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Biotechnology for Waste Treatment and Resource Recovery

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

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 3353

Special Issue Editors


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Guest Editor
Green Chemistry Centre of Excellence, Department of Chemistry, University of York, York YO10 5DD, UK
Interests: green chemistry; food waste; waste valorisation
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Design, University of Leeds, Leeds, UK
Interests: sustainable materials and renewable fibres; waste processing; microwave-assisted extraction; protein extraction

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Guest Editor
IBG-1: Biocatalysis, Forschungszentrum Jülich, 52428 Jülich, Germany
Interests: biorenewable resources; biomass valorisation; SDGs; biocatalysis

Special Issue Information

Dear Colleagues,

For nearly a century, crude oil has been the core feedstock for our society, representing the prime source of chemicals for fuels, solvents, polymers, dyes, adhesives, coatings, LCDs and many more. However, as the population grows, so too does the demand for these products—to the point where it is clear that the demand for oil far outstrips the rate at which its reserves can be replenished. At the same time, as the production of materials and products increases, so too does the generation of waste side-streams and by-products which, combined with the standard practice of disposal of products at the end of life, creates a similar problem in terms of demand for landfill space and environmental issues associated with other disposal means (e.g., incineration).

The achievement of a society and economy which are sustainable in the long term requires a model that make use of and recovers waste streams and products generated through the supply chain, as opposed to finding ways to dispose of this waste safely in order to reduce the demand for both resources and disposal routes. Similarly, we must also look away from crude oil and towards the bio-based economy to supply us with the methods and chemicals needed to recover and convert waste streams into useful products. The purpose of this Special Issue therefore is to bring these two challenges together to examine how biotechnology can provide solutions for the problems of waste management, particularly with respect to resource recovery or the transformation of waste streams into useful chemicals, materials and products.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Use of biological agents (enzymes, bacteria, plants etc.) to process or carry out chemical conversions on waste streams;
  • Conversion of waste biomass to chemicals and materials;
  • Improvements of fermentation or anaerobic digestion techniques;
  • Development of new enzymes or bacterial strains to produce novel metabolites for use in the chemical industry;
  • Recycling of biomass;
  • Emerging biotechnologies for waste treatment and resource technologies;
  • Routes to scale up, process development or commercialisation of research in the above fields.

If you are unable to commit to writing at this time, please feel free to pass this on to others in your group or network who may be interested.

I look forward to receiving your contributions.

Dr. Tom Dugmore
Dr. Joseph Houghton
Dr. Eduardo Macedo De Melo
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 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

  • biotechnology
  • bioeconomy
  • biobased materials
  • waste valorisation
  • waste treatment
  • circular economy
  • environmental remediation
  • resource recovery

Published Papers (2 papers)

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Research

9 pages, 580 KiB  
Article
Production of Bioferments from Artichoke and Asparagus Waste with High Unicellular Protein and Carotenoid Content Using R. mucilaginosa
by Magaly De La Cruz-Noriega, Santiago M. Benites, Segundo Rojas-Flores, Claudio Quiñones-Cerna, Nicole Terrones Rodríguez, Heber Robles-Castillo, Johnny Huanes-Carranza and Karol Mendoza-Villanueva
Sustainability 2023, 15(20), 15102; https://doi.org/10.3390/su152015102 - 20 Oct 2023
Viewed by 992
Abstract
Microorganisms’ degradation of agro-industrial waste produces bad odors and greenhouse gases that contribute to global warming. Consequently, eco-friendly, sustainable biotechnological alternatives to this waste are sought to provide additional value, which is why this study’s objective was to develop a method of producing [...] Read more.
Microorganisms’ degradation of agro-industrial waste produces bad odors and greenhouse gases that contribute to global warming. Consequently, eco-friendly, sustainable biotechnological alternatives to this waste are sought to provide additional value, which is why this study’s objective was to develop a method of producing unicellular proteins from artichoke and asparagus agro-industrial waste using Rhodotorula mucilaginosa as a producer organism. Agricultural soil was collected from the Universidad Nacional de Trujillo (Peru), and R. mucilaginosa was isolated and identified using biochemical tests. Proteins and carotenoids were produced from artichokes and asparagus residues using the R. mucilaginosa yeast. Four substrate concentrations (10, 20, 30, and 40%) and a pH range (5–8.1) were used. They were incubated at 30 °C for 72 h. The results showed that protein and carotenoid yield varied according to pH and substrate concentration. Artichoke residues reached a maximum protein yield of 25.98 mg/g and carotenoids of 159.26 μg/g at pH 5–6.6, respectively. Likewise, the asparagus residue showed a maximum protein yield of 20.22 mg/g and a carotenoid yield of 358.05 μg/g at a pH of 7.1 and 6.6, respectively. This study demonstrated the potential of artichoke and asparagus agro-industrial residues for the production of unicellular proteins and carotenoids using R. mucilaginosa. Further, it represents an appropriate alternative to properly managing agro-industrial waste, giving it an economic value. Full article
(This article belongs to the Special Issue Biotechnology for Waste Treatment and Resource Recovery)
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18 pages, 3249 KiB  
Article
Fungal Strain as Biological Tool to Remove Genotoxicity Effect of Phenolic Compounds from Olive Mill Wastewater
by Aziz Boutafda, Mohamed Hafidi, Yedir Ouhdouch, Eric Pinelli, Martin Jemo and Loubna El Fels
Sustainability 2023, 15(8), 6510; https://doi.org/10.3390/su15086510 - 12 Apr 2023
Cited by 3 | Viewed by 1848
Abstract
This study aims to select fungi isolates to reduce olive mill wastewater (OMWW) chemical oxygen demand (COD) and phenolic compounds (PC), as well as their genotoxicity effect. Treatment with mold, isolated by an innovative technique using phenolic compound-selective media, showed a reduction rate [...] Read more.
This study aims to select fungi isolates to reduce olive mill wastewater (OMWW) chemical oxygen demand (COD) and phenolic compounds (PC), as well as their genotoxicity effect. Treatment with mold, isolated by an innovative technique using phenolic compound-selective media, showed a reduction rate of about 4% for COD and 2% for PC during one month of incubation without optimization of the treatment conditions. Whereas this percentage reached 98% and 96% for COD and PC, respectively, after only 12 days of treatment, when the C:N ratio was adjusted to 30 by adding urea as a nitrogen source at 150 rpm agitation speed. Genetic sequence homology of the most efficient mold isolate showed 100% similarity to Penicillium chrysogenum. High-performance liquid chromatography analysis of phenolic extracts of untreated OMWW showed the presence of five compounds—hydroxytyrosol at 1.22 g.L−1, tyrosol at 0.05 g.L−1, caffeic acid at 0.16 g.L−1, p-coumaric acid at 0.05 g.L−1 and oleuropein at 0.04 g.L−1—that were eliminated during the degradation process at 88.82%. Genotoxicity, assessed by the Vicia-faba root cell, showed a significant decrease in micronucleus frequency of about 96% after fungal treatment. These results confirm the positive role of fungal treatment of OMWW to eliminate genotoxicity and their ability to improve the agronomic potential. Full article
(This article belongs to the Special Issue Biotechnology for Waste Treatment and Resource Recovery)
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