Magnetic attapulgite synthesized via Sonochemistry: an innovative strategy for efficient solid phase extraction of As3+ from simulated and unrefined crude oil samples

Magnetised attapulgite (ATP-Fe 3 O 4 ) adsorbent was synthesised using a sonochemistry approach for the solid phase extraction of As 3+ from stimulated and unrefined crude oil samples. The average size of the Fe 3 O 4 nanoparticles estimated from the Transmission Electron Microscopy (TEM) image was...

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Bibliographic Details
Published in:Journal of porous materials 2024-08, Vol.31 (4), p.1183-1195
Main Authors: Ali, Ehab M., Iqbal, Anwar, Ibrahim, Mohamad Nasir Mohamad, Alheety, Mustafa A., Ahmed, Naser M., Yanto, Dede Heri Yuli, Zainul, Rahadian
Format: Article
Language:English
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Summary:Magnetised attapulgite (ATP-Fe 3 O 4 ) adsorbent was synthesised using a sonochemistry approach for the solid phase extraction of As 3+ from stimulated and unrefined crude oil samples. The average size of the Fe 3 O 4 nanoparticles estimated from the Transmission Electron Microscopy (TEM) image was 10 nm. The TEM analysis also showed that Fe 3 O 4 nanoparticles agglomerated in the ATP’s tube and on its surface. The X-ray diffraction analysis (XRD) indicates that the crystallinity of the ATP reduced after the magnetisation process. The saturation magnetisation of the ATP-Fe 3 O 4 was determined to be only 2.8 emu g -1 . Under the optimum conditions (pH = 7, adsorbent dosage = 0.6 g, contact time = 90 min and sample volume = 50 mL), the As 3+ removal was more than 98% for both types of oil. The limits of detection (LOD) and relative standard deviations (RSD%) were 2.88 ng mL -1 and 0.3423%, respectively. The adsorption process follows the pseudo-first-order kinetic model (R 2  = 0.9696) and adheres to the Langmuir isotherm model (R 2  = 0.9925). The reusability study showed that ATP-Fe 3 O 4 is highly stable and can be reused five times with almost 100% removal efficiency. This research outcome aligns with the United Nations Sustainable Goal 7, Affordable and Clean Energy.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-024-01581-0