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Development of electrospun films from wastewater treatment plant sludge
ID Lavrič, Gregor (Author), ID Miletić, Aleksandra (Author), ID Pilić, Branka (Author), ID Medvešček, Daša (Author), ID Nastran, Saša (Author), ID Vrabič Brodnjak, Urška (Author)

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Abstract
Electrospinning is a versatile method for producing continuous polymer nanofibers, including from wastewater treatment plant sludge (WTPS). In this context, purified WTPS was successfully used to produce electrospun fibers. The main objective of our research was to produce new, local, circular, renewable and environmentally friendly packaging material. The aim of the research was to purify and treat WTPS to make it suitable for the electrospinning process, thus producing a new material and chemically characterizing it in the first step. One of the major advantages of our process was that the electrospinning process could be carried out with water and ethylenediaminetetraacetic acid. The optimal viscosity was determined to be 20,000 mPas in order to produce sufficient nanofibers. Analyses such as Fourier-Transform Infrared Spectroscopy (FTIR) and $^1$H-NMR (proton nuclear magnetic resonance) were used to determine the substances of unpurified and purified WTPS. The tensile properties, contact angle, surface properties and differential scanning calorimetry of the final material were determined and used. The $^1$H-NMR analysis confirmed the presence of a small quantity of polyhydroxyalkanoates in the samples. Based on the properties, the final material was brittle and less stretchable compared to electrospun packaging films available in the market.

Language:English
Keywords:wastewater treatment, electrospinning, differential scanning calorimetry, tensile properties, proton nuclear magnetic resonance spectroscopy, packaging
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:NTF - Faculty of Natural Sciences and Engineering
Publication status:Published
Publication version:Version of Record
Year:2021
Number of pages:11 str.
Numbering:Vol. 11, iss. 6, art. 733
PID:20.500.12556/RUL-135596 This link opens in a new window
UDC:655
ISSN on article:2079-6412
DOI:10.3390/coatings11060733 This link opens in a new window
COBISS.SI-ID:67870467 This link opens in a new window
Publication date in RUL:21.03.2022
Views:637
Downloads:93
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Record is a part of a journal

Title:Coatings
Shortened title:Coatings
Publisher:MDPI AG
ISSN:2079-6412
COBISS.SI-ID:523035673 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:18.06.2021

Secondary language

Language:Slovenian
Keywords:čiščenje odpadne vode, elektropredenje, diferenčna dinamična kalorimetrija, natezne lastnosti, jedrska magnetna resonanca, embalaža

Projects

Funder:Other - Other funder or multiple funders
Funding programme:COST
Project number:FP1405
Name:Active and Intelligent Fiber-Based Packaging

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