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Renewable Biodiesel/Green Diesel for a Sustainable Future
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Renewable Biodiesel/Green Diesel for a Sustainable Future

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: closed (10 August 2024) | Viewed by 25913

Special Issue Editor

Dr. Kumarasamy Sudhakar

E-Mail Website
Guest Editor
Faculty of Mechanical and Automotive Engineering Technology / Fluid center & Automotive Engineering Center, Universiti Malaysia Pahang, Pekan 26600, Malaysia
Interests: sustainable development; carbon capture and sequestration; bioeconomy; solar systems; energy modelling; feasibility and performance evaluation of clean energy projects; sustainability of energy systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Focus: Renewable biofuels and green diesel are considered as an alternative to replace conventional fuels such as coal, oil, and natural gas. Thus, due to the several merits of biofuel for a cleaner and sustainable environment, it is expected to play a crucial role in the future fuel mix of various nations. The concept of biorefinery integrates the conversion of biomass, residues, and waste into renewable fuels, which has been an industrial activity all around the world. The development of economically viable conversion processes with fewer environmental impacts is a key area of the circular economy and green fuel technologies.

Scope: The various solutions to the global shortage of fossil carbon supply and the various technical, economic, social, policy, and political factors influencing renewable fuels will be discussed in this Special Issue. The final objective is to present a roadmap and pathways for the transition to a greener economy with the sustainable production and consumption of renewable fuel, in a broad set of countries/regions.

Purpose: This Special Issue will provide multidisciplinary, comprehensive, and state-of-the-art research on renewable biodiesel and green diesel which includes the selection of suitable biomass feedstocks into sustainable biofuels. Together, contributions will provide insights into research advances in biofuel research, potential feedstock, and engine applications. Authors are encouraged to supplement their results by considering the relevant issues of environmental, economic, sustainability, social, and policy aspects in stimulating green and renewable diesel production and utilization.

Dr. Kumarasamy Sudhakar
Guest Editor

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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. Sustainability 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 2400 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

  • renewable biodiesel
  • green diesel
  • recent biofuel generation
  • nanoadditives in biofuel
  • green fuel performance in engines
  • sustainable biofuel production
  • biofuel transition and circular economy
  • environmental impact and life cycle assessment of green fuels

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Published Papers (3 papers)

