Sabina Markuš (Avtor), Irena Ban (Avtor), Mihael Drofenik (Avtor), Hermina Bukšek (Avtor), Sašo Gyergyek (Avtor), Irena Petrinić (Avtor), Claus Hélix-Nielsen (Avtor), Janja Stergar (Avtor)

Povzetek

Polyacrylic acid (PAA)-coated magnetic nanoparticles (MNP@PAA) were synthesized and evaluated as draw solutes in the forward osmosis (FO) process. MNP@PAA were synthesized by microwave irradiation and chemical co-precipitation from aqueous solutions of Fe2+ and Fe3+ salts. The results showed that the synthesized MNPs have spherical shapes of maghemite Fe2O3 and superparamagnetic properties, which allow draw solution (DS) recovery using an external magnetic field. Synthesized MNP, coated with PAA, yielded an osmotic pressure of ~12.8 bar at a 0.7% concentration, resulting in an initial water flux of 8.1 LMH. The MNP@PAA particles were captured by an external magnetic field, rinsed in ethanol, and re-concentrated as DS in repetitive FO experiments with deionized water as a feed solution (FS). The osmotic pressure of the re-concentrated DS was 4.1 bar at a 0.35% concentration, resulting in an initial water flux of 2.1 LMH. Taken together, the results show the feasibility of using MNP@PAA particles as draw solutes.

Ključne besede

rečne usedline;težke kovine;ekstrakcija;magnetic nanoparticles;microwave synthesis;polyacrilic acid;osmotic pressure;draw solution;forward osmosis;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Založnik: MDPI
UDK: 532.71
COBISS: 154963715 Povezava se bo odprla v novem oknu
ISSN: 1996-1944
Št. ogledov: 24
Št. prenosov: 1
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: rečne usedline;težke kovine;ekstrakcija;
Vrsta dela (COBISS): Članek v reviji
Strani: 15 str.
Letnik: ǂVol. ǂ16
Zvezek: ǂiss. ǂ11, [Article no.] 4138
Čas izdaje: 2023
DOI: 10.3390/ma16114138
ID: 21465641