Energy Crops for Biofuel Production

A special issue of Fuels (ISSN 2673-3994).

Deadline for manuscript submissions: closed (15 February 2024) | Viewed by 3641

Special Issue Editor

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Guest Editor
Department of Agricultural Technology, Storage and Transport, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, Croatia
Interests: renewable energy sources; biomass conversion; biofuels
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Special Issue Information

Dear Colleagues,

Energy is one of the most important indicators of economic and social development. With a reduction in the use of conventional fossil fuels in mind, there is an aspiration for a safer, more sustainable, and more continuous energy supply, as well as future low carbon scenarios, it is expected that an increase in the production and consumption of RES will be even more present on a global level in the upcoming years. Moreover, decarbonizing transport will require a range of bio-based transport fuels, and especially advanced low carbon fuels which are suitable for long-haul transport applications including aviation. Therefore, it is expected that biomass will have the greatest contribution to achieving growth in the biofuel production sector, by introducing energy crops into the supply chain itself. Low requirements for fertilization and minimum application of herbicides makes energy crops environmentally friendly, but can also ensure the sustainability of the biomass supply, while using marginal lands for their growth. This makes both fuel output and climate benefits per unit of land important parameters, and, as such, life-cycle assessment is used to identify the aspects of the most important environmental impacts.

Therefore, authors are invited to contribute work related to the potential topics of this Special Issue, which include, but are not limited to, growing novel energy crops for biofuel production, analysis of biomass quality, biogas/ethanol production development processes, and advanced biofuels' production.

Dr. Vanja Jurišić
Guest Editor

Manuscript Submission Information

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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. Fuels is an international peer-reviewed open access quarterly 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 1000 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.


  • biofuels
  • lignocellulosic biomass
  • annual energy crops
  • perennial energy crops
  • marginal lands
  • biochemical conversion
  • thermochemical conversion
  • ethanol
  • biogas
  • transport fuels
  • advanced biofuels
  • LCA

Published Papers (1 paper)

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19 pages, 2978 KiB  
Ultrasonication Assisted Catalytic Transesterification of Ceiba Pentandra (Kapok) Oil Derived Biodiesel Using Immobilized Iron Nanoparticles
by Mithileth Pasawan, Shiao-Shing Chen, Bhanupriya Das, Hau-Ming Chang, Chang-Tang Chang, Thi Xuan Quynh Nguyen, Hong-Ming Ku and Yue-Fang Chen
Fuels 2022, 3(1), 113-131; - 22 Feb 2022
Cited by 7 | Viewed by 2563
The embedded immobilized enzymes (Rhizopus-oryzae) on the magnetic nanoparticles (Fe3O4-NPs) is a new application for the sustainable production of high-quality biodiesel. In this study, biodiesel is derived from Kapok oil via ultrasonication (US)-assisted catalytic transesterification method. A [...] Read more.
The embedded immobilized enzymes (Rhizopus-oryzae) on the magnetic nanoparticles (Fe3O4-NPs) is a new application for the sustainable production of high-quality biodiesel. In this study, biodiesel is derived from Kapok oil via ultrasonication (US)-assisted catalytic transesterification method. A novel attempt is made to prepare magnetic nanoparticles embedded by an immobilized enzyme to solve the problem of enzyme denaturation. This innovative method resulted in optimum biodiesel conversion of 89 ± 1.17% under reactant molar ratio (methanol: oil) of 6:1, catalyst loading 10 wt% with a reaction time of 4 h at 60 °C. The kinetic and thermal study reveals that conversion of Kapok oil to biodiesel follows a pseudo first-order reaction kinetic with a lower ΔE of 30.79 kJ mol−1. The ΔH was found to be 28.06 kJ mol−1 with a corresponding ΔS of −237.12 J mol−1 K−1 for Fatty Acid Methyl Ester formation. The ΔG was calculated to be from 102.28 to 109.40 kJ mol−1 for temperature from 313 K to 343 K. The positive value of ΔH and ΔG is an indication of endothermic and non-spontaneous reaction. A negative ΔS indicates the reactant in the transition state possesses a higher degree of ordered geometry than in its ground state. The immobilized catalysts provided great advantages towards product separation and efficient biodiesel production. Highlights: 1. Effective catalytic transesterification assisted by the ultrasonication method was used for bi-odiesel production. 2. Magnetite nanoparticles synthesized by the co-precipitation method were used as heteroge-neous catalysts. 3. An immobilized enzyme (Rhizopus-oryzae) was embedded in the heterogeneous catalyst, as it is reusable and cost-effective. 4. The maximum biodiesel yield obtained from Kapok oil was 93 ± 1.04% by catalytic trans-esterification reactions. Full article
(This article belongs to the Special Issue Energy Crops for Biofuel Production)
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