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Alternative Fuels in Transportation
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Alternative Fuels in Transportation

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I1: Fuel".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 6501

Special Issue Editors

Dr. Tamás Mizik

E-Mail Website1 Website2
Guest Editor
Department of Agricultural Economics, Corvinus University of Budapest, 1093 Budapest, Hungary
Interests: agricultural policies (especially the Common Agricultural Policy); biofuels; international agri-food trade; agricultural competitiveness and profitability
Prof. Dr. Attila Bai

E-Mail Website1 Website2
Guest Editor
Department of Business Economics, Institute of Applied Economics, Faculty of Economics and Business, University of Debrecen, 4032 Debrecen, Hungary
Interests: economic evaluation of biomass for energy use; economics of solar energy; complex energy systems; energy plants and plantations; feasibility of renewable energy plants; investment analysis
Special Issues, Collections and Topics in MDPI journals
Dr. Zoltán Gabnai

E-Mail Website1 Website2
Guest Editor
Department of Business Economics, Institute of Applied Economics, Faculty of Economics and Business, University of Debrecen, 4032 Debrecen, Hungary
Interests: feasibility and economic evaluation of renewable energies (especially biomass and solar energy); energy plants and plantations; waste management; complex energy systems and circular economy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Humanity is facing a major challenge in attempting to decarbonize the planet. In the age of modern transportation, what fuels our vehicles is a key issue. Switching from fossil resources to renewables is essential from many aspects, such as the depletion of fossil energies, greenhouse gas emissions, global warming, and concerns about the limited potential of renewable fuels.

Alternative fuels include any first- or next-generation transportation fuels, regardless of their biomass or other origins, which can be a substitute for conventional oil or other fossil products. This Special Issue aims to provide a deeper insight into the actual state and future expectations of alternative fuels. Authors are encouraged to submit original papers analyzing a given type of alternative fuels or even comparing them. Theoretical and empirical studies written in a novel and innovative approach in this field are also welcome.

This Special Issue will focus mainly on alternative fuels, which may include:

  • Conventional and advanced biofuels;
  • Other renewable fuels (e.g., electricity, hydrogen/fuel cell, landfill methane);
  • Economic, technological, environmental, and energy policy aspects;
  • Potential estimates;
  • Energy efficiency and emission calculations;
  • Complex energy systems, local self-sufficiency, circular economy in renewable fuel systems (e.g., biomethane in local public transport);
  • Case studies, investment analysis;
  • Energy plants and plantations in the context of biofuel production.

We would like to encourage researchers to publish their original experimental and theoretical results in our Special Issue, regarding any aspect of alternative fuels.

Dr. Tamás Mizik
Prof. Dr. Attila Bai
Dr. Zoltán Gabnai
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. 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 2600 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

  • Ethanol
  • Biodiesel
  • Electricity
  • Electric vehicles, plug-in hybrids, FFV
  • Biogas, biomethane
  • (green) hydrogen
  • Circular economy
  • Advanced biofuels
  • Energy plants for biofuel production
  • Economic, technological, environmental and energy policy

Published Papers (3 papers)

