Symmetry/Asymmetry in Sustainable Processes: Waste Valorization and Green Engineering Approaches

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Chemistry: Symmetry/Asymmetry".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 209

Special Issue Editors


E-Mail Website
Guest Editor
Department of Chemical, Energy and Mechanical Technology, ESCET, Rey Juan Carlos University, Móstoles, 28933 Madrid, Spain
Interests: water treatment; waste valorisation; adsorption; advanced oxidation processes; carbonaceous materials; extraction

E-Mail Website
Guest Editor
Instituto de Tecnologías para la Sostenibilidad, Universidad Rey Juan Carlos, 28933 Mostoles, Spain
Interests: chemical engineering; environmental science; energy; chemistry materials; science engineering; biochemistry; genetics and molecular biology; immunology and microbiology; agricultural and biological sciences
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Chemical, Energy and Mechanical Technology, ESCET, Universidad Rey Juan Carlos, Móstoles, 28933 Madrid, Spain
Interests: microalgae; microalgae technologies; biofuels; bioprocess engineering; biotechnology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue of Symmetry explores developments in sustainable and eco-friendly processes, with a focus on waste treatment and valorisation.

Currently, it is crucial to develop innovative strategies that optimise waste utilisation and minimise environmental impact. Thus, this Special Issue highlights contributions that offer efficient and scalable solutions for sustainable resource management to foster a greener industry and a circular economy.

This Special Issue, titled “Symmetry/Asymmetry in Sustainable Processes: Waste Valorization and Green Engineering Approaches”, welcomes original research and review articles on emerging technologies for waste treatment and/or waste conversion into high-value-added products, including catalytic and separation processes, with an emphasis on symmetry and asymmetry issues. Topics relating to symmetry-related problems include, but are not limited to, the following:

  • Asymmetric catalysis in the treatment and valorization of waste and evaluation of the reaction pathway, selectivity, or yield in terms of the structural symmetry of the reactants and/or products.
  • Synthesis and characterisation of chiral catalysts used to obtain high added-value products from waste.
  • Selective separation of enantiomers found in waste, evaluating the influence of chirality in the process.
  • Characterisation of wastes, high value-added products, or other solid materials involved in the catalysis or separation process through the application of techniques such as X-ray diffraction, which provides insights regarding the symmetry/asymmetry issues of the structure.

Dr. Pablo Gutiérrez-Sánchez
Prof. Dr. Luis Fernando Bautista
Prof. Dr. Gemma Vicente
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 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. Symmetry is an international peer-reviewed open access monthly 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

  • waste valorization
  • circular economy
  • catalysis separation processes
  • catalyst/sorbent characterisation
  • green engineering
  • symmetry/asymmetry
  • X-ray structures

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 (1 paper)

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

Review

24 pages, 1889 KB  
Review
Symmetry and Asymmetry in Biogenic Carbonaceous Materials: A Framework for Sustainable Waste Valorization
by Pablo Gutiérrez-Sánchez, Gemma Vicente and Luis Fernando Bautista
Symmetry 2026, 18(1), 42; https://doi.org/10.3390/sym18010042 (registering DOI) - 25 Dec 2025
Abstract
The increasing generation of biomass-derived waste has accelerated the development of sustainable strategies for its valorization into functional materials. Activated carbon (AC), due to its high surface area, tunable porosity, and chemical versatility, has emerged as a key product for applications in adsorption, [...] Read more.
The increasing generation of biomass-derived waste has accelerated the development of sustainable strategies for its valorization into functional materials. Activated carbon (AC), due to its high surface area, tunable porosity, and chemical versatility, has emerged as a key product for applications in adsorption, catalysis, energy storage, and biosensing, among others. Recent studies have highlighted the importance of symmetry and asymmetry in determining the structural and functional performance of AC. Symmetric architectures, typically generated via templating methods, yield ordered pore networks, whereas asymmetric structures, commonly produced through direct chemical activation or heteroatom doping, exhibit hierarchical porosity and heterogeneous surface functionalities. This work critically examines the fundamentals of symmetry and asymmetry in AC materials, as well as their influence on design and use. It discusses synthesis strategies, characterization techniques, and recent approaches that enable the rational engineering of carbon structures. Application-specific case studies are presented, along with current challenges related to feedstock variability, scalability, and regulatory integration. By highlighting the interplay between structural order and functional diversity, this work provides a conceptual framework for guiding future research in the development on symmetrical and asymmetrical carbonaceous materials for sustainable waste valorization. Full article
Show Figures

Figure 1

Back to TopTop