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Energies
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Advances in Biomass Energy Conversion and Thermochemical Processes
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Advances in Biomass Energy Conversion and Thermochemical Processes

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A4: Bio-Energy".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 9608

Special Issue Editors

Dr. Carlo Caligiuri

E-Mail Website
Guest Editor
Faculty of Science and Technology, Free University of Bolzano, 39100 Bolzano, Italy
Interests: renewable energy systems; internal combustion engines; gas turbines; cogeneration technologies; remote sensing for renewable energies
Dr. Vittoria Benedetti

E-Mail Website
Guest Editor
Bioenergy and Biofuels Lab, Faculty of Science and Technology, Free University of Bolzano, 39100 Bolzano, Italy
Interests: renewable energy, bioenergy and biofuels; biomass thermochemical conversion processes; fischer-tropsch synthesis; biochar and char valorization; biorefineries; waste valorization
Dr. Massimiliano Renzi

E-Mail Website
Guest Editor
Faculty of Science and Technology, Free University of Bolzano, 39100 Bolzano, Italy
Interests: hydropower; pump-as-turbines; thermal management in automotive powertrains; electrification of vehicles; biofuels; hydrogen-enriched fuels use; cogeneration; internal combustion engines; micro gas turbines; optimization of energy systems; energy storage; energy transition
Special Issues, Collections and Topics in MDPI journals
Dr. Tine Seljak

E-Mail Website
Guest Editor
Laboratory for Internal Combustion Engines and Electromobility, Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva cesta 6, SI-1000 Ljubljana, Slovenia
Interests: fundamental and applied combustion research; alternative fuels; renewable fuels; waste-derived fuels; fuel processing; internal combustion engines; gas turbines; burners; furnaces; incineration; highly oxygenated fuels
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The growing global energy demand and fossil fuel price instability, as well as global warming, climate change issues, energy poverty, and national energy independence are challenges that researchers operating in the energy sector are constantly having to deal with. In such a framework, biomass technologies could play a fundamental role in meeting the ambitious target of the decarbonization of the energy sector through the application of innovative processing techniques as well as adapting current technologies to alternative energy sources.

This proposed Special Issue fits the above-described context, covering original research and studies related to biomass thermochemical processes and energy conversion. Papers selected for this Special Issue are subject to a rigorous peer review procedure with the aim of rapid and wide dissemination of research results, recent developments, and new applications.

Topics of interests include, but are not restricted to:

  • Advanced biomass combustion, pyrolysis, and gasification technologies.
  • Use of biomass producer gas in internal combustion engines and gas turbines
  • Biomass-based cogeneration technologies.
  • Thermodynamic and experimental data-driven modelling of biomass-based energy systems.
  • Single/multi-objective optimization of biomass-based energy systems.
  • Alternative energy sources (e.g., solar energy) for biomass thermochemical processing.
  • Hydrothermal processes (carbonization, liquefaction, gasification).
  • Char valorization.
  • Advances in Biomass-to-hydrogen technology.
  • Remote sensing technologies for biomass estimation.

Dr. Carlo Caligiuri
Dr. Vittoria Benedetti
Prof. Dr. Massimiliano Renzi
Dr. Tine Seljak 
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

  • bioenergy
  • biofuels
  • combustion
  • gasification
  • pyrolysis
  • internal combustion engines
  • gas turbines
  • thermodynamic modeling
  • data driven modeling
  • hydrothermal carbonization
  • hydrothermal liquefaction
  • char
  • biomass to hydrogen

Published Papers (3 papers)

