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
Publicado de forma externa
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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