Special Issue "Thermodynamic Research on Inorganic Materials for Sustainable Processes and Applications"

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

Deadline for manuscript submissions: 31 July 2021.

Special Issue Editors

Dr. Fiseha Tesfaye
E-Mail Website
Guest Editor
Faculty of Science and Engineering, Åbo Akademi University, Turku FI-20500, Finland
Interests: metallurgical thermodynamics; extractive metallurgy; recycling; energy materials; circular economy; electrochemistry; chalcogenide and intermetallic materials; sulfosalts and sulfates characterizations; metallurgical engineering; metals; renewable energy
Dr. Minkyu Paek
E-Mail Website
Guest Editor
Department of Chemical and Metallurgical Engineering, Aalto University, Helsinki 02150, Finland
Interests: Thermodynamic modeling; process simulation of pyrometallurgical process; hydrogen reduction kinetics; steelmaking process; recycling of industrial waste
Special Issues and Collections in MDPI journals
Prof. Dr. Daniel K. Lindberg
E-Mail Website
Guest Editor
Department of Chemical and Metallurgical Engineering, Aalto University, Helsinki 02150, Finland
Interests: combustion technology; waste-to-energy; thermodynamic modeling; inorganic chemistry; sulfates and chlorides; alkali/alkaline earth salts; melts, recycling of industrial waste; metallurgical thermodynamics; circular economy; metals, renewable energy
Prof. Dr. Leena Hupa
E-Mail Website
Guest Editor
Faculty of Science and Engineering, Åbo Akademi University, FI-20500 Turku, Finland
Interests: alternative energy; ceramic materials; inorganic materials; inorganic chemistry; bio-active materials; recycling; circular economy; materials science and engineering

Special Issue Information

Dear Colleagues,

Clean energy supply shortage is becoming increasingly a concern with economic development and population growth. To address this issue, extensive databases of inorganic materials targeting the advancement of clean energy and materials technologies need to be developed.

Many efforts on energy materials research have been recently made, leading to encouraging progress towards higher performance energy applications. However, the high temperature industrial waste heat recovery poses a challenge for the selection of inorganic thermoelectric materials. The unique combination of high temperature, low heat-flux, and large surface area of waste heat generation in industrial processes such as pyrometallurgical processes means active material cost is the main obstacle. In general, the continuing search for high-performance and cost-effective energy storage and conversion materials involves the determination of thermal stabilities, phase transformations, phase equilibria with coexisting phases, and thermodynamic properties.

In the combustion processes of biomass, municipal wastes and industrial side streams fouling, slagging, and corrosion emanating from inorganic impurities are costly and threaten the long-term operation of power plants. To control the problematic inorganic materials deposition on the surfaces of superheater and boiler tubes, experimental and thermodynamic modeling of inorganic phases such as sulfates and chlorides in the combustion processing temperature conditions are required.

The special topic on “Thermodynamic Research on Inorganic Materials for Sustainable Processes and Applications” aims to frame a comprehensive discussion and data sharing on inorganic materials research that enable the advancement of the clean energy and materials technology. In view of this, we welcome original and review papers of researchers in both industry and academia in the areas, but not be limited to;

  • experiments on phase formation/synthesis and determination of thermal stabilities, transformations, and melting of inorganic materials
  • comprehensive review on phase equilibria and thermodynamic investigation
  • characterization of new energy conversion and storage inorganic materials
  • thermodynamic modeling of problematic inorganic phases in the waste combustion processes
  • fouling, slagging, and corrosion related issues in the combustion of biomass, municipal waste and industrial side streams
  • emission control pertaining to the renewable energy industries
  • cost-effective thermoelectric materials for industrial heat and energy recoveries
  • high-performance and cost-effective thermoelectric materials in the automotive industry
  • lightweight inorganic materials for energy efficiency

Papers providing perspective on technical challenges or broader inorganic materials technology challenges toward energy sustainability are also welcome.

