Page 11 - أبحاث كلية الهندسة

2017 Publications

Arabian Journal of Chemistry
Volume 10, Issue 5, July 2017, Pages

611-623

Adsorption performance of magnesium/aluminumlayered double hydroxide
nanoparticles formetronidazole from aqueous solution

Mohammad Noori Sepehra, Tariq J. Al-Musawib, Esmail Ghahramanic,Hossein Kazemiand, Mansur
Zarrabi

Magnesium/aluminum layered double hydroxide (LDH) nanoparticles were synthesized
by hydrolyzing urea and used to remove metronidazole (MN) from aqueous solution.
The surface morphology images of the LDH nanoparticles showed that the adsorbent
surface consisted of hexagonal nanosheets with a diameter of 200–1000 nm. The MN
removal efficiency was strongly dependent on the solution pH ranging from 3 to 9. The
addition of nitrate, sulfate, and carbonate did not remarkably affect MN adsorption,
while hardness slightly improved MN removal efficiency. The adsorption isotherm data
could be well described using the Sips equation. The analysis of kinetic data showed
that the adsorption of MN onto LDH closely followed the Avrami model and that
several kinetic processes may control the rate of sorption. The adsorption process was
non-spontaneous and exothermic in nature. The maximum Langmuir adsorption
capacity was 62.804 mg/g, demonstrating that LDH is an efficient adsorbent that can be
used for the removal of MN compounds.
https://www.sciencedirect.com/science/article/pii/S1878535216301010?via%3Dihub

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