Removal of 2,4-Dichlorophenoxyacetic Acid from Aqueous Solutions Using Al 2 O 3 /Graphene Oxide Granules Prepared by Spray-Drying Method

Alexandra Yu. Kurmysheva, Ekaterina Kuznetsova (), Marina D. Vedenyapina, Pavel Podrabinnik, Nestor Washington Solís Pinargote, Anton Smirnov and Sergey N. Grigoriev
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Alexandra Yu. Kurmysheva: Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia
Ekaterina Kuznetsova: Laboratory of 3D Structural and Functional Engineering, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia
Marina D. Vedenyapina: N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
Pavel Podrabinnik: Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia
Nestor Washington Solís Pinargote: Laboratory of 3D Structural and Functional Engineering, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia
Anton Smirnov: Laboratory of 3D Structural and Functional Engineering, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia
Sergey N. Grigoriev: Laboratory of Electric Current Assisted Sintering Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, Russia

Resources, 2024, vol. 13, issue 3, 1-11

Abstract: Within this study, aluminum oxide granules with 0.25%vol. of graphene oxide were prepared by a spray-drying method to make an adsorbent for the 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicide removal from aqueous solutions. The obtained adsorbent was studied using infrared spectroscopy, scanning electron microscopy and Raman spectroscopy. The presence of graphene in the spray-dried powder was confirmed. The adsorption removal of 2,4-D using the obtained material was performed at an ambient temperature by varying the process parameters such as pH and adsorption time. The adsorption of 2,4-D was a monolayer chemisorption according to the Langmuir isotherm pattern and a pseudo-second-order kinetic model. The maximum Langmuir adsorption capacity of the monolayer was 35.181 mg/g. The results show that the Al 2 O 3 -0.25%vol. GO powder obtained by spray drying is suitable for the production of adsorbents for toxic herbicides.

Keywords: 2,4-D adsorption; herbicide adsorption; alumina adsorbent; graphene oxide; spray dry (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2024
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