期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：7
页码：2936
出版社：S&S Publications
摘要：A simple method based on alkaline extraction followed by acid precipitation and acid dissolution has beendeveloped to produce pure amorphous silica from perlite. The reaction parameters such as molar ratio of NaOH/SiO2,reaction time and reaction temperature are varied for obtaining maximum silica conversion. About 70.6 % pureprecipitated silica from perlite has been achieved in closed system at 120 ºC within 60 min. XRF, BET surface area,XRD, FTIR and SEM techniques are used to characterize the physico-chemical attributes of materials. The presentresearch includes a cost benefit process under optimized conditions for produce wealth out of waste.
