Advanced Technologies for Carbon Mitigation and Carbon Utilization

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

Deadline for manuscript submissions: 30 April 2024 | Viewed by 5125

Special Issue Editors

School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: mineral carbonation; solid waste based cementitious materials; mine health and safety; mechanochemistry
Special Issues, Collections and Topics in MDPI journals
School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: mineral materials & utilisation of solid waste: low-carbon slag-based cementitious materials; mine backfill; solidification/stabilisation technology; glass ceramics and foamed ceramics

Special Issue Information

Dear Colleagues,

The global climate has been warming at a pace faster than in any other period since 1850. The average global temperature has seen warming of 1 °C in the last 100 years. The main cause of this rise is the burning of fossil fuels to obtain cheap energy, which emits high levels of greenhouse gases, such as CO2. The international consensus is that the global warming should be kept within 2 °C and that countries should pursue efforts to limit the temperature rise to 1.5 °C relative to pre-industrial levels. To reach these goals, the global community must find affordable and practical solutions for managing carbon.

Currently, various strategies and solutions have been adopted by various countries for the purpose of eliminating anthropogenic CO2 emissions. These approaches include the following: improving energy efficiency; using energy sources that are less carbon-intensive (i.e., natural gas, hydrogen, and nuclear power) or renewable (i.e., solar, wind, hydropower, and geothermal and bio-energy); and enhancing biological sinks (i.e., afforestation and reforestation); and CO2 capture and storage (CCS).

This Special Issue aims to compile contributions (in the form of research articles, letters, reviews, and communications) to update developments in the areas of carbon mitigation and utilization in support of future developments in the low-carbon global economy with net carbon emissions and the availability of reagents.

I kindly invite you to submit a contribution to this Special Issue of Processes, “Advanced Technologies for Carbon Mitigation and Carbon Utilization”.

Dr. Jiajie Li
Dr. Siqi Zhang
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. 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 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

  • CO2 capture
  • CO2 mitigation
  • mineral carbonation
  • CO2 adsorption
  • CO2 conversion
  • materials for CO2 mineralization
  • carbon dioxide fixation
  • carbonation curing
  • accelerated carbonation
  • geological storage
  • biological storage
  • CO2 utilization
  • renewable energy
  • carbon policy
  • energy efficiency

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review

11 pages, 4840 KiB  
Article
Carbon Dioxide Capture and Product Characteristics Using Steel Slag in a Mineral Carbonation Plant
by Hyesung Lee, Tae Wook Kim, Soung Hyoun Kim, Yu-Wei Lin, Chien-Tsung Li, YongMan Choi and Changsik Choi
Processes 2023, 11(6), 1676; https://doi.org/10.3390/pr11061676 - 31 May 2023
Cited by 1 | Viewed by 2036
Abstract
Carbon capture and storage (CCS) technology can reduce CO2 emissions by 85 to 95% for power plants and kilns with high CO2 emissions. Among CCS technologies, carbon dioxide capture using steel slag is a method of carbonating minerals by combining oxidized [...] Read more.
Carbon capture and storage (CCS) technology can reduce CO2 emissions by 85 to 95% for power plants and kilns with high CO2 emissions. Among CCS technologies, carbon dioxide capture using steel slag is a method of carbonating minerals by combining oxidized metals in the slag, such as CaO, MgO, and SiO2, with CO2. This study assessed the amount of CO2 captured and the sequestration efficiency in operating a mineral carbonation plant with a CO2 capture capacity of 5 tons/day by treating the exhaust gas from a municipal waste incinerator and identified the characteristics of the mineral carbonation products. As a result, the average concentration of CO2 in the inflow and outflow gas during the reaction time was 10.0% and 1.1%, respectively, and the average CO2 sequestration efficiency was 89.7%. This resulted in a conversion rate of CaO of > 90%. This study manifested that mineral carbonation products are more stable than steel slag as a construction material and are effective at sequestering CO2 by forming chemically stable CaCO3. Full article
(This article belongs to the Special Issue Advanced Technologies for Carbon Mitigation and Carbon Utilization)
Show Figures

