Renewable energy and amorphous silica obtained from rice husk combustion in a fluidized bed reactor

Juan Daniel Martínez, Tatiana Pineda, Janaina Accordi Junkes, Dachamir Hotza

    Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

    Resumen

    The rice husk combustion in a bubbling and atmospheric fluidized bed reactor was investigated. The results showed the technical viability of producing both heat and amorphous silica from a renewable energy source. This paper presents the characterization of rice husk ash (RHA) obtained under varying fluidization velocities (0.13-0.15 m/s) and rice husk feed (4.5-7.2 kg/h). Characterization techniques include X-ray fluorescence, X-ray diffraction, particle size distribution and scanning electron microscopy. For the employed range of fluidization velocities of rice husk feed no noticeable influence on the chemical composition of produced RHA was observed. After combustion, RHA containing ∼93% amorphous silica and <3% unburned char was obtained. RHA primary particles presented sizes from 90 to 100 μm and a tendency for agglomeration in aqueous media. Thus, the potential of this type of reactors with respect to speed, continuity and self-sufficiency energy of the process was shown.

    Idioma originalInglés
    Título de la publicación alojadaProceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008
    Páginas1613-1622
    Número de páginas10
    EstadoPublicada - 2008
    Evento2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 - Cancun, México
    Duración: 12 oct. 200815 oct. 2008

    Serie de la publicación

    NombreProceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008

    Conferencia

    Conferencia2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008
    País/TerritorioMéxico
    CiudadCancun
    Período12/10/0815/10/08

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