eprintid: 12401
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/24/01
datestamp: 2023-11-10 03:26:57
lastmod: 2023-11-10 03:26:57
status_changed: 2023-11-10 01:48:42
type: article
metadata_visibility: show
creators_name: Kurniawan, T.
creators_name: Bahri, S.
creators_name: Diyanah, A.
creators_name: Milenia, N.D.
creators_name: Nuryoto, N.
creators_name: Faungnawakij, K.
creators_name: Thongratkaew, S.
creators_name: Bilad, M.R.
creators_name: Huda, N.
title: Improving ammonium sorption of bayah natural zeolites by hydrothermal method
ispublished: pub
note: cited By 9
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.
date: 2020
publisher: MDPI AG
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097260731&doi=10.3390%2fpr8121569&partnerID=40&md5=4e66b941b91854e1e8c290bdf5319f92
id_number: 10.3390/pr8121569
full_text_status: none
publication: Processes
volume: 8
number: 12
pagerange: 1-11
refereed: TRUE
issn: 22279717
citation:   Kurniawan, T. and Bahri, S. and Diyanah, A. and Milenia, N.D. and Nuryoto, N. and Faungnawakij, K. and Thongratkaew, S. and Bilad, M.R. and Huda, N.  (2020) Improving ammonium sorption of bayah natural zeolites by hydrothermal method.  Processes, 8 (12).  pp. 1-11.  ISSN 22279717