Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6972678 | Journal of Hazardous Materials | 2011 | 6 Pages |
Abstract
An environmentally friendly and economically effective process to produce silica and activated carbon form rice husk ask simultaneously has been developed in this study. An extraction yield of silica of 72-98% was obtained and the particle size was 40-50Â nm. The microstructures of the as-obtained silica powders were characterized by X-ray diffraction (XRD) and infrared spectra (IR). The surface area, iodine number and capacitance value of activated carbon could achieve 570Â m2/g, 1708Â mg/g, 180Â F/g, respectively. In the whole synthetic procedure, the wastewater and the carbon dioxide were collected and reutilized. The recovery rate of sodium carbonate was achieved 92.25%. The process is inexpensive, sustainable, environmentally friendly and suitable for large-scale production.
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Authors
Yan Liu, Yupeng Guo, Yanchao Zhu, Dongmin An, Wei Gao, Zhuo Wang, Yuejia Ma, Zichen Wang,