Proceedings of The 6th Asia-Pacific Education And Science Conference, AECon 2020, 19-20 December 2020, Purwokerto, Indonesia

Research Article

Synthesized Zeolite from Coal Fly Ash: Effect of Furnace and Acidic Pretreatment on the Characteristic

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  • @INPROCEEDINGS{10.4108/eai.19-12-2020.2309115,
        author={Aini Nadhokhotani Herpi and Rika Tri Yunarti and Asep Saefumillah},
        title={Synthesized Zeolite from Coal Fly Ash: Effect of Furnace and Acidic Pretreatment on the Characteristic},
        proceedings={Proceedings of The 6th Asia-Pacific Education And Science Conference, AECon 2020, 19-20 December 2020, Purwokerto, Indonesia},
        publisher={EAI},
        proceedings_a={AECON},
        year={2021},
        month={8},
        keywords={coal coal fly ash fly ash pretreatment zeolite hydrothermal},
        doi={10.4108/eai.19-12-2020.2309115}
    }
    
  • Aini Nadhokhotani Herpi
    Rika Tri Yunarti
    Asep Saefumillah
    Year: 2021
    Synthesized Zeolite from Coal Fly Ash: Effect of Furnace and Acidic Pretreatment on the Characteristic
    AECON
    EAI
    DOI: 10.4108/eai.19-12-2020.2309115
Aini Nadhokhotani Herpi1,*, Rika Tri Yunarti1, Asep Saefumillah1
  • 1: Department of Chemistry, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Indonesia. Kampus UI Depok, Depok 16424, Indonesia
*Contact email: aininadhokhotani@ui.ac.id

Abstract

Waste management is a widespread problem all across the world. Fly ash is one of the wastes generated in a large amount, where disposal of fly ash by landfill takes up agricultural lands and also causes serious problems in the respiratory system. Meanwhile, fly ash contains high silica-alumina, so that it can be used as a raw material to synthesize zeolite. In this work, fly ash from industrial synthesized into zeolite type NaP1, and the effectiveness of furnace and acidic pretreatment was studied. The synthesis of class F fly ash from Indonesia was subjected to a 36-hour hydrothermal reaction with sodium hydroxide. Synthesized zeolite was characterized by X-ray diffractometry to obtain the crystal structure of the zeolite, X-ray fluorescence to obtain the mineral composition, and SEM to obtain morphological study XRF data shows that pretreatment of fly ash has no significant effect on the content of fly ash itself, however, when fly ash was converted into zeolites, the resulting zeolites had a higher crystallinity compared to fly ash without pretreatment. It was found that the most effective pretreatment was when zeolite formed from fly ash with acidic pretreatment using 20 wt% HCl at 80 oC for 2 hours.