Special Issue "Novel Technologies for Carbon Dioxide Sequestration"

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "Bio-Energy".

Deadline for manuscript submissions: 31 July 2021.

Special Issue Editor

Prof. Dr. Jorge Gabitto
E-Mail Website
Guest Editor
Chemical Engineering Department, Prairie View A&M University. Prairie View, TX 77446, USA.
Interests: carbon dioxide sequestration methods; water purification and heavy ion separation by electrochemical methods; blue energy production cycles

Special Issue Information

Dear Colleagues,

Greenhouse gases, especially carbon dioxide, pose a significant threat to human societies all over the planet. The burning of fossil fuels has led to an increase in the atmospheric CO2 concentration of more than 45% relative to the pre-industrial era. In the USA alone, power plant CO2 releases comprise 55% of total CO2 emissions. Until a successful transition to renewal energy sources is accomplished, there is an urgent need for CO2 capture technologies from concentrated sources. There are also many methods that attempt to capture carbon dioxide from air or even the sea. Process intensification is a technique that reduces operating and capital costs by combining chemical reactions and separation operations, thus significantly increasing the efficiency of the process.

The goal of this Special Issue is to present novel carbon dioxide sequestration technologies that are technically feasible, cost-effective, and environmental friendly; the scope includes, new technologies and significant improvements on existent processes. Articles discussing concentrated sources and direct carbon capture technologies are welcomed, particularly process intensification processes with the potential to reduce capital and operating costs.

Prof. Dr. Jorge Gabitto
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. Energies 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 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.

Keywords

  • CO2 sequestration
  • novel technologies
  • energy savings
  • concentrated sources
  • direct capture
  • process intensification

Published Papers

This special issue is now open for submission, see below for planned papers.

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

A Combined Chemical-Electrochemical Process to Capture CO2 and Produce Hydrogen and Electricity

  1. Shamim,1 Sh. Binzaid2, J. F. Gabitto,1*and J. Attia2

1Department of Chemical Engineering, Prairie View A&M University

2Department of Electrical & Computer Engineering, Prairie View A&M University

3Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN, 37831

*Correspondence: P.O. Box 519, MS 2505, Prairie View, TX, 77446, [email protected], (936) 261-9409

Several carbon sequestration technologies have been proposed to utilize carbon dioxide (CO2) to produce energy and chemical compounds. However, feasible technologies have not been adopted due to the low efficiency conversion rate and high-energy requirements. In this work, we present a chemical-electrochemical cyclical process that can capture carbon dioxide as a bicarbonate salt. The proposed process also produces hydrogen and electrical energy. Carbon capture is enhanced by the reaction at the cathode that displaces the equilibrium into bicarbonate production. The cyclic process can produce stable operation for long times by preserving ionic balance using a suitable ionic membrane that regulates ionic flows between the two half-cells. Numerical simulations and experiments have validated the proof of concept. The proposed process could serve as a novel CO2 sequestration technology while producing electrical energy and hydrogen.

 

A Process Intensification Approach for CO2 Absorption using Amino Acid Solutions and a guanidine compound

  1. F. Gabitto,1* R. Custelcean,2 and C. Tsouris2

1Department of Chemical Engineering, Prairie View A&M University

2Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN, 37831;

  1. Custelcean: [email protected], (865) 574-5018 C. Tsouris: [email protected], (865) 241-3246

*Correspondence: P.O. Box 519, MS 2505, Prairie View, TX, 77446, [email protected], (936) 261-9409

Environmentally friendly aqueous amino-acid solutions can be used for the separation of carbon dioxide from concentrated flue-gas streams via chemical absorption. Process intensification reduces operating and capital costs by combining chemical reactions and separation operations. Here, we present a new process-intensification approach that combines the CO2 absorption and the amino-acid regeneration processes into a single step carried out in a slurry three-phase reactor. The absorbed CO2 precipitates as a solid carbonated guanidine compound. The cycle is completed by separation of the solid precipitate to strip the CO2 and regenerate the guanidine compound, while the liquid solution is recycled to the slurry reactor. The process was studied by modifying a model developed by the authors for a gas-liquid bubble column without the presence of the guanidine compound. The guanidine precipitation reaction was accounted for using kinetic parameters calculated by the authors. The proposed model was implemented by modifying an existent computer code used for simulation of gas-liquid bubble columns. The calculated results showed that the proposed cycle can significantly reduce energy, equipment, and operating costs and can make an important contribution to developing a competitive cost-effective large-scale process for CO2 capture.

 

 

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