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All Journal ASEAN Journal for Science and Engineering in Materials
Prihastuti, Hesti
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Conversion of Indonesian Coal Fly Ash into Zeolites for Ammonium Adsorption Prihastuti, Hesti; Kurniawan, Teguh
ASEAN Journal for Science and Engineering in Materials Vol 1, No 2 (2022): AJSEM: Volume 1, Issue 2, September 2022
Publisher : Bumi Publikasi Nusantara

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Abstract

The synthesis of zeolite from fly ash has been investigated. The method used for the synthesis of zeolite in this research is the smelting method followed by a hydrothermal process. The zeolite synthesis was characterized using XRD and SEM. Based on the research results, it was found that fly ash can be synthesized into Na-P zeolite with morphology like coral, and cancrinite zeolite and sodalite with morphology like seaweed. The optimum condition for zeolite synthesis occurred at a hydrothermal process at 160°C for 24 hours with the formation of cancrinite zeolite. The synthesized zeolite resulting from the separation of 4 M of HCl formed Na-P zeolite and silica phase crystals which had the most optimum absorption of ammonium with an adsorption capacity of 18.025 mg/g with the adsorption kinetics model in the form of pseudo-second-order with a constant rate of 0.557 h-1 .
Co-Authors Teguh Kurniawan