QUALITATIVE ANALYSIS OF FILTERS FOR THE MECHANICAL NANOFILTRATION OF HOUSEHOLD DRINKING WATER

Oana-Adriana CRIȘAN; Marius Sorin PUSTAN; Corina Julieta BÎRLEANU; Ancuța Elena TIUC; Ioana SUR; Horea-George CRIȘAN; Florina Maria ȘERDEAN; Lazăr FLĂMÎND; Tiberiu RUSU

doi:10.24193/subbchem.2020.1.20

Authors

Oana-Adriana CRIȘAN Technical University of Cluj-Napoca, Faculty of Materials and Environmental Engineering, 103-105 Muncii Ave, Cluj-Napoca, Romania. *Corresponding author: crisanoanaadriana@yahoo.com
Marius Sorin PUSTAN Technical University of Cluj-Napoca, Faculty of Machine Building, 103-105 Muncii Ave, Cluj-Napoca, Romania https://orcid.org/0000-0002-1683-8663
Corina Julieta BÎRLEANU Technical University of Cluj-Napoca, Faculty of Machine Building, 103-105 Muncii Ave, Cluj-Napoca, Romania https://orcid.org/0000-0002-2532-9940
Ancuța Elena TIUC Technical University of Cluj-Napoca, Faculty of Materials and Environmental Engineering, 103-105 Muncii Ave, Cluj-Napoca, Romania https://orcid.org/0000-0001-6227-1824
Ioana SUR Technical University of Cluj-Napoca, Faculty of Materials and Environmental Engineering, 103-105 Muncii Ave, Cluj-Napoca, Romania https://orcid.org/0000-0002-3275-5745
Horea-George CRIȘAN Technical University of Cluj-Napoca, Faculty of Machine Building, 103-105 Muncii Ave, Cluj-Napoca, Romania
Florina Maria ȘERDEAN Technical University of Cluj-Napoca, Faculty of Machine Building, 103-105 Muncii Ave, Cluj-Napoca, Romania https://orcid.org/0000-0002-0195-5701
Lazăr FLĂMÎND Technical University of Cluj-Napoca, Faculty of Materials and Environmental Engineering, 103-105 Muncii Ave, Cluj-Napoca, Romania
Tiberiu RUSU Technical University of Cluj-Napoca, Faculty of Materials and Environmental Engineering, 103-105 Muncii Ave, Cluj-Napoca, Romania

DOI:

https://doi.org/10.24193/subbchem.2020.1.20

Keywords:

mechanical nanofiltration, atomic force microscopy, nanoindentation, optical microscopy, water filters, drinking water

Abstract

The research carried out in this paper aimed to identify and compare the mechanical filtration capacity of the existing nanoparticles, correlated with the electro-chemical properties of the drinking water provided to the household users through the public network of Cluj-Napoca. The tested filters are available to the general public and the results of the research provide both the certainty of the importance of using drinking water filters, but also the prospect of purchasing an optimal relation quality - price filter based on the needs of the domestic users.

The qualitative analysis of the tested filters was carried out by laboratory testing of a representative sample of drinking water filters that once reached the maximum lifetime, were cut and subjected to microscopic analysis using an Atomic force microscope (AFM). The microscopic analysis aimed to determine the filtration capacity by identifying the size and agglomeration density of the nanoparticles retained by mechanical filtration.

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