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Research

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13 pages, 1532 KiB  
Article
Effect of Inoculum Concentration on the Degradation of Diesel 2 by a Microbial Consortium
by Nélida Milly Otiniano, Walter Rojas-Villacorta, Magaly De La Cruz-Noriega, Carmen Lora-Cahuas, Karol Mendoza-Villanueva, Santiago M. Benites, Moises Gallozzo-Cardenas and Segundo Rojas-Flores
Sustainability 2022, 14(24), 16750; https://doi.org/10.3390/su142416750 - 14 Dec 2022
Cited by 2 | Viewed by 2636
Abstract
The objective was to determine the effect of inoculum concentration on the degradation of Diesel 2 by a microbial consortium called BIOT.PD001. For this, five systems were designed (in triplicate), which Contained Davis Minimum Medium, 5% Diesel 2 as a carbon source, and [...] Read more.
The objective was to determine the effect of inoculum concentration on the degradation of Diesel 2 by a microbial consortium called BIOT.PD001. For this, five systems were designed (in triplicate), which Contained Davis Minimum Medium, 5% Diesel 2 as a carbon source, and a suspension of the microbial consortium BIOT.PD001 (9 × 108 cells/mL) in concentrations of 2, 4, 6, 8, and 10% of the final volume. The monitoring of the degradation of Diesel 2 was carried out indirectly through the bacterial counts by the plate count method, the Biochemical Oxygen Demand (BOD5) by the Winkler Method modified according to Alsterberg, and the concentration of total fats by Gerber’s method. The retention time was 15 days. It was observed that the percentage of efficiency of the process increases as the concentration of inoculum increases, obtaining the highest percentage of efficiency (94.77%) when using 10% of inoculum (v/v), while when using inoculum concentrations of 2 and 4% (v/v), the efficiency percentages are the lowest, (68.4 and 66.6%, respectively). On the other hand, the variance analysis indicated that there is a significant difference between the averages of these values. The regression analysis indicated that the inoculum concentration significantly affects the efficiency of Diesel 2 degradation and that this is 86% explained by a linear regression model. There is a linear relationship between the inoculum concentration of the BIOT.PD001 microbial consortium and the BOD5 tend to decrease as a function of time. It is concluded that the inoculum concentration significantly affects the efficiency of the degradation of Diesel 2 by the BIOT.PD001 consortium. Full article
(This article belongs to the Special Issue Renewable Biodiesel/Green Diesel for a Sustainable Future)
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19 pages, 19914 KiB  
Article
Influence of Combustion Chamber Shapes and Nozzle Geometry on Performance, Emission, and Combustion Characteristics of CRDI Engine Powered with Biodiesel Blends
by K. M. V. Ravi Teja, P. Issac Prasad, K. Vijaya Kumar Reddy, N. R. Banapurmath, Manzoore Elahi M. Soudagar, T. M. Yunus Khan and Irfan Anjum Badruddin
Sustainability 2021, 13(17), 9613; https://doi.org/10.3390/su13179613 - 26 Aug 2021
Cited by 7 | Viewed by 2516
Abstract
Environmentally friendly, renewable, and green fuels have many benefits over fossil fuels, particularly regarding energy efficiency, in addition to addressing environmental and socioeconomic problems. As a result, green fuels can be used in transportation and power generating applications. Furthermore, being green can ably [...] Read more.
Environmentally friendly, renewable, and green fuels have many benefits over fossil fuels, particularly regarding energy efficiency, in addition to addressing environmental and socioeconomic problems. As a result, green fuels can be used in transportation and power generating applications. Furthermore, being green can ably address the emission-related issues of global warming. In view of the advantages of renewable fuels, two B20 fuel blends obtained from methyl esters of cashew nutshell (CHNOB), jackfruit seed (JACKFSNOB), and jamun seed oils (JAMSOB) were selected to evaluate the performance of a common rail direct injection (CRDI) engine. Compatibility of the nozzle geometry (NG) and combustion chamber shape (CCS) were optimized for increased engine performance. The optimized CCS matched with an increased number of injector nozzle holes in NG showed reasonably improved brake thermal efficiency (BTE), reduced emissions of smoke, HC, and CO, respectively, while NOx increased. Further combustion parameters, such as ignition delay (ID) and combustion duration (CD) reduced, while peak pressure (PP) and heat release rates (HRR) increased at the optimized injection parameters. The CRDI engine powered with JAMSOB B20 showed an increase in BTE of 4–5%, while a significant reduction in HC and CO emissions was obtained compared to JACKFSNOB B20 and CHNOB B20, with increased NOx. Full article
(This article belongs to the Special Issue Renewable Biodiesel/Green Diesel for a Sustainable Future)
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Review

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30 pages, 5376 KiB  
Review
Role of Biofuels in Energy Transition, Green Economy and Carbon Neutrality
by Nida Khan, Kumarasamy Sudhakar and Rizalman Mamat
Sustainability 2021, 13(22), 12374; https://doi.org/10.3390/su132212374 - 9 Nov 2021
Cited by 68 | Viewed by 18952
Abstract
Modern civilization is heavily reliant on petroleum-based fuels to meet the energy demand of the transportation sector. However, burning fossil fuels in engines emits greenhouse gas emissions that harm the environment. Biofuels are commonly regarded as an alternative for sustainable transportation and economic [...] Read more.
Modern civilization is heavily reliant on petroleum-based fuels to meet the energy demand of the transportation sector. However, burning fossil fuels in engines emits greenhouse gas emissions that harm the environment. Biofuels are commonly regarded as an alternative for sustainable transportation and economic development. Algal-based fuels, solar fuels, e-fuels, and CO2-to-fuels are marketed as next-generation sources that address the shortcomings of first-generation and second-generation biofuels. This article investigates the benefits, limitations, and trends in different generations of biofuels through a review of the literature. The study also addresses the newer generation of biofuels highlighting the social, economic, and environmental aspects, providing the reader with information on long-term sustainability. The use of nanoparticles in the commercialization of biofuel is also highlighted. Finally, the paper discusses the recent advancements that potentially enable a sustainable energy transition, green economy, and carbon neutrality in the biofuel sector. Full article
(This article belongs to the Special Issue Renewable Biodiesel/Green Diesel for a Sustainable Future)
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