Pillarization of Sumatera Bentonite by Sodium-assisted As Effective Adsorbent of Anionic Surfactants Sodium Lauryl Sulphate (SLS) Waste

Risfidian Mohadi (Graduate School, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang, 30139, South Sumatera||Indonesia Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang, 30139, South Sumate)
Yusuf Mathiinul Hakim (Graduate School, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang, 30139, South Sumatera)
Rahma Dinta Astuti (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang, 30139, South Sumatera)
Idha Royani (Department of Physics, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang, 30139, South Sumatera)
Mardiyanto Mardiyanto (Pharmaceutical Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang, 30139, South Sumatera)

Bulletin of Chemical Reaction Engineering & Catalysis
2023: BCREC Volume 18 Issue 1 Year 2023 (April 2023)

In this work, the Sumatera bentonite was sodium-pillarized in a new low-temperature and restricted time preparation route and then applied in anionic surfactant sodium lauryl sulphate removal. Structure characterization used Fourier Transform Infra Red (FT-IR), Scanning Electron Microscope - Energy Dispersive X-ray (SEM-EDX), X-ray Diffraction (XRD), and Brunauer–Emmett–Teller (BET) analysis. A strong peak at 22° and 35.66° in XRD analysis was detected as Sodium-pillar that increased crystallinity, then the functional changes of dehydration in lattice structure were detected in 1013 cm−1 by FTIR analysis. The morphology and compositional transformation were analyzed by SEM-EDX and BET analysis, denoted by increasing particle shape and sodium intercalant composition homogeneity. Moreover, the surface area increased from 61.791 to 66.086 m2/g. The sodium lauryl sulphate adsorption by bentonite-Na reached maximum capacity at 8.403 mg/g, which is higher than the pristine bentonite (5.747 mg/g) under the optimum condition. The adsorption mechanism is feasible, endothermic, and conformed to the pseudo-second-order and Freundlich adsorption model. The new route proposed for sodium intercalation effectively improves the Sumatera bentonite adsorption ability to remove sodium lauryl sulphate waste. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).