Proceedings of The 5th Annual International Seminar on Trends in Science and Science Education, AISTSSE 2018, 18-19 October 2018, Medan, Indonesia

Research Article

Synthesis of A and X Zeolites from Non Magnetic Ash of Rice Husks Through the Hydrothermal Process in the Alkaline Bases Condition

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  • @INPROCEEDINGS{10.4108/eai.18-10-2018.2287299,
        author={Iis Siti Jahro and Asep Wahyu Nugraha and Nurfajriani  Nurfajriani},
        title={Synthesis of A and X Zeolites from Non Magnetic Ash of Rice Husks Through the Hydrothermal Process in the Alkaline  Bases Condition},
        proceedings={Proceedings of The 5th Annual International Seminar on Trends in Science and Science Education, AISTSSE 2018, 18-19 October 2018, Medan, Indonesia},
        publisher={EAI},
        proceedings_a={AISTSSE},
        year={2019},
        month={10},
        keywords={ash of rice husks zeolite synthesis characterization},
        doi={10.4108/eai.18-10-2018.2287299}
    }
    
  • Iis Siti Jahro
    Asep Wahyu Nugraha
    Nurfajriani Nurfajriani
    Year: 2019
    Synthesis of A and X Zeolites from Non Magnetic Ash of Rice Husks Through the Hydrothermal Process in the Alkaline Bases Condition
    AISTSSE
    EAI
    DOI: 10.4108/eai.18-10-2018.2287299
Iis Siti Jahro1,*, Asep Wahyu Nugraha1, Nurfajriani Nurfajriani1
  • 1: Chemistry Department, Medan State University, William Iskandar Street, Medan, Indonesia
*Contact email: jahrostiis@gmail.com

Abstract

In the general, rice mills produce rice, husks and brand around 72, 20 and 8 % respectively. The burning of rice husks produce ash around 18 %. Ash of rice husks contain silica which is zeolite-forming mineral around 88%. The purification ash of rice husks was conducted through a magnetic separation process using a bar magnet in water. Magnetic separation process produce 92.36 % non magnetic ash of rice husks and 5.64% impurities magnetic. The synthesis of zeolite from non magnetic ash of rice husks through hydrothermal process in an alkaline condition. It was carried out by starting process of forming sodium silicate and aluminate compounds through the reaction of non magnetic ash of rice husks with Al2O3 and NaOH in water accompanied by stirring at 600 rpm in the room temperature for 10 hours. Then the results of reaction was refluxed at 70oC for 3 hours so that a mixture of gel was produced. However, the production of X-zeolite which the mixture of gel was refluxed at 120oC for 8 hours. The results of FT-IR and XRD charaterization showed that the A-zeolite has infrared absorption bands in the wave number region of 426.26, 603.24, 1000 cm-1 and diffraction peaks at 2 angles of 12.42, 17.65, 21.63, 28.70 and 33.51 degrees. Whereas the X-zeolite showed infrared absorption bands in the wave number regions of 440.70, 606.44, 745.14, 1007.88 cm-1 and diffraction peaks at 2 angles of 12.34, 17.51, 21.53, 27.90, 28.50 and 33.22 degrees.