Energy and Metals Recovery with Associated Corrosion Issues

Topic Information

Dear Colleagues,

Since the second industrial revolution, fossil fuels such as coal and oil have been the main source of electricity, releasing large amounts of greenhouse gases. At present, renewable energies are established as the path toward a new energy and industrial model that is more sustainable and respectful of the environment. The high demand for energy worldwide has transitioned the world to the manufacture and use of electrochemical devices. This represents progress toward environmentally friendly processes that efficiently help the recovery of metals and/or energy and energy storage. Metal recovery is a topic of global interest, due to the high demand for materials dedicated to the manufacture of batteries, such as Co, Pb, Li, Ni, Na, Fe, Ti, Mn, Mo, and Cr, among others, using conventional and non-conventional extraction metallurgy processes. On the other hand, the available concentrated electrolytes, such as seawater, brines from osmosis processes, and natural brines from underground and weather-exposed ponds in arid regions that are partly used for the recovery of Li, is a matter of controversy. For this case potential process, improvements can be achieved combining either the recovery of energy, green H2 production, and the recovery of precious metals. Currently, electrochemical processes are being considered in the processing of minerals and industry in general, due to its advantages of power supply by renewable sources such as solar, wind, geothermal, marine, biomass energy, and non-conventional renewable energy recovery technologies. However, it is necessary to develop technological innovations to increase/optimize the recovery of metals and energy of interest through non-conventional processes; reuse industrial waste to lower production costs; and reduce water consumption to minimize environmental impacts and understand their corrosion, potential problems, and behavior that reduce the service life of electrochemical devices. This Special Issue, “Energy and metals recovery with associated corrosion issues”, is for the recovery of energy and metal processes from available aqueous solutions, either fresh or sea water, and brines, either natural or effluents from power or desalination plants, in a framework of unconventional sources of energy (solar, wind, etc.). This includes all relevant aspects of electrochemical processes from electrode materials, basic corrosion mechanisms affecting all exposed materials of the processing equipment in saline media (fresh, seawater, or saline waters), and kinetic studies under quiescent and hydrodynamic conditions. Issues of new electrode materials for energy and metal recovery, process efficiencies, corrosion prevention issues, and pilot experiments are also welcome.

Dr. Norman Toro
Dr. Luis Cáceres
Prof. Dr. Edward L. Fuentealba
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Materials materials	3.4	5.2	2008	13.9 Days	CHF 2600	Submit
Metals metals	2.9	4.4	2011	15 Days	CHF 2600	Submit
Minerals minerals	2.5	3.9	2011	18.7 Days	CHF 2400	Submit
Polymers polymers	5.0	6.6	2009	13.7 Days	CHF 2700	Submit

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Published Papers (2 papers)

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25 pages, 5237 KiB  

Open AccessReview

Cellular Automata Modeling as a Tool in Corrosion Management

by Juan C. Reinoso-Burrows, Norman Toro, Marcelo Cortés-Carmona, Fabiola Pineda, Mauro Henriquez and Felipe M. Galleguillos Madrid

Materials 2023, 16(17), 6051; https://doi.org/10.3390/ma16176051 - 03 Sep 2023

Cited by 1 | Viewed by 1301

Abstract

Cellular automata models have emerged as a valuable tool in corrosion management. This manuscript provides an overview of the application of cellular automata models in corrosion research, highlighting their benefits and contributions to understanding the complex nature of corrosion processes. Cellular automata models [...] Read more.

Cellular automata models have emerged as a valuable tool in corrosion management. This manuscript provides an overview of the application of cellular automata models in corrosion research, highlighting their benefits and contributions to understanding the complex nature of corrosion processes. Cellular automata models offer a computational approach to simulating corrosion behavior at the microscale, capturing the intricate interactions between electrochemical reactions, material properties, and environmental factors and generating a new vision of predictive maintenance. It reviews the key features of cellular automata, such as the grid-based representation of the material surface, the definition of state variables, and the rules governing cell-state transitions. The ability to model local interactions and emergent global behavior makes cellular automata particularly suitable for simulating corrosion processes. Finally, cellular automata models offer a powerful and versatile approach to studying corrosion processes, expanding models that can continue to enhance our understanding of corrosion and contribute to the development of effective corrosion prevention and control strategies. Full article

(This article belongs to the Topic Energy and Metals Recovery with Associated Corrosion Issues)

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13 pages, 6516 KiB  

Open AccessArticle

Corrosion of Reinforced A630-420H Steel in Direct Contact with NaCl Solution

by Felipe M. Galleguillos Madrid, Alvaro Soliz, Luis Cáceres, Sebastian Salazar-Avalos, Danny Guzmán and Edelmira Gálvez

Materials 2023, 16(17), 6017; https://doi.org/10.3390/ma16176017 - 01 Sep 2023

Viewed by 1068

Abstract

The deterioration of reinforced concrete structures in marine environments presents multiple problems due to the premature degradation of reinforced steel. This work aimed to study the corrosion of reinforced A630-420H steel when exposed to a 0.5 M NaCl solution. Although this carbon steel [...] Read more.

The deterioration of reinforced concrete structures in marine environments presents multiple problems due to the premature degradation of reinforced steel. This work aimed to study the corrosion of reinforced A630-420H steel when exposed to a 0.5 M NaCl solution. Although this carbon steel is the most widely used material for reinforced concrete structures in Chile, there is limited research on its resistance to corrosion when in contact with saline solutions. The electrochemical reactions and their roles in the corrosion rate were studied using linear sweep voltammetry, weight loss, scanning electron microscopy, and X-ray diffraction techniques. This analysis is unique as it used the superposition model based on mixed potential theory to determine the electrochemical and corrosion parameters. The outcomes of this study show that A630-420H steel has a higher corrosion rate than those of the other commercial carbon steels studied. This fact can be attributed to the competition between the cathodic oxygen reduction reaction and hydrogen evolution reaction, which also depends on the environmental conditions, exposure time, stabilization of the corrosion products layer, and presence of chloride ions. Additionally, the results under mechanical stress conditions show a brittle fracture of the corrosion product oriented longitudinally in the direction of the bend section, where the presence of pores and cracks were also observed. The corrosion products after corrosion were mainly composed of magnetite and lepidocrocite oxide phases, which is in concordance with the electrochemical results. Full article

(This article belongs to the Topic Energy and Metals Recovery with Associated Corrosion Issues)

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