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Advances in Biomass Valorization: Waste to Industrial Application

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: 20 January 2027 | Viewed by 720

Editor

Special Issue Information

Dear Colleagues,

With the current energy and environmental scenario, the role of biomass valorization is becoming more and more important, facing multiple challenges like the improvement in sustainable practices, efficiency and yield, the adjustment to circular economy and different regulations, etc. The aim of this Special Issue is precisely to bring up new advances in recent research to overcome these issues, especially focused on specific cases where new technologies can be used at different industrial levels. For this purpose, works related to waste management and its subsequent valorization are welcome, including improvements in yield and efficiency of these processes to compete with traditional refineries. Also, the promotion of key stages that could adjust to the biorefinery concept would be interesting works for this SI. Finally, and considering the philosophy of this journal, practical considerations, especially for the implementation at industrial scale, are desirable in this collection of works.

Dr. Sergio Nogales Delgado
Guest Editor

Manuscript Submission Information

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Keywords

  • waste management
  • agricultural waste
  • industrial waste
  • sustainable processing
  • efficiency
  • biorefinery

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Published Papers (1 paper)

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Research

24 pages, 3350 KB  
Article
Multivariate Insights into Structure–Property Relationships in Biodiesel and Biolubricants from Vegetable Oils
by Sergio Nogales-Delgado
Appl. Sci. 2026, 16(12), 6049; https://doi.org/10.3390/app16126049 - 15 Jun 2026
Viewed by 274
Abstract
The transition to bio-based fuels requires a thorough understanding of how molecular structure governs key physicochemical properties such as oxidation stability and viscosity. In this study, the combined influence of fatty acid composition and alcohol structure on biodiesel and biolubricant performance is investigated [...] Read more.
The transition to bio-based fuels requires a thorough understanding of how molecular structure governs key physicochemical properties such as oxidation stability and viscosity. In this study, the combined influence of fatty acid composition and alcohol structure on biodiesel and biolubricant performance is investigated using a multivariate statistical approach. A dataset comprising 108 samples was analyzed, including 17 experimental samples produced in this work and 91 samples collected from peer-reviewed literature. Each sample was characterized by its fatty acid composition and at least one physicochemical property, namely oxidation stability (Rancimat induction time) and/or kinematic viscosity. Principal Component Analysis (PCA) was applied to identify dominant compositional patterns, followed by clustering (k-means) to define homogeneous compositional regions. Within these regions, a variance decomposition approach was used to quantify the relative contribution of alcohol type to property variability. The results show that fatty acid composition defines the primary structural framework governing oxidative stability, largely driven by the degree of unsaturation. In contrast, viscosity is more strongly influenced by the type of alcohol used, particularly in systems involving higher alcohols or polyols. The proposed approach provides a structured multivariate framework focused on analyzing oxidation stability and viscosity, enabling the systematic interpretation of the relative influence of fatty acid composition and alcohol structure on these key physicochemical properties. This study demonstrates that integrating PCA, clustering, and variance decomposition offers a robust strategy for analyzing complex bio-based systems, supporting the rational selection of feedstocks and processing conditions for the optimization of biodiesel and biolubricant formulations. Full article
(This article belongs to the Special Issue Advances in Biomass Valorization: Waste to Industrial Application)
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