Research Article
Adsorption-Desorption Properties of Ammonium Ion on Zeolite Bottom Ash in Aqueous Solution
@INPROCEEDINGS{10.4108/eai.12-10-2019.2296462, author={Galuh Yuliani and Widya Liswanti and Rahmadhita Murida and Siska Mutiara and Agus Setiabudi}, title={Adsorption-Desorption Properties of Ammonium Ion on Zeolite Bottom Ash in Aqueous Solution}, proceedings={Proceedings of the 7th Mathematics, Science, and Computer Science Education International Seminar, MSCEIS 2019, 12 October 2019, Bandung, West Java, Indonesia}, publisher={EAI}, proceedings_a={MSCEIS}, year={2020}, month={7}, keywords={bottom ash zeolite adsorption ammonium ion}, doi={10.4108/eai.12-10-2019.2296462} }- Galuh Yuliani
Widya Liswanti
Rahmadhita Murida
Siska Mutiara
Agus Setiabudi
Year: 2020
Adsorption-Desorption Properties of Ammonium Ion on Zeolite Bottom Ash in Aqueous Solution
MSCEIS
EAI
DOI: 10.4108/eai.12-10-2019.2296462
Abstract
Coal bottom ash (CBA) is potentially used as a raw material in zeolite manufactures due to its high SiO2 and Al2O3 contents. We report the conversion of CBA into zeolites-like material via a low-temperature method of 90°C for 24 h using NaOH solution. FTIR spectra confirmed characteristic zeolite peaks at 980-1170 cm-1, 740.6 cm-1, 439.7 cm-1, 559.3 cm-1 for Si-O, Al-O and Si-O-Al absorptions, respectively. XRD results indicated the formation of sodium aluminosilicate hydrat, XRF results indicated the domination of Al2O3 and SiO2. BET analysis resulted in the surface area of zeolite was 60.38 m2/g, markedly increased from the initial surface area of CBA of 0.598 m2/g. The maximum adsorption capacity for ammonium ions was 85.22 mg/g and the adsorption data fitted the Freundlich isotherm model. Meanwhile, the desorption study indicated that the ammonium leached rapidly in the first 3 h followed by a plateau in the next 71 h.