
Electrochemical CO₂ reduction
Photochemical and photoelectrochemical
CO₂ reduction
Biochemical CO₂ conversion
CO₂ mineralization
CO₂ sequestration
Enhanced oil recovery
Enhanced gas recovery
Ocean CO₂ storage

Published Papers (2 papers)

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Research

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21 pages, 2711 KiB

Open AccessArticle

Experimental Study on the Interplay between Different Brine Types/Concentrations and CO₂ Injectivity for Effective CO₂ Storage in Deep Saline Aquifers

by Donatus Ephraim Edem, Muhammad Kabir Abba, Amir Nourian, Meisam Babaie and Zainab Naeem

Sustainability 2022, 14(2), 986; https://doi.org/10.3390/su14020986 - 16 Jan 2022

Cited by 7 | Viewed by 2845

Abstract

Salt precipitation during CO₂ storage in deep saline aquifers can have severe consequences on injectivity during carbon storage. Extensive studies have been carried out on CO₂ solubility with individual or mixed salt solutions; however, to the best of the authors’ knowledge, there is no substantial study to consider pressure decay rate as a function of CO₂ solubility in brine, and the range of brine concentration for effective CO₂ storage. This study presents an experimental core flooding of the Bentheimer sandstone sample under simulated reservoir conditions to examine the effect of four different types of brine at a various ranges of salt concentration (5 to 25 wt.%) on CO₂ storage. Results indicate that porosity and permeability reduction, as well as salt precipitation, is higher in divalent brines. It is also found that, at 10 to 20 wt.% brine concentrations in both monovalent and divalent brines, a substantial volume of CO₂ is sequestered, which indicates the optimum concentration ranges for storage purposes. Hence, the magnitude of CO₂ injectivity impairment depends on both the concentration and type of salt species. The findings from this study are directly relevant to CO₂ sequestration in deep saline aquifers as well as screening criteria for carbon storage with enhanced gas and oil recovery processes. Full article

(This article belongs to the Special Issue New Frontiers in Carbon Capture, Utilization and Storage (CCUS))

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Other

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4 pages, 352 KiB

Open AccessOpinion

Public Awareness: What Climate Change Scientists Should Consider

by Mohammad Rahimi

Sustainability 2020, 12(20), 8369; https://doi.org/10.3390/su12208369 - 12 Oct 2020

Cited by 16 | Viewed by 4588

Abstract

In this Opinion, the importance of public awareness to design solutions to mitigate climate change issues is highlighted. A large-scale acknowledgment of the climate change consequences has great potential to build social momentum. Momentum, in turn, builds motivation and demand, which can be leveraged to develop a multi-scale strategy to tackle the issue. The pursuit of public awareness is a valuable addition to the scientific approach to addressing climate change issues. The Opinion is concluded by providing strategies on how to effectively raise public awareness on climate change-related topics through an integrated, well-connected network of mavens (e.g., scientists) and connectors (e.g., social media influencers). Full article

(This article belongs to the Special Issue New Frontiers in Carbon Capture, Utilization and Storage (CCUS))

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