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Effect of thermal and chemical treatments on carbon and silica contents in rice husk

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Abstract

Thermal treatment of rice husk has been conducted up to 1000° C in air, oxygen, argon and non-oxidizing atmospheres. Chemical treatments consisted of HCI, H2SO4, HNO3, NaOH and NH4OH. Purity, particle size distribution and SEM micrographs of chemically treated samples are presented. Carbon and SiO2 contents in rice husk, coked at different temperatures and time, have been determined to show that a C : SiO2 ratio of 2:1, required for the production of solar grade silicon, can be achieved at low temperature. SiO2 of 99% purity can be obtained by acid leaching. The results have been interpreted in terms of two types of bonding of silicon, a rigid structural framework, and selective sites for the preferential attack of acid and alkali in rice husk.

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References

  1. A. Karera, S. Nargis, S. Patel andM. Patel,J. Sci. Ind. Res. 45 (1986) 441.

    Google Scholar 

  2. L. P. Hunt, J. P. Dismukes andJ. A. Amick,Proc. Electrochem. Soc. (1981) 81.

  3. J. A. Amick,J. Electrochem. Soc. 129 (1982) 864.

    Google Scholar 

  4. H. D. Banerjee, H. N. Acharya andS. K. Dutta,Mater. Lett. 2 (4A) (1984) 265.

    Google Scholar 

  5. H. D. Banerjee, S. Sen andH. N. Acharya,Mater. Sci. Eng. 52 (1982) 173.

    Google Scholar 

  6. M. Patel, C. B. Raju, A. K. Ray andA. Karera, Indian Patent filed No. 1 NP/91/85/Pat. (1985).

  7. S. B. Hana, N. A. L. Mansour, A. S. Tara andH. M. A. Abdallah,Br. Ceram. Trans. J. 84 (1985) 18.

    Google Scholar 

  8. F. C. Lanning,J. Agric. Food Chem. 11 (1963) 435.

    Google Scholar 

  9. C. Sterling,Amer. J. Bot. 54 (1967) 840.

    Google Scholar 

  10. S. L. Liu andC. H. Ho,J. Chin. Chem. Soc. 6 (1960) 41.

    Google Scholar 

  11. J. I. Martin, MS thesis, Louisiana State University (1938).

  12. N. K. Sharma, S. Williams andA. Zangwil,J. Amer. Ceram. Soc. 67 (1984) 715.

    Google Scholar 

  13. J. H. Cheng andLungwei, in Proceedings of CIMME Annual Convention, Miaoli, Taiwan, December 1979 p. 105.

  14. M. Patel,X-ray Spectrometry 10 (2) (1981) 82.

    Google Scholar 

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Authors and Affiliations

  1. Regional Research Laboratory (CSIR), 462 026, Bhopal, India

    M. Patel, A. Karera & P. Prasanna

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  1. M. Patel
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  2. A. Karera
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  3. P. Prasanna
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Patel, M., Karera, A. & Prasanna, P. Effect of thermal and chemical treatments on carbon and silica contents in rice husk. J Mater Sci 22, 2457–2464 (1987). https://doi.org/10.1007/BF01082130

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  • DOI: https://doi.org/10.1007/BF01082130

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