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Biomass for Biodiesel and Bioethanol Production

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

Deadline for manuscript submissions: 10 September 2025 | Viewed by 2710

Special Issue Editors


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Guest Editor
Defense University Center at the Spanish Naval Academy, Plaza de España s/n, 36920 Marín, Pontevedra, Spain
Interests: renewable energies; biodiesel; bioethanol hydrogen; algae; carbon dioxide capture
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Defense University Center at the Spanish Naval Academy, Plaza de España s/n, 36920 Marín, Pontevedra, Spain
Interests: bioenergy; solid, liquid and gaseous biofuels; biomass (thermochemical valorization, microcogeneration); microalgae (cultivation, algal biomass separation, purification)

Special Issue Information

Dear Colleagues,

The current energy crisis, depletion of fossil fuels, and global climate change have made it imperative to find alternative sources of energy that are both economically sustainable and environmentally friendly. The only renewable resource that can be utilized to make solid, liquid, and gas fuels is biomass. In this sense, production of biofuels from renewable feedstocks has captured considerable scientific attention since they could be used to supply energy and alternative fuels. Several methods have been applied to convert biomass into biofuels (liquid, gaseous, or solid). Determining which approach is best relies on the type of biomass involved, the desired final product, and whether or not it is economically sustainable.

This Special Issue aims to present and disseminate the most recent advances related to biodiesel and bioethanol production from biomass. High-quality original papers that explore areas of biodiesel and bioethanol production are sought. Reviews that provide emerging solutions and visions for future research activities are also invited to contribute to this Special Issue. Topics of interest for publication include, but are not limited to:

  • Biodiesel or bioethanol production.
  • Biomass conversion: biochemical, thermochemical, etc.
  • Biomass-derived fuels and chemicals.
  • Biomass residues valorization.
  • Novel technologies in biofuels production.
  • Separation and purification processes.
  • State-of-the-art biodiesel and bioethanol conversion technology.
  • Kinetic-based modeling of biofuel production.

Dr. Rocio Maceiras
Dr. Leticia Pérez-Rial
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

  • biomass
  • biodiesel
  • bioethanol

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Published Papers (2 papers)

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Research

20 pages, 1474 KiB  
Article
Producing and Testing the Properties of Biodiesel Sourced from Hemp Oil
by Dariusz Kurczyński and Grzegorz Wcisło
Energies 2024, 17(23), 5950; https://doi.org/10.3390/en17235950 - 27 Nov 2024
Viewed by 843
Abstract
Organic matter is converted into a variety of fuels, including potential replacements for transport fuels. New sources of raw materials are being sought for their acquisition. One such raw material that is currently attracting a growing degree of attention is hemp. The objective [...] Read more.
Organic matter is converted into a variety of fuels, including potential replacements for transport fuels. New sources of raw materials are being sought for their acquisition. One such raw material that is currently attracting a growing degree of attention is hemp. The objective of this study was to produce biodiesel from hemp oil to ascertain its selected properties and to compare them with the properties of biodiesel obtained from rapeseed oil and the properties of diesel fuel. A reactor designed for the non-industrial, local conversion of available raw materials into fatty acid esters was used for the manufacture of biodiesel. The properties of hemp oil biodiesel were evaluated in comparison with those of rapeseed oil biodiesel, with properties of diesel fuel, and with the requirements set forth in the EN 14214 standard, pertaining to the specification of fatty acid methyl esters for utilization in compression-ignition internal combustion engines. The kinematic viscosity value of the hemp oil biodiesel yielded just below the upper limit defined in the standard. Furthermore, research has demonstrated that such biodiesel contains a considerable proportion of esters of linoleic and linolenic acids, which are susceptible to oxidation. The content of linolenic acid ester in esters produced from hemp oil is clearly higher than the content of this ester in esters obtained from rapeseed oil. This higher content contributes to the high value of the iodine number, significantly exceeding the standard requirements. The remaining designated properties of hemp oil biodiesel are in accordance with the requirements laid down in the standard and exhibit similarities to those of rapeseed oil biodiesel. Further research is recommended to enhance the characteristics of hemp oil biodiesel and its utilization in compression-ignition engines. Full article
(This article belongs to the Special Issue Biomass for Biodiesel and Bioethanol Production)
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12 pages, 2726 KiB  
Article
Transforming Wastewater into Biofuel: Nutrient Removal and Biomass Generation with Chlorella vulgaris
by Jose Luis Salgueiro, Leticia Perez-Rial, Rocio Maceiras, Angel Sanchez and Angeles Cancela
Energies 2024, 17(19), 4911; https://doi.org/10.3390/en17194911 - 30 Sep 2024
Cited by 1 | Viewed by 1300
Abstract
This study investigates the potential of Chlorella vulgaris for nutrient removal and biomass production in synthetic wastewater. The experiments were conducted in 2 L photobioreactors under controlled aeration, agitation, and lighting conditions for 19 days. Despite a moderate growth rate (0.137 d−1 [...] Read more.
This study investigates the potential of Chlorella vulgaris for nutrient removal and biomass production in synthetic wastewater. The experiments were conducted in 2 L photobioreactors under controlled aeration, agitation, and lighting conditions for 19 days. Despite a moderate growth rate (0.137 d−1), C. vulgaris achieved efficient pollutant removal, with 97% of nitrate, 90% of nitrite, and 90.6% of COD eliminated. Additionally, the biomass was processed to extract fatty acids, yielding a 20% extraction rate, indicating its potential as a biofuel feedstock. These results demonstrate C. vulgaris’s dual function in wastewater remediation and biofuel production, presenting a sustainable and economically viable approach to addressing environmental challenges. Full article
(This article belongs to the Special Issue Biomass for Biodiesel and Bioethanol Production)
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