Silicon is a very important element in our natural life and industrial area. We can collect/ extract it from nature. Rice husk also contains silicon. But how can we extract silicon from rice husk?
Dear Md. Abul Kalam Azad many thanks for this very interesting technical question. As you said, Silicon is a very important element in daily life as well as in industry. Thus the extraction of silicon from rice husk is an interesting research topic. In addition to the useful references already provided by Arvind Singh and Nirmala S.V.S.G please also have a look at the following potentially useful articles entitled
1. Extraction, synthesis and characterization of nanosilica from rice husk ash
Article Extraction, synthesis and characterization of nanosilica fro...
2. Preparation of Silicon from Rice Husk as Renewable Energy Resource by the Use of Microwave Ashing and Acid Digestion
Article Preparation of Silicon from Rice Husk as Renewable Energy Re...
3. Extraction and characterization of silica from rice husk for use in food industries
Article Extraction and characterization of silica from rice husk for...
The first two articles are freely available as public full texts on ResearchGate.
Yes simply, just follow the procedure.
Silica gel is a synthetic silica compound that can be extracted from rice husk ash by the sol-gel method. Silica is removed from residual ash in the form of sodium silicate, and in a later stage of the process, treatment with acid converts the silica into gel.
Dear Farhan Ahmad please allow me the friendly remark that you should always cite the source when you copy-and-paste your answer to a technical question form the general internet or a research article. Otherwise it could be regarded as plagiarism!
Here is the link form which your answer was plagiarized:
Production of silica gel from residual rice husk ash
Article Production of silica gel from residual rice husk ash
In the Introduction of this article it is stated: "Silica gel is a synthetic silica compound that can be extracted from rice husk ash by the sol-gel method. Silica is removed from residual ash in the form of sodium silicate, and in a later stage of the process, treatment with acid converts the silica into gel."
It' s very easy to avoid this kind of plagiarism. Just cite the original reference to make your answer really valuable! 👍
P.S. Please also be invited to provide your valuable answer to the following RG thread entitled
How to detect and avoid plagiarism in answers on this platform?
https://www.researchgate.net/post/How_to_detect_and_avoid_plagiarism_in_answers_on_this_platform
The most widely used method for obtaining silica from rice husks is direct combustion, resulting in the production of rice husk ash, which contains 85–95% silica https://www.mdpi.com/2071-1050/12/24/10683/pdf
...distilled water. NaOH (to make wet all ash by caustic soda). This involves the digestion of the rice husk ash with caustic at specific conditions. In this process the silica in the ash gets extracted with caustic to form sodium silicate solution. http://www.ijerd.com/paper/vol12-issue3/Version-2/H12326974.pdf
Check https://iopscience.iop.org/article/10.1088/1755-1315/309/1/012032/pdf
You may look at below
https://www.academia.edu/9116091/extraction_of_silica_from_rice_husk
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