| Title: | Microwave Synthesis of Poly(Acrylic) Acid-Coated Magnetic Nanoparticles as Draw Solutes in Forward Osmosis |
|---|
| Authors: | ID Vohl, Sabina (Author)
ID Ban, Irena (Author)
ID Drofenik, Mihael (Author)
ID Bukšek, Hermina (Author)
ID Gyergyek, Sašo (Author)
ID Petrinić, Irena (Author)
ID Hélix-Nielsen, Claus (Author)
ID Stergar, Janja (Author) |
|---|
| Files: |  materials-16-04138-v2.pdf (3,00 MB)
MD5: EE0696B1256B6D1ED3AEA31ED3A7743E
 https://www.mdpi.com/1996-1944/16/11/4138
|
|---|
| Language: | English |
|---|
| Work type: | Article |
|---|
| Typology: | 1.01 - Original Scientific Article |
|---|
| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
|
|---|
| Abstract: | 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. |
|---|
| Keywords: | magnetic nanoparticles, microwave synthesis, polyacrilic acid, osmotic pressure, draw solution, forward osmosis |
|---|
| Publication status: | Published |
|---|
| Publication version: | Version of Record |
|---|
| Article acceptance date: | 30.05.2023 |
|---|
| Publication date: | 01.06.2023 |
|---|
| Publisher: | MDPI |
|---|
| Year of publishing: | 2023 |
|---|
| Number of pages: | 15 str. |
|---|
| Numbering: | Vol. 16, iss. 11, [Article no.] 4138 |
|---|
| PID: | 20.500.12556/DKUM-86492  |
|---|
| UDC: | 532.71 |
|---|
| ISSN on article: | 1996-1944 |
|---|
| COBISS.SI-ID: | 154963715 |
|---|
| DOI: | 10.3390/ma16114138 |
|---|
| Copyright: | © 2023 by the authors |
|---|
| Publication date in DKUM: | 05.12.2023 |
|---|
| Views: | 433 |
|---|
| Downloads: | 20 |
|---|
| Metadata: |    |
|---|
| Categories: | Misc.
|
|---|
|
:
|
Copy citation |
|---|
| | | | Average score: | (0 votes) |
|---|
| Your score: | Voting is allowed only for logged in users. |
|---|
| Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
