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Applied Sciences
Special Issues
Innovative Environmental Technologies and Challenges
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Innovative Environmental Technologies and Challenges

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (10 August 2021) | Viewed by 5853

Special Issue Editors

Dr. Magdalena Zabochnicka

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Guest Editor
Associate Professor, Faculty of Infrastructure and Environment, Czestochowa University of Technology, 42-201 Czestochowa, Poland
Interests: environmental sciences; wastewater treatment; management of wastes; renewable energy sources; bioenergy; carbon capture and storage; bioplastics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Malgorzata Krzywonos

E-Mail Website
Guest Editor
Wroclaw University of Economics and Business, Wroclaw, Poland
Interests: wastewater treatment; environmental biotechnology; renewable energy fuels; biofuel; aerobic biodegradation; biosorption; biotechnology; probiotics; lactic bacteria; decolorization

Special Issue Information

Dear Colleagues,

The development of innovative environmental technologies that improve on the existing ones still represents an urgent need in the modern world. Soil, air, and water need new technologies that will help toward their sustainable development. Renewable energy sources are also important to help our environment to develop in a sustainable way. The demand for fuels is still increasing, and combustion of fossil fuels will contribute to the gradual increase in the concentration of carbon dioxide in the atmosphere. Meanwhile, the increase in energy prices is becoming more and more noticeable. Therefore, special focus is placed on the use of alternative and efficient sources of energy. What is more, the circular economy can improve sustainability in the long term by contributing in the preservation of resources and decrease of costs of industries.

This Special Issue represents a platform for discussion on Innovative Environmental Technologies and Challenges. The topics of interest for this Special Issue include but are not limited to the following:

  • Innovations in environmental technologies;
  • Sustainable development;
  • Environmental biotechnology;
  • Water and wastewater treatment;
  • Application of membrane technology;
  • Waste treatment, recycling and disposal;
  • Sediment treatment;
  • (Bio)remediation methods for contaminated soil;
  • Biodegradation of contaminants;
  • Innovations in microalgae biomass production and utilization;
  • Nanotechnology;
  • New materials;
  • Biofuels;
  • Renewable energy technologies;
  • Carbon dioxide capture and sequestration;
  • Life cycle assessment;
  • Bio-based industry;
  • Transition to sustainable development.

Prof. Magdalena Zabochnicka-Świątek
Prof. Malgorzata Krzywonos
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. 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

  • environmental biotechnology
  • environmental engineering
  • renewable energy sources
  • biofuels
  • biodegradation
  • bioremediation
  • bio-based industry

Published Papers (2 papers)

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Research

20 pages, 5499 KiB  
Article
Impact of Praseodymia Additions and Firing Conditions on Structural and Electrical Transport Properties of 5 mol.% Yttria Partially Stabilized Zirconia (5YSZ)
by Alejandro Natoli, Jorge R. Frade, Aleksandr Bamburov, Agnieszka Żurawska and Aleksey Yaremchenko
Appl. Sci. 2021, 11(13), 5939; https://0-doi-org.brum.beds.ac.uk/10.3390/app11135939 - 25 Jun 2021
Cited by 3 | Viewed by 1528
Abstract
Ceramics samples with the nominal composition [(ZrO2)0.95(Y2O3)0.05]1-x[PrOy]x and praseodymia contents of x = 0.05–0.15 were prepared by the direct firing of compacted 5YSZ + PrOy mixtures [...] Read more.
Ceramics samples with the nominal composition [(ZrO2)0.95(Y2O3)0.05]1-x[PrOy]x and praseodymia contents of x = 0.05–0.15 were prepared by the direct firing of compacted 5YSZ + PrOy mixtures at 1450–1550 °C for 1–9 h and characterized for prospective applicability in reversible solid oxide cells. XRD and SEM/EDS analysis revealed that the dissolution of praseodymium oxide in 5YSZ occurs via the formation of pyrochlore-type Pr2Zr2O7 intermediate. Increasing PrOy additions results in a larger fraction of low-conducting pyrochlore phase and larger porosity, which limit the total electrical conductivity to 2.0–4.6 S/m at 900 °C and 0.28–0.68 S/m at 700 °C in air. A longer time and higher temperature of firing promotes the phase and microstructural homogenization of the ceramics but with comparatively low effect on density and conductivity. High-temperature processing leads to the prevailing 3+ oxidation state of praseodymium cations in fluorite and pyrochlore structures. The fraction of Pr4+ at 600–1000 °C in air is ≤2% and is nearly independent of temperature. 5YSZ ceramics with praseodymia additions remain predominantly oxygen ionic conductors, with p-type electronic contribution increasing with Pr content but not exceeding 2% for x = 0.15 at 700–900 °C. The average thermal expansion coefficients of prepared ceramics are in the range of 10.4–10.7 ppm/K. Full article
(This article belongs to the Special Issue Innovative Environmental Technologies and Challenges)
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15 pages, 5144 KiB  
Article
Propagation of Inoculum for Haematococcus pluvialis Microalgae Scale-Up Photobioreactor Cultivation System
by Daniel Borowiak, Katarzyna Pstrowska, Maciej Wiśniewski and Michał Grzebyk
Appl. Sci. 2020, 10(18), 6283; https://0-doi-org.brum.beds.ac.uk/10.3390/app10186283 - 09 Sep 2020
Cited by 6 | Viewed by 3384
Abstract
An increasing number of microalgae strains are used for commercial production of metabolites. When conducting research, the moment of the process scaling tends to be very difficult. One of the most complex issues is related to planning and designing an efficient system for [...] Read more.
An increasing number of microalgae strains are used for commercial production of metabolites. When conducting research, the moment of the process scaling tends to be very difficult. One of the most complex issues is related to planning and designing an efficient system for propagation of appropriately high amounts of inoculum required for inoculating cultures on a semi-technical and industrial scale. The following paper aimed at designing an automated station for the preparation of microalgae inoculation material intended for inoculation of the system, comprising of six 90 dm3 volume photobioreactors. The system, comprised of eight airlift photobioreactors of 12 dm3 volume each, installed in mobile storage units connected to the control system in the form of a docking station. Each of the photobioreactors had a separate system used for monitoring temperature and pH, mixing, and LED lighting. The station constituted the last stage of preparing the inoculation material for inoculating technical-scale photobioreactors, used for conducting experiments with Haematococcus pluvialis microalgae. Achieved results, repeatability of the processes, and the ergonomics of the station increased the productivity and quality of the research and development processes. Full article
(This article belongs to the Special Issue Innovative Environmental Technologies and Challenges)
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