Dr. Fiseha Tesfaye
Dr. Minkyu Paek
Prof. Dr. Daniel K. Lindberg
Prof. Leena Hupa
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. 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

  • Inorganic materials 
  • Energy materials 
  • Experimental techniques for inorganic materials research 
  • Thermodynamic modeling and Phase diagrams 
  • Thermoelectric materials 
  • Inorganic impurities in renewable energy power plants 
  • Lightweight inorganic materials for energy efficiency 
  • Refractories 
  • Ceramic materials 
  • Circular economy in the energy industry 
  • Recycling of thermoelectric materials 
  • Emission control in the energy sector 
  • Energy efficient processes

Published Papers (2 papers)

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Research

Article
Pyrolysis of Municipal Sewage Sludge to Investigate Char and Phosphorous Yield together with Heavy-Metal Removal—Experimental and by Thermodynamic Calculations
Energies 2021, 14(5), 1477; https://doi.org/10.3390/en14051477 - 08 Mar 2021
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Abstract
Sewage sludge is regarded as a potential source for soil fertilizer However, the direct utilization of sewage sludge in agricultural land is restricted since it also contains heavy metals, pathogens, and toxic compounds. Pyrolysis of the sewage sludge destroys the organic pollutants and [...] Read more.
Sewage sludge is regarded as a potential source for soil fertilizer However, the direct utilization of sewage sludge in agricultural land is restricted since it also contains heavy metals, pathogens, and toxic compounds. Pyrolysis of the sewage sludge destroys the organic pollutants and partly volatilizes the heavy metals. In this study, pyrolysis of sewage sludge was carried out in order to determine the optimum residence time and temperature to recover the phosphorous and remove heavy metals from the resultant sewage sludge char (SSC). Pyrolysis was conducted on dried sewage sludge (DSS) by means of thermogravimetric analysis (TGA) and high-temperature oven with an N2-atmosphere. Microwave Plasma-Atomic Emission Spectroscopy (MP-AES) was used to determine the concentration of P and trace elements in the resulting solid char fraction. A combination of chemical fractionation (step-by-step leaching) of the DSS and thermodynamic equilibrium calculations were utilized to estimate the availability of phosphorous and removal of heavy metals in the SSC fraction at different temperatures. The results from the thermodynamics calculation were in line with the measured chemical composition of the SSC. Furthermore, the energy contents of the SSC obtained at different temperatures were measured. The pyrolysis evaluation results indicate that phosphorous was enriched in the char, while lead, zinc, and cadmium were significantly removed. Full article
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Article
The Equilibrium Phase Formation and Thermodynamic Properties of Functional Tellurides in the Ag–Fe–Ge–Te System
Energies 2021, 14(5), 1314; https://doi.org/10.3390/en14051314 - 28 Feb 2021
Viewed by 403
Abstract
Equilibrium phase formations below 600 K in the parts Ag2Te–FeTe2–F1.12Te–Ag2Te and Ag8GeTe6–GeTe–FeTe2–AgFeTe2–Ag8GeTe6 of the Fe–Ag–Ge–Te system were established by the electromotive force (EMF) method. [...] Read more.
Equilibrium phase formations below 600 K in the parts Ag2Te–FeTe2–F1.12Te–Ag2Te and Ag8GeTe6–GeTe–FeTe2–AgFeTe2–Ag8GeTe6 of the Fe–Ag–Ge–Te system were established by the electromotive force (EMF) method. The positions of 3- and 4-phase regions relative to the composition of silver were applied to express the potential reactions involving the AgFeTe2, Ag2FeTe2, and Ag2FeGeTe4 compounds. The equilibrium synthesis of the set of phases was performed inside positive electrodes (PE) of the electrochemical cells: (−)Graphite ‖LE‖ Fast Ag+ conducting solid-electrolyte ‖R[Ag+]‖PE‖ Graphite(+), where LE is the left (negative) electrode, and R[Ag+] is the buffer region for the diffusion of Ag+ ions into the PE. From the observed results, thermodynamic quantities of AgFeTe2, Ag2FeTe2, and Ag2FeGeTe4 were experimentally determined for the first time. The reliability of the division of the Ag2Te–FeTe2–F1.12Te–Ag2Te and Ag8GeTe6–GeTe–FeTe2–AgFeTe2–Ag8GeTe6 phase regions was confirmed by the calculated thermodynamic quantities of AgFeTe2, Ag2FeTe2, and Ag2FeGeTe4 in equilibrium with phases in the adjacent phase regions. Particularly, the calculated Gibbs energies of Ag2FeGeTe4 in two different adjacent 4-phase regions are consistent, which also indicates that it has stoichiometric composition. Full article
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