Badri, Arini Fousty and Bahar Nur Siregar, Patimah Mega Syah and Palapa, Neza Rahayu and Mohadi, Risfidian and Mardiyanto, Mardiyanto and Lesbani, Aldes (2021) Mg-Al/Biochar Composite with Stable Structure for Malachite Green Adsorption from Aqueous Solutions (Similarity). Turnitin Universitas Sriwijaya. (Submitted)
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Abstract
Mg-Al-layered double hydroxide (LDH) was fabricated using a coprecipitation method at pH 10. Thereafter, Mg-Al-LDH was impregnated with biochar to manufacture a Mg-Al/Biochar composite. The composite was character-ized using powder X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, N2 adsorption—desorption, thermogravimetry-differential thermal analysis (TG-DTA), and scanning electron microscopy (SEM) experiments, and was subsequently used for malachite green (MG) adsorption. MG adsorption experiments were performed in a batch system, and the effects of temperature and adsorption kinetic and isotherm parameters on the adsorption process were analyzed. The stability of Mg-Al/Biochar was evaluated using regeneration experi-ments over three cycles. The peaks at 11.47° (003), 22.86° (002), 34.69° (012), and 61.62° (116), in the XRD profile of Mg-Al/Biochar suggested that Mg-Al/Biochar was successfully fabricated. The surface area of Mg-Al/Biochar was up to five times larger than that of pristine Mg-Al-LDH. The adsorption of MG on Mg-Al/Biochar was domi-nated by interactions at the surface of the adsorbent and was classified as physical adsorption; moreover the maxi-mum adsorption capacity of Mg-Al/Biochar was 70.922 mg/g. Furthermore, the MG removal of Mg-Al/Biochar dur-ing three successive adsorption cycles (i.e. 66.73%, 65.57%, and 65.77% for the first, second, and third adsorption cycle) did not change significantly, which indicated the stable structure of the adsorbent.
| Item Type: | Other |
|---|---|
| Subjects: | #3 Repository of Lecturer Academic Credit Systems (TPAK) > Results of Ithenticate Plagiarism and Similarity Checker |
| Divisions: | 08-Faculty of Mathematics and Natural Science > 47102-Chemistry (S2) |
| Depositing User: | Dr.rer.nat Risfidian Mohadi |
| Date Deposited: | 05 Sep 2022 08:54 |
| Last Modified: | 05 Sep 2022 08:54 |
| URI: | http://repository.unsri.ac.id/id/eprint/77904 |
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