Silaen, Luna and Elfita, Elfita and Mohadi, Risfidian and Normah, Normah and Juleanti, Novie and Palapa, Neza Rahayu and Lesbani, Aldes (2021) Soft Ion Divalent Metals toward Adsorption on Zn/Al-POM Layered Double Hydroxide (Similarity). Turnitin Universitas Sriwijaya. (Submitted)
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Abstract
Development of Zn/Al layered double hydroxide by intercalation using polyoxometalate (POM) K4[α-SiW12O40] to Zn/Al-POM was investigated. The success of the modification is evidenced by the XRD, FT-IR, and BET characterization data. XRD characterization showed an increase in the interlayer distance from 8.59 Å in Zn/Al LDHs to 10.26 Å in Zn/Al-POM. This success is also supported by the FT-IR data with the appearance of vibrations around 779–979 cm-1 which indicates the vibration of the polyoxometalate compound in Zn/Al-POM. Other supporting data in the form of BET also prove an increase in surface area from 1.968 m2/g in Zn/Al LDHs to 14.042 m2/g Zn/Al-POM. The ability of Zn/Al-POM as an adsorbent is proven through several parameters such as kinetics, isotherm, thermodynamics, and regeneration for Cd2+, Pb2+, Ni2+, and Co2+. Adsorption kinetics showed that Zn/Al-POM was more likely to follow the pseudo-second-order adsorption kinetics model for Cd2+, Pb2+, Ni2+, and Co2+. The results of determining the adsorption isotherm parameters of Zn/Al-POM tend to follow the Freundlich isotherm model with a maximum adsorption capacity of 74.13 mg/g on Pb2+. The regeneration process showed that Zn/Al-POM was more resistant than Zn/Al LDHs up to 3 cycles. It was proven that Zn/Al-POM was able to survive in the last cycle up to 69.19% on Ni2+.
| 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 > 54241-Marine Science (S1) |
| Depositing User: | Dr.rer.nat Risfidian Mohadi |
| Date Deposited: | 07 Sep 2022 23:18 |
| Last Modified: | 07 Sep 2022 23:18 |
| URI: | http://repository.unsri.ac.id/id/eprint/77915 |
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