Figure 1

12 pages, 3872 KiB  
Article
Pozzolanic Reactivity and Hydration Products of Cementitious Material Prepared Using Molybdenum Tailings
by Biyao Geng, Zongwen Wang, Shihu Shi, Kun Wang, Jianxun Fu, Zhenjiang Wen and Xiaogang Guo
Processes 2023, 11(4), 1101; https://doi.org/10.3390/pr11041101 - 04 Apr 2023
Cited by 1 | Viewed by 735
Abstract
This study aimed to examine the pozzolanic reactivity and hydration products of cementitious materials prepared using molybdenum tailings. During the grinding process, the particle size of molybdenum tailings decreases continuously between 15 and 60 min, and the specific surface area increases from 367 [...] Read more.
This study aimed to examine the pozzolanic reactivity and hydration products of cementitious materials prepared using molybdenum tailings. During the grinding process, the particle size of molybdenum tailings decreases continuously between 15 and 60 min, and the specific surface area increases from 367 to 932.4 m2/kg. For this, samples were prepared using 91 wt% milled molybdenum tailings, 3 wt% natural gypsum, 6 wt% calcium hydroxide, and a mixture of 0.3 wt% water reducer and water:binder at a ratio of 0.2. The phase transformation and hydration products of molybdenum tailings were analyzed using a compressive strength tester, X-ray diffraction, scanning electron microscopy, and infrared radiation. The 3-, 7-, and 28-day compressive strengths of the samples were found to be 1.67, 3.17, and 3.83 MPa, respectively, which shows that the molybdenum tailings have pozzolanic reactivity. Other testing means showed that the molybdenum tailings are mainly composed of ettringite and C-S-H gel under standard curing conditions, and the collaborative generation process of ettringite and C-S-H gel may exist in this system. Full article
(This article belongs to the Special Issue Advanced Technologies for Carbon Mitigation and Carbon Utilization)
Show Figures

Figure 1

Review

Jump to: Research

23 pages, 1349 KiB  
Review
Evaluation of Potential Factors Affecting Steel Slag Carbonation
by Amer Baras, Jiajie Li, Wen Ni, Zahid Hussain and Michael Hitch
Processes 2023, 11(9), 2590; https://doi.org/10.3390/pr11092590 - 29 Aug 2023
Cited by 4 | Viewed by 1828
Abstract
Steel slag is a solid waste product generated during the carbonation stage of steelmaking. It has high levels of heavy metals and substantial amounts of free calcium and magnesium oxide, making it unsuitable for use as a cement material. Furthermore, the disposal of [...] Read more.
Steel slag is a solid waste product generated during the carbonation stage of steelmaking. It has high levels of heavy metals and substantial amounts of free calcium and magnesium oxide, making it unsuitable for use as a cement material. Furthermore, the disposal of steel slag in landfills requires many resources and can seriously contaminate the surrounding environment. One method of reducing its negative environmental impact is carbonation, which involves reacting steel slag with carbon dioxide to form stable minerals. However, many parameters influence the carbonation efficiency of steelmaking slag, including temperature, time, particle size, pressure, CO2 concentration, liquid-to-solid ratio, moisture content, humidity, additives, etc. To this end, this paper comprehensively reviews the most important steel slag carbonation-influencing factors. Moreover, it compares the characteristics from two perspectives based on their causes and effects on carbonation. Finally, this article reviews earlier studies to identify the factors that affect steel slag carbonation and the potential of carbonated steel slag as a sustainable construction material. Based on previous research, it systematically examines all the elements for future work that need to be improved. Full article
(This article belongs to the Special Issue Advanced Technologies for Carbon Mitigation and Carbon Utilization)
Show Figures

Figure 1

Back to TopTop