energies-logo

Journal Browser

Journal Browser

Optimized Production of Bioenergy, Biofuels, and Biogas

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

Deadline for manuscript submissions: 30 July 2026 | Viewed by 1983

Special Issue Editor


E-Mail Website
Guest Editor
Laboratoire des Fluides Complexes et leurs Réservoirs, University Pau & Pays Adour, UMR 5150–LFC-R, CNRS, BP 1155, F-64013 Pau, France
Interests: biomass energy; biogas production; biofuels

Special Issue Information

Dear Colleagues,

The Guest Editor is inviting submissions to a Special Issue of Energies on the subject area of “Optimized production of Bioenergy, Biofuels, and Biogas”. This Special Issue of Energies is intended to present a broad range of scientific challenges in relation to all aspects of bioenergy, biofuel, and biogas production. Both the global energy demand and the complexity of the energetic mix will increase by 2050. Renewable and clean energy sources must be developed to achieve carbon neutrality, aiming toward a sustainable future. In this context, biomass is the best option for creating biofuels that meet alternative fuel requirements. This Special Issue aims to collect high-quality research articles and review articles reflecting the latest progress in the research of bioenergy. We propose to analyze the global concerns about bioenergy, biofuel, and biogas production, considering how sustainable and economic growth may be pursued while ensuring low environmental effects. We invite relevant experts in the above topics and colleagues to contribute papers reflecting these aspects.

Topics of interest for publication include, but are not limited to, the following:

  • Recent developments in bioenergy with carbon capture and storage (BECCS) deployment;
  • Optimization of biodiesel production;
  • Biofuel sustainability;
  • Economic viability of biofuel production;
  • Biodiesel separation and purification;
  • Generation of heat and power from biofuels;
  • Biogas upgrading technologies;
  • Energy storage and management system.

Prof. Dr. David Bessières
Guest Editor

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 250 words) can be sent to the Editorial Office for assessment.

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

  • wastewater treatment
  • biodiesel
  • biohydrogen
  • anaerobic digestion
  • biochar
  • biogas upgrading

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

19 pages, 58392 KB  
Article
Amaranth as a Biogas Crop: Agronomic Performance and Methane Potential from a Field Evaluation in Southwest Germany
by Moritz von Cossel, Kathrin Klasen, Joana Iwaniw, Iris Lewandowski and Andrea Bauerle
Energies 2026, 19(9), 2087; https://doi.org/10.3390/en19092087 - 25 Apr 2026
Viewed by 209
Abstract
While silage maize (Zea mays L.) remains the dominant biogas feedstock crop in Germany, concerns about landscape homogenization and ecological risks have stimulated the search for more diverse energy crops. This study evaluated twelve amaranth genotypes (GT01–12; Amaranthus spp.) in southwest Germany [...] Read more.
While silage maize (Zea mays L.) remains the dominant biogas feedstock crop in Germany, concerns about landscape homogenization and ecological risks have stimulated the search for more diverse energy crops. This study evaluated twelve amaranth genotypes (GT01–12; Amaranthus spp.) in southwest Germany using field experiments combined with biomass composition analysis and laboratory batch biogas assays. In contrast to earlier studies focusing primarily on the cultivar ‘Baernkraft’ (GT04), a broader set of genetic material was examined. Significant differences among GTs were observed for plant density, dry matter yield (DMY), dry matter content (DMC), and biomass composition. The most productive genotypes (GT09 and GT11) exceeded 10 Mg ha−1 DMY, clearly outperforming Baernkraft. However, even these GTs did not reach the ≈28% DMC threshold considered necessary for reliable ensiling. Lignin concentrations ranged from 4.7% to 7.2% of dry matter. Methane concentrations remained relatively stable (54–55%), resulting in an average methane yield of 1788 ± 441 m3 CH4 ha−1 (maximum: 2677.8 m3 CH4 ha−1) across all genotypes and harvest dates. These findings indicate that amaranth may contribute to diversification of biogas cropping systems, although its agronomic and substrate-related performance remains inferior to that of maize under the conditions studied. Full article
(This article belongs to the Special Issue Optimized Production of Bioenergy, Biofuels, and Biogas)
Show Figures

Figure 1

16 pages, 1036 KB  
Article
Waste to Energy: Anaerobic Co-Digestion of Microalgal Biomass and Bakery Waste
by Małgorzata Hawrot-Paw and Jacek Tapczewski
Energies 2025, 18(20), 5516; https://doi.org/10.3390/en18205516 - 20 Oct 2025
Cited by 2 | Viewed by 1376
Abstract
Anaerobic digestion is a well-known technology for renewable energy generation. Its efficiency depends on the substrate composition and its biodegradability. Microalgae are considered a promising feedstock due to their rapid growth, high protein and lipid content, and potential for wastewater treatment. However, the [...] Read more.
Anaerobic digestion is a well-known technology for renewable energy generation. Its efficiency depends on the substrate composition and its biodegradability. Microalgae are considered a promising feedstock due to their rapid growth, high protein and lipid content, and potential for wastewater treatment. However, the mono-digestion is often limited by a low carbon-to-nitrogen (C/N) ratio and a recalcitrant cell wall structure. This study evaluated the potential of co-digesting microalgal biomass with bakery waste under batch conditions. Two types of bakery residues (stale wheat bread and stale wheat rolls), were tested. Each was added to the microalgal biomass at proportions of 25%, 50%, and 75% based on volatile solids (VS). The experiment was carried out in a semi-technical anaerobic digester under mesophilic conditions. During the anaerobic digestion, the biogas volume, gas composition, and the energy potential of the substrates were analysed. The highest biogas yield (494.34 L·kg−1 VS) was obtained from the mixture of microalgae and 75% bread. Although mono-digestion of microalgal biomass resulted in the highest methane concentration, the differences compared to co-digested samples were not significant. The lowest hydrogen sulphide concentration (234.20 ppm) was measured in the 25% rolls variant, while the control sample (100% microalgae) showed the highest H2S levels. From an energy perspective, the most beneficial result was obtained with the addition of 75% bread. Full article
(This article belongs to the Special Issue Optimized Production of Bioenergy, Biofuels, and Biogas)
Show Figures

Figure 1

Back to TopTop