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Research

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20 pages, 3531 KiB  
Article
Lignin Pellets for Advanced Thermochemical Process—From a Single Pellet System to a Laboratory-Scale Pellet Mill
by Sergio Jaimes Rueda, Bruna Rego de Vasconcelos, Xavier Duret and Jean-Michel Lavoie
Energies 2022, 15(9), 3007; https://doi.org/10.3390/en15093007 - 20 Apr 2022
Cited by 2 | Viewed by 2277
Abstract
Lignin pellets were produced using a single pellet system as well as a laboratory-scale pellet mill. The feedstock used in this work was lignin isolated from poplar wood (Populus tremuloides) using a direct saccharification process. An investigation was performed on the [...] Read more.
Lignin pellets were produced using a single pellet system as well as a laboratory-scale pellet mill. The feedstock used in this work was lignin isolated from poplar wood (Populus tremuloides) using a direct saccharification process. An investigation was performed on the influence of the initial moisture content on the dimensions, impact and water resistance, fines content, mechanical durability, calorific value, and ash content, and, finally, the ultimate analysis was performed. These properties were then compared to pellets made from softwood bark using the same pelletization unit. Lignin pellets were then manufactured using four different types of additives (corn oil, citric acid, glycerol, and d-xylose) and ultimately, they were stored in two different conditions prior being tested. In general, manufacturing pellets that were entirely made of lignin generated samples with an overall higher hydrophobicity and higher calorific value. However, the ash and sulfur content of the lignin pellets (1.58% and 0.32% in scenario 2, respectively) were slightly higher than the expected CANplus certification values for Grade A pellets of ≤0.7%, and ≤0.04%, respectively. This study intends to show that lignin could be used to produce this new kind of pellets, pending that the initial material has a low ash and moisture content. Full article
(This article belongs to the Special Issue Advances in Biomass Energy Conversion and Thermochemical Processes)
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14 pages, 1649 KiB  
Article
Efficient Plasma Technology for the Production of Green Hydrogen from Ethanol and Water
by Bogdan Ulejczyk, Łukasz Nogal, Michał Młotek and Krzysztof Krawczyk
Energies 2022, 15(8), 2777; https://doi.org/10.3390/en15082777 - 10 Apr 2022
Cited by 10 | Viewed by 2873
Abstract
This study concerns the production of hydrogen from a mixture of ethanol and water. The process was conducted in plasma generated by a spark discharge. The substrates were introduced in the liquid phase into the reactor. The gaseous products formed in the spark [...] Read more.
This study concerns the production of hydrogen from a mixture of ethanol and water. The process was conducted in plasma generated by a spark discharge. The substrates were introduced in the liquid phase into the reactor. The gaseous products formed in the spark reactor were hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, and ethylene. Coke was also produced. The energy efficiency of hydrogen production was 27 mol(H2)/kWh, and it was 36% of the theoretical energy efficiency. The high value of the energy efficiency of hydrogen production was obtained with relatively high ethanol conversion (63%). In the spark discharge, it was possible to conduct the process under conditions in which the ethanol conversion reached 95%. However, this entailed higher energy consumption and reduced the energy efficiency of hydrogen production to 8.8 mol(H2)/kWh. Hydrogen production increased with increasing discharge power and feed stream. However, the hydrogen concentration was very high under all tested conditions and ranged from 57.5 to 61.5%. This means that the spark reactor is a device that can feed fuel cells, the power load of which can fluctuate. Full article
(This article belongs to the Special Issue Advances in Biomass Energy Conversion and Thermochemical Processes)
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Review

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37 pages, 2183 KiB  
Review
Simulation and Techno-Economic Assessment of Hydrogen Production from Biomass Gasification-Based Processes: A Review
by Jhulimar Castro, Jonathan Leaver and Shusheng Pang
Energies 2022, 15(22), 8455; https://doi.org/10.3390/en15228455 - 12 Nov 2022
Cited by 8 | Viewed by 3626
Abstract
The development of low-carbon fuels from renewable resources is a key measure to reduce carbon dioxide emissions and mitigate climate change. Biomass gasification with subsequent gas processing and purification is a promising route to produce low-carbon hydrogen. In the past decade, simulation-based modelling [...] Read more.
The development of low-carbon fuels from renewable resources is a key measure to reduce carbon dioxide emissions and mitigate climate change. Biomass gasification with subsequent gas processing and purification is a promising route to produce low-carbon hydrogen. In the past decade, simulation-based modelling using Aspen Plus software has supported the investigation of future potential industrial applications of this pathway. This article aims to provide a review of the modelling and economic assessment of woody biomass gasification-based hydrogen production, with focus on the evaluation of the model accuracy in predicting producer gas composition in comparison with experimental data depending on the approach implemented. The assessment of comprehensive models, which integrate biomass gasification with gas processing and purification, highlights how downstream gas processing could improve the quality of the syngas and, thus, the hydrogen yield. The information in this article provides an overview of the current practices, challenges, and opportunities for future research, particularly for the development of a comprehensive pathway for hydrogen production based on biomass gasification. Moreover, this review includes a techno-economic assessment of biomass to hydrogen processes, which will be useful for implementation at industrial-scale. Full article
(This article belongs to the Special Issue Advances in Biomass Energy Conversion and Thermochemical Processes)
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