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Recent Technologies and Applications of Algal Biomass

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 September 2026 | Viewed by 1068

Special Issue Editors


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Guest Editor
LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical and Biological Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
Interests: carbon sequestration; wastewater treatment; biogas production; process modelling and simulation; sustainability assessment
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical and Biological Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
Interests: biomass valorisation; process intensification; harvesting technologies; downstream processing; life cycle assessment (LCA)
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Algal biomass, including both microalgae and macroalgae, has emerged as a promising and versatile resource for advancing sustainable technologies and supporting the transition toward a circular bioeconomy. In recent years, significant progress has been made in cultivation systems, process intensification, downstream processing, and environmental applications, enabling more efficient and economically viable algal-based solutions.

This Special Issue aims to highlight recent technological developments and innovative applications related to the production, processing, and valorisation of algal biomass. Contributions addressing both fundamental and applied research are welcome, particularly those focusing on novel cultivation strategies (e.g., photobioreactors, open ponds, and hybrid systems), process optimisation, harvesting and extraction technologies, and integrated biorefinery approaches.

A central theme of this collection is the environmental potential of algae. We strongly encourage submissions exploring CO₂ capture and utilisation, wastewater treatment and nutrient recovery, bioenergy production (e.g., biogas, biohydrogen, and biodiesel), and resource recovery within circular economy frameworks. Studies addressing techno-economic assessment, life cycle analysis, modelling, scale-up strategies, and process sustainability are also of particular interest.

By gathering contributions from researchers and practitioners worldwide, we seek to provide a comprehensive overview of state-of-the-art technologies and identify future directions for the sustainable deployment of algal biomass across multiple sectors.

Dr. José Carlos Magalhães Pires
Dr. Ana Filipa Cruz Esteves
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. Applied Sciences 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

  • microalgae
  • macroalgae
  • photobioreactors
  • CO2 capture
  • nutrient recovery
  • bioenergy
  • algal biorefinery
  • process intensification
  • downstream processing
  • circular bioeconomy
  • sustainability assessment

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Published Papers (1 paper)

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Research

34 pages, 10674 KB  
Article
Unraveling the Biotechnological Potential of Red Seaweed (Rhodophyta, Florideophyceae) in Culture
by Marta V. Freitas, Clélia Afonso, Leonel Pereira and Teresa Mouga
Appl. Sci. 2026, 16(10), 5141; https://doi.org/10.3390/app16105141 - 21 May 2026
Viewed by 807
Abstract
The global demand for sustainable protein sources has led to increased interest in macroalgae, particularly red seaweed, due to their rich nutritional content and bioactive compounds, which translates into a wide range of biotechnological applications. This study compares the biochemical profiles, specifically pigments [...] Read more.
The global demand for sustainable protein sources has led to increased interest in macroalgae, particularly red seaweed, due to their rich nutritional content and bioactive compounds, which translates into a wide range of biotechnological applications. This study compares the biochemical profiles, specifically pigments and proteins, as well as antioxidant activity, of four red seaweed species, namely Nitophyllum punctatum, Chondria coerulescens, Plocamium cartilagineum and Sphaerococcus coronopifolius. The aim was to compare wild and cultivated biomasses to identify optimal cultivation strategies for maximizing their value. The results show that culture conditions have a significant impact on pigment and protein content, as well as antioxidant potential, for all species. While all cultured species showed increased protein content, specific responses in pigment production and antioxidant activity were clearly species-dependent. These results highlight the specific culture conditions required to produce pigments or antioxidant activities on a species-by-species basis. As these four red seaweed species remain relatively underexplored, further targeted research is required to refine cultivation methods and enhance our understanding of their biotechnological value. Full article
(This article belongs to the Special Issue Recent Technologies and Applications of Algal Biomass)
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