Special Issue "Environmental Aspects and Impacts of Hydrogen Technologies"

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

Deadline for manuscript submissions: 25 August 2021.

Special Issue Editors

Dr. Viviana Cigolotti
E-Mail Website
Guest Editor
Laboratory for Energy Storage, Batteries and Hydrogen Production and Utilization Technologies, Department of Energy Technologies and Renewable Sources, ENEA—Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Research Centre of Portici, Naples, Italy
Interests: hydrogen production; ammonia; fuel cells; hybrid energy systems
Dr. Angelo Basile
E-Mail Website
Guest Editor
Laboratory of Inorganic Membrane Reactors for Pure Hydrogen Production, Institute of Membrane Technology (ITM) of the Italian National Research Council (CNR), Cubo 17/C 87036 Rende CS, Italy
Interests: membrane; membrane reactors; hydrogen production; CO2 capture and use
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Special Issue Information

Dear Colleagues,

It is our pleasure to invite you to participate to the Special Issue “Environmental Aspects and Impacts of Hydrogen Technologies”. There is a revolution taking place in the energy sector, where hydrogen is now considered a pivotal clean energy carrier for the future, playing a key role in enabling this energy transition. The current post-pandemic policies tend to foster the much-needed energy transition towards an economic development decoupled from fossil fuels. A future hydrogen-based economy will require H2 production through different technological pathways, using a wide range of feedstocks and energy sources. Besides production, along the entire supply chain hydrogen needs to be stored, distributed, and finally used.

The main goal of this Special Issue is to deepen the understanding of the potential economic, social and environmental impacts of the most recent advancements in the field of hydrogen technologies and their applications, involving hydrogen production, storage, distribution, and final usage.

Articles including recent analyses on the social, environmental and economic aspects of novel and emerging technologies, and future trends in the field of sustainable hydrogen production, storage, and utilization as an energy resource, are highly encouraged. The submission of articles reporting specific applications and case studies, which demonstrate or analyze the sustainability of hydrogen technologies, will be much appreciated. The analysis of specific case studies may focus on different stages or the entire H2 supply chain.

We look forward to considering your submissions.

Dr. Viviana Cigolotti
Dr. Angelo Basile
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 papers will be 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 2000 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.


  • LCA, LCC
  • Social life cycle assessment
  • Hydrogen production technologies
  • Hydrogen storage
  • Hydrogen distribution
  • Fuel cell
  • Hydrogen valley

Published Papers (1 paper)

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Investigating the Effects of Ultrasonic Frequency and Membrane Technology on Biodiesel Production from Chicken Waste
Energies 2021, 14(8), 2133; https://doi.org/10.3390/en14082133 - 11 Apr 2021
Cited by 1 | Viewed by 398
In this study, the experiments were carried out under different operating conditions to evaluate the effect of ultrasound waves on biodiesel production from chicken feet oil. A two-step esterification–transesterification mechanism was employed to improve the biodiesel quality. The continuous (methanol-to-oil molar ratio and [...] Read more.
In this study, the experiments were carried out under different operating conditions to evaluate the effect of ultrasound waves on biodiesel production from chicken feet oil. A two-step esterification–transesterification mechanism was employed to improve the biodiesel quality. The continuous (methanol-to-oil molar ratio and KOH catalyst amount) and discrete (frequencies, 25 and 45 kHz) variables were investigated using the experimental design method. The five-level three-factor response surface method (RSM) was assisted to optimize the biodiesel synthesis variables. Applying RSM based on the central composite design (CCD), a polynomial equation was fitted to the experimental data with the aid of Design-Expert software. The model accuracy was checked by analysis of variance (ANOVA). The results showed the highest yield of 89.74% could be achieved by using an M/O molar ratio of 12, a KOH concentration of 1 wt%, and an ultrasound frequency of 45 kHz. Finally, a mathematical model of biodiesel production in a membrane system was developed. The reaction rate constant was calculated as a function of ultrasonic frequency. Compared with the conventional method, the membrane system has significantly improved chicken feet biodiesel production’s reaction rate. The membrane is more effective at higher frequencies than at lower ones. Full article
(This article belongs to the Special Issue Environmental Aspects and Impacts of Hydrogen Technologies)
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