Feature Review Papers in the Environmental and Green Processes Section

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: closed (15 December 2022) | Viewed by 5957

Special Issue Editors

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Guest Editor
Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
Interests: biological treatment of organic waste (composting and anaerobic digestion); solid-state fermentation to convert wastes into bioproducts and nanotechnology for environmental remediation
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Guest Editor
School of Civil Engineering, University of Queensland, St Lucia, QLD 4067, Australia
Interests: circular economy; critical metals extraction; anaerobic digestion; waste/wastewater treatment; bioreactors systems optimization

Special Issue Information

Dear Colleagues,

In recent years, environmental and green processes have reached great relevance both in industrial and research fields. Especially important are all the processes that involve the use of wastes for the production of energy or bioproducts that can substitute traditional chemically based processes. Usually, these environmental and green processes are more sustainable and can fit in a circular economy framework.

The aim of this Special Issue is to compile a set of reviews in all the emerging fields of environmental and green processes that can provide significant advantages with respect to traditional processes. This includes the main topics of environmental and green processes—energy, water, air, and waste—but is also open to other fields.

In all cases, data on environmental impact assessment and economic analysis of the green processes will be especially welcome, as they will help to fill fundamental gaps for these processes to be scaled up and commercially developed.

Prof. Dr. Antoni Sánchez
Dr. Denys Gomez
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. Processes 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.


  • air pollution
  • waste and wastewater
  • solid-state fermentation
  • composting
  • anaerobic digestion
  • microbial electrolysis cells
  • soil bioremediation
  • life cycle assessment
  • economic analyses

Published Papers (1 paper)

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21 pages, 1696 KiB  
Distribution of Sulfate-Reducing Bacteria in the Environment: Cryopreservation Techniques and Their Potential Storage Application
by Ivan Kushkevych, Aneta Kovářová, Dani Dordevic, Jonah Gaine, Peter Kollar, Monika Vítězová and Simon K.-M. R. Rittmann
Processes 2021, 9(10), 1843; https://doi.org/10.3390/pr9101843 - 18 Oct 2021
Cited by 9 | Viewed by 5026
Sulfate-reducing bacteria (SRB) are a heterogeneous group of anaerobic microorganisms that play an important role in producing hydrogen sulfide not only in the natural environment, but also in the gastrointestinal tract and oral cavity of animals and humans. The present review was written [...] Read more.
Sulfate-reducing bacteria (SRB) are a heterogeneous group of anaerobic microorganisms that play an important role in producing hydrogen sulfide not only in the natural environment, but also in the gastrointestinal tract and oral cavity of animals and humans. The present review was written with the inclusion of 110 references including the time period from 1951 to 2021. The following databases were evaluated: Web of Science, Scopus and Google Scholar. The articles chosen to be included in the review were written mainly in the English and Czech languages. The molecular mechanisms of microbial cryoprotection differ depending on the environment where microorganisms were initially isolated. It was observed that the viability of microorganisms after cryopreservation is dependent on a number of factors, primarily colony age, amount of inoculum, cell size or rate of cooling, and their molecular inventory. Therefore, this paper is devoted to assessing the performance and suitability of various cryopreservation methods of intestinal bacteria, including molecular mechanisms of their protection. In order to successfully complete the cryopreservation process, selecting the correct laboratory equipment and cryopreservation methodology is important. Our analysis revealed that SRB should be stored in glass vials to help mitigate the corrosive nature of hydrogen sulfide, which can affect their physiology on a molecular level. Furthermore, it is recommended that their storage be performed in distilled water or in a suspension with a low salt concentration. From a molecular biological and bioengineering perspective, this contribution emphasizes the need to consider the potential impact associated with SRB in the medical, construction, and environmental sectors. Full article
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