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Sustainable Strategies to Overcome Bottlenecks in the Microalgal Process Chain

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Engineering and Science".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 2698

Special Issue Editor

James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
Interests: microalgal growth; dewatering; extraction; thermochemical processing

Special Issue Information

Dear Colleagues,

Microalgae offer the potential to produce high-value products and biofuel, sequester CO2, and even treat wastewater, yet there remain significant bottlenecks that are preventing large-scale commercialization and realization of this vision. The current special topic will focus on novel approaches to overcome these bottlenecks that may enable scaling and deployment of microalgal systems at scale, with real opportunities to impact this challenging research area.

Articles may include but are not restricted to research on novel growth strategies to increase biomass growth and yield, inexpensive dewatering technologies or more efficient processes that reduce the cost of this step, and high-value product extraction through to possibilities for viable biofuel production and improvements in processing through synthetic engineering advances. 

This Special Issue aims to bring together the latest global research that specifically addresses these fundamental stumbling blocks, allowing to share of the best practice and identify profitable research routes that should be explored more generally, bringing the research community together.

Dr. Ian Watson
Guest Editor

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 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. 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

  • microalgae
  • added value
  • downstream optimisation
  • process analysis
  • case studies
  • higher-value products
  • novel technology

Published Papers (1 paper)

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Review

24 pages, 14570 KiB  
Review
Assuaging Microalgal Harvesting Woes via Attached Growth: A Critical Review to Produce Sustainable Microalgal Feedstock
by Nurulfarah Adilah Rosmahadi, Wai-Hong Leong, Hemamalini Rawindran, Yeek-Chia Ho, Mardawani Mohamad, Noraini A. Ghani, Mohammed J. K. Bashir, Anwar Usman, Man-Kee Lam and Jun-Wei Lim
Sustainability 2021, 13(20), 11159; https://0-doi-org.brum.beds.ac.uk/10.3390/su132011159 - 09 Oct 2021
Cited by 20 | Viewed by 2364
Abstract
Third-generation biofuels that are derived from microalgal biomass have gained momentum as a way forward in the sustainable production of biodiesel. Such efforts are propelled by the intention to reduce our dependence on fossil fuels as the primary source of energy. Accordingly, growing [...] Read more.
Third-generation biofuels that are derived from microalgal biomass have gained momentum as a way forward in the sustainable production of biodiesel. Such efforts are propelled by the intention to reduce our dependence on fossil fuels as the primary source of energy. Accordingly, growing microalgal biomass in the form of suspended cultivation has been a conventional technique for the past few decades. To overcome the inevitable harvesting shortcomings arising from the excessive energy and time needed to separate the planktonic microalgal cells from water medium, researchers have started to explore attached microalgal cultivation systems. This cultivation mode permits the ease of harvesting mature microalgal biomass, circumventing the need to employ complex harvesting techniques to single out the cells, and is economically attractive. However, the main bottleneck associated with attached microalgal growth is low biomass production due to the difficulties the microalgal cells have in forming attachment and populating thereafter. In this regard, the current review encompasses the novel techniques adopted to promote attached microalgal growth. The physicochemical effects such as the pH of the culture medium, hydrophobicity, as well as the substratum surface properties and abiotic factors that can determine the fate of exponential growth of attached microalgal cells, are critically reviewed. This review aims to unveil the benefits of an attached microalgal cultivation system as a promising harvesting technique to produce sustainable biodiesel for lasting applications. Full article
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