Removal of methylene blue dyes using graphene oxide-intercalated bentonite composites
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Author |
Muhammad Said, Della Silvia Natalia Sitorus, David Fernando, Suheriyanto, Elisa Nurnawati, Muhammad Kozin, Wiwien Andriyanti and Bayu Mahdi Kartika
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e-ISSN |
1819-6608 |
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On Pages
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1321-1326
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Volume No. |
19
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Issue No. |
21
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Issue Date |
December 27, 2024
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DOI |
https://doi.org/10.59018/112464
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Keywords |
composite, graphene, graphene oxide, adsorption, methylene blue, intercalated, bentonite, bentonite-GO.
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Abstract
Reduction of methylene blue levels has been carried out using the adsorption method with Bentonite-GO adsorbent. Adsorption is used because it has advantages at a low cost and is easy to modify. Bentonite is modified using GO because it has properties that are suitable for reducing dye waste. Bentonite-GO was characterized using XRD, SEM-EDS, and BET. Based on the XRD characterization results, GO is obtained with peaks at an angle of 10.57o, and in bentonite there are several peaks, namely 22.10°; 28,1°; and 35,63°. For bentonite/GO composites, it is best found at a 1:3 ratio with a peak of 25.61°. SEM-EDS is used to determine morphological changes of bentonite and after composite with GO. In the Bentonite-GO composite, it can be seen where in the pores of bentonite there is GO that fills the gap in bentonite which has a porous structure. Based on the EDS results on the Bentonite-GO composite, there was also a very large increase in carbon atoms. In BET, the surface area of the Bentonite-GO composite was 91.5059 m2/g and the pore volume was 0.1997 cm3/g. Methylene reduction obtained the best adsorption capacity at 60 minutes contact time with a percentage of 89.83% and a Qe value of 9.5 mg/g and a maximum composite concentration at a concentration of 35 mg/L with a percentage of 97.83 and a Qe value of 10.272 mg/g.
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