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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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EL
| URI | http://purl.tuc.gr/dl/dias/E6039D42-19F8-4099-8093-DE4A44916400 | - |
| Identifier | https://www.sciencedirect.com/science/article/pii/S1350417716303157?via%3Dihub | - |
| Identifier | https://doi.org/10.1016/j.ultsonch.2016.09.004 | - |
| Language | en | - |
| Extent | 9 pages | en |
| Title | Ultrasound-assisted removal of Acid Red 17 using nanosized Fe3O4-loaded coffee waste hydrochar | en |
| Creator | Kayan Berkant | en |
| Creator | Kalderis Dimitrios | en |
| Creator | Karimi Atefeh | en |
| Creator | Akay Sema | en |
| Creator | Konsolakis Michail | en |
| Creator | Κονσολακης Μιχαηλ | el |
| Publisher | Elsevier | en |
| Content Summary | The Fe3O4-loaded coffee waste hydrochar (Fe3O4-CHC) was synthesized using a simple precipitation method. The as-prepared adsorbent was characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Fourier transform infrared spectroscopy (FT-IR). The EDX analysis indicated the presence of Fe in the structure of Fe3O4-CHC. The specific surface area of hydrochar increased from 17.2 to 34.7 m2/g after loading of Fe3O4 nanoparticles onto it. The prepared Fe3O4-CHC was used for removal of Acid Red 17 (AR17) through ultrasound-assisted process. The decolorization efficiency decreased from 100 to 74% with the increase in initial dye concentration and from 100 to 91 and 85% in the presence of NaCl and Na2SO4, respectively. The synthesized Fe3O4-CHC exhibited good stability in the repeated adsorption-desorption cycles. The high correlation coefficient (R2 = 0.997) obtained from Langmuir model indicated that physical and monolayer adsorption of dye molecules occurred on the Fe3O4-CHC surface. Furthermore, the by-products generated through the degradation of AR17 was identified by gas chromatography–mass spectrometry analysis. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2018-05-29 | - |
| Date of Publication | 2017 | - |
| Subject | Dye removal | en |
| Subject | Fe3O4 nanoparticles | en |
| Subject | Hydrochar | en |
| Subject | Magnetite | en |
| Subject | Sonolysis | en |
| Subject | Ultrasound | en |
| Bibliographic Citation | A. Khataee, B. Kayan, D. Kalderis, A. Karimi, S. Akay and M. Konsolakis, "Ultrasound-assisted removal of Acid Red 17 using nanosized Fe3O4-loaded coffee waste hydrochar," Ultrason. Sonochem., vol. 35, pt. 1, pp. 72-80, Mar. 2017. doi: 10.1016/j.ultsonch.2016.09.004 | en |
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