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Vol. 31 No. 4 (2019): Vol 31 Issue 4

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Modification of Lampung and Bayah Natural Zeolite to Enhance the Efficiency of Removal of Ammonia from Wastewater

https://doi.org/10.14233/ajchem.2019.21810
Tiur Elysabeth1
1Department of Chemical Engineering, Universitas Serang Raya, Serang, Indonesia 2Department of Industrial Engineering, Universitas Serang Raya, Serang, Indonesia 3Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia *Corresponding author: E-mail: slamet@che.ui.ac.id
Gina Ramayanti2
1Department of Chemical Engineering, Universitas Serang Raya, Serang, Indonesia 2Department of Industrial Engineering, Universitas Serang Raya, Serang, Indonesia 3Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia *Corresponding author: E-mail: slamet@che.ui.ac.id

Asian Journal of Chemistry, Vol. 31 No. 4 (2019): Vol 31 Issue 4

Abstract

In this research, modification of Lampung and Bayah natural zeolites was carried out to increase the zeolite’s capacity as an ammonia adsorbent. Natural zeolite is modified by acid treatment using 6 M HCl and ion exchange using 1 M NH4NO3. The modification process continued with calcination at 500 °C for 4 h. X-ray fluorescence characterization shows changes in composition in the modified zeolites. The significant increase in the Si/Al ratio occurred in the modified zeolite with acid treatment that is 10.03 for Lampung natural zeolite HCl (LNZH) and 9.20 for Bayah natural zeolite HCl (BNZH). Surface area increases due to increasing Si/Al ratio. FTIR results indicate changes in the intensity of hydroxyl groups and pyrH+ as a result of the increase in total acidity of zeolites. The zeolites performance test proves that the Bayah natural zeolite has a higher ammonia adsorption capacity than Lampung natural zeolite. Ion exchange-modified zeolite has a higher ammonia adsorption capacity than zeolite modified with acid treatment.

Keywords

Natural zeolite Zeolite modification Ammonia adsorption Wastewater
Elysabeth1, T., & Ramayanti2, G. (2019). Modification of Lampung and Bayah Natural Zeolite to Enhance the Efficiency of Removal of Ammonia from Wastewater. Asian Journal of Chemistry, 31(4), 873–878. https://doi.org/10.14233/ajchem.2019.21810
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