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Research

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17 pages, 2057 KiB  
Article
Operational Issues of Using Replacement Fuels to Power Internal Combustion Engines
by Zdzisław Chłopek, Hubert Sar, Krystian Szczepański and Dagna Zakrzewska
Energies 2023, 16(6), 2643; https://doi.org/10.3390/en16062643 - 10 Mar 2023
Cited by 1 | Viewed by 1161
Abstract
The classification of engine fuels was systematised in the present study. The basic evaluation criterion included the type of raw material used for the production of motor fuel and the prevalence of its usage. There was a reason for the purposefulness of searching [...] Read more.
The classification of engine fuels was systematised in the present study. The basic evaluation criterion included the type of raw material used for the production of motor fuel and the prevalence of its usage. There was a reason for the purposefulness of searching for new kinds of engine fuels not only for the sake of environmental protection but also for the rational use of natural resources. The concept of substitute fuels was methodically presented. The criteria for the qualification of substitute fuels for internal combustion engines were systematised. Using the example of fuels produced from bio-oils, tests were carried out to assess the prospects of considering bio-oil fuels as substitute ones for self-ignition engines. Accordingly, an analysis was, inter alia, conducted on the fuel combustion process in the cylinder of a test self-ignition engine. Based on the results obtained, the thesis was formulated that rapeseed methyl ester (RME) fuel can be considered a substitute fuel for modern self-ignition engines. There are no significant differences between the physicochemical properties between DF diesel fuel and B100 fuel apart from a significantly higher oxygen mass content in B100. The torque of an internal combustion engine is regularly higher for diesel fuel. The use of B100 fuel enables a measurable reduction in pollutant emissions. The working factor pressure in the cylinder is slightly lower when the engine is powered by B100. The relative heat release rate for B100 is slightly lower compared to DF diesel. Full article
(This article belongs to the Special Issue Alternative Fuels in Transportation)
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18 pages, 3494 KiB  
Article
Pyrolysis Oils from Used Tires and Plastic Waste: A Comparison of a Co-Processing with Atmospheric Gas Oil
by Martin Pšenička, Anna Roudová, Aleš Vráblík and Radek Černý
Energies 2022, 15(20), 7745; https://doi.org/10.3390/en15207745 - 19 Oct 2022
Cited by 1 | Viewed by 1592
Abstract
This study aimed to determine the effect of the supplied pyrolysis oils (oils obtained from the pyrolysis of used tyres and the depolymerisation of plastics) on the activity of the hydrodesulphurisation catalyst. Each pyrolysis oil was added at 20% weight to a standard [...] Read more.
This study aimed to determine the effect of the supplied pyrolysis oils (oils obtained from the pyrolysis of used tyres and the depolymerisation of plastics) on the activity of the hydrodesulphurisation catalyst. Each pyrolysis oil was added at 20% weight to a standard feedstock and processed on pilot plant reactors under the set conditions of a commercial unit, including an activated catalyst. Following the catalyst stabilisation, the standard material was changed to the mixture with the pyrolysis oils. The reaction conditions, particularly the reaction temperature, were controlled. The results of the product analyses were compared with the EN 590 standard for evaluating diesel fuel; the hydrogenated mixed fuel meets most requirements. Only the density, flash point, distillation curve and lubricity have minor deviations, which could be adjusted by treating the sample before or after hydrogenation. The properties of the products, in terms of the low-temperature properties, were also investigated. The tyre-derived pyrolysis oils showed improved low-temperature properties, possibly due to the higher levels of the aromatic hydrocarbons. The pyrolysis oil obtained from the depolymerisation of the plastics was found to be more suitable for use in refineries without substantially impacting the existing technologies. For the tyre-derived pyrolysis oils, higher reaction temperatures were required for processing, which could affect the catalyst operation. Full article
(This article belongs to the Special Issue Alternative Fuels in Transportation)
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Review

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14 pages, 3296 KiB  
Review
Quantitative Design of a New e-Methanol Production Process
by Alfred Rufer
Energies 2022, 15(24), 9309; https://doi.org/10.3390/en15249309 - 08 Dec 2022
Viewed by 2422
Abstract
In the context of the need to significantly reduce greenhouse gas emissions from personal transportation, a new process for the production of e-methanol is presented. It is a CO2 hydrogenation process, powered mainly by renewable energy sources such as photovoltaic electricity, with [...] Read more.
In the context of the need to significantly reduce greenhouse gas emissions from personal transportation, a new process for the production of e-methanol is presented. It is a CO2 hydrogenation process, powered mainly by renewable energy sources such as photovoltaic electricity, with direct capture of carbon dioxide from the ambient air. With the main objective of estimating the feasibility and the impact of such a large-scale plant, the various components are evaluated in terms of masses and quantities necessary for an annual fuel production of 500,000 tons. The main reactor is analyzed to assess the required quantities of hydrogen and CO2. The production of hydrogen from the electrolysis of water is estimated, as well as the electrical power required and supplied by a large photovoltaic plant. The size of a realistic plant and its footprint are estimated. In addition, the mass of seawater to be desalinized and split in the electrolyser is calculated. The CO2 capture system is evaluated in the form of the mass of air to be extracted from the ambient air. The parameters of the system and its subcomponents are summarized for ease of understanding of the significance and size of the processing plant. Full article
(This article belongs to the Special Issue Alternative Fuels in Transportation)
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