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Improving ammonium sorption of bayah natural zeolites by hydrothermal method
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Document Title
Improving ammonium sorption of bayah natural zeolites by hydrothermal method
Author
Kurniawan T., Bahri S., Diyanah A., Milenia N.D., Nuryoto N., Faungnawakij K., Thongratkaew S., Bilad M.R., Huda N.
Name from Authors Collection
Scopus Author ID
57204284737
Affiliations
Chemical Engineering Department, Universitas Sultan Ageng Tirtayasa, Jl. Jenderal Sudirman Km. 03, Cilegon, 42435, Indonesia; National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science ParkPathum Thani 12120, Thailand; Chemical Engineering Department, Universiti Teknologi PETRONAS, Seri Iskandar, Perak 32610, Malaysia; Faculty of Food Science and Nutrition, Universiti Malaysia Sabah UMS, Jalan, Kota Kinabalu, Sabah 88400, Malaysia
Type
Article
Source Title
Processes
ISSN
22279717
Year
2020
Volume
8
Issue
12
Page
01-Nov
Open Access
Gold, Green
Publisher
MDPI AG
DOI
10.3390/pr8121569
Abstract
Natural zeolites are easily found and abundant in Indonesia. The natural zeolites are low-cost minerals; however, their ammonium sorption is poor. A hydrothermal method was applied to improve the ammonium sorption. Hydrothermal treatment times were varied 8, 24, and 32 h. The parent and hydrothermal treated samples were characterized by using X-ray diffraction (XRD), Field Emission Scanning Electron Microscopes (FE-SEM), Fourier-transform infrared spectroscopy (FTIR), and nitrogen physisorption. Ammonium adsorption was performed using a batch reactor to evaluate the adsorption performance of the prepared zeolite samples. The 8 h hydrothermal (HT 8 h) treated zeolites showed the highest ammonium removal percentage among others. The XRD analysis of HT 8 h shows a higher crystallinity of mordenite and the Brunauer–Emmett–Teller (BET) model shows a surface area of 105 m2 /g, much larger as compared to the parent with a surface area of 19 m2 /g. Various kinetic and isotherms models were also studied on the parent and HT 8 h samples. The intraparticle equation showed the most accurate model for the kinetic data and the Freundlich equation showed the most accurate model for the isotherm of the experimental data. In terms of ammonium removal efficiency, hydrothermally treated Bayah mordenite compares favorably with treated mordenite from other locations despite that clinoptilolite provides higher removal capacities than mordenite. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Keyword
Adsorption | Clinoptilolite | Crystallinity | Freundlich | Intraparticle | Ion-exchange | Isotherm | Kinetic | Mordenite
Funding Sponsor
Direktorat Jenderal Pendidikan Tinggi; Universiti Malaysia Sabah
License
CC BY
Rights
Author
Publication Source
Scopus