Skip to main content
SpringerLink
Log in

Determination of Silica Activity Index and XRD, SEM and EDS Studies of Amorphous SiO2 Extracted from Rice Husk Ash

  • Original Paper
  • Published:
Transactions of the Indian Institute of Metals Aims and scope Submit manuscript

Abstract

Rice husk ash (RHA) contains 20% SiO2 in hydrated amorphous form (Si–OH). On thermal treatment, the SiO2 converts to cristobalite, the crystalline form which is not reactive. However under controlled conditions, amorphous SiO2 with high reactivity is produced. Therefore rice husk has been one of the useful bio-mass. The silica activity index was determined to be equal to 97.73 which was used to determine the percentage of amorphous SiO2 in RHA. The values of the soluble fraction and silica activity index were also stated. Comparative study of amorphous and crystalline SiO2 done by X-ray diffraction revealed the total amorphous nature of SiO2. The scanning electron microscopy (SEM) images displayed the comparative morphological features of the rice husk and RHA. The energy dispersive spectroscopy analysis of rice husk was done to determine the presence of SiO2 on the upper portion of rice husk and to determine the percentage of SiO2 in RHA. The SiO2 particles in an agglomerated form was found to be of micron size when observed under SEM.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

References

  1. Conradt R, Pimkhaokham P, and Leela-Adisom U, J Non-Cryst Solids 145 (1992) 75.

    Article  CAS  Google Scholar 

  2. Real C, Alcala M D, and Criado J M, J Am Ceram Soc 87 (2004) 75.

    Article  CAS  Google Scholar 

  3. Shinohara Y, and Kohyama N, Indus Health 42 (2004) 277.

    Article  CAS  Google Scholar 

  4. Venezia A M, La Parola V, Longo A, and Martorana A, The First Workshop on the Utilization of Rice Husk and Rice Husk Silica, vol 161 (2001), p. 373.

  5. Mosungnoen W, Hemachandra K, and Jaroenworaluck A, The First Workshop on the Utilization of Rice Husk and Rice Husk Silica, September 19 (2005).

  6. Kalapathy U, Proctor A, and Shultz J, Bioresour Technol 85 (2002) 285.

    Google Scholar 

  7. Nair D G, Sustainable-Affordable Housing for the Poor in Kerala, PhD Thesis, Delft University of Technology (2006).

  8. Paya J, Monzo J, Borrachero M V, Mellado A, and OrdonÄez L M, Cem Concr Compos 28 (2006) 158.

    Google Scholar 

  9. Liou T H, Chang F W, and Lo J J, Mater Sci Eng A 364 (2004) 313.

  10. Deepa G N, Jagadish K S, and Fraaij A, Cem Concr Res 38 (2008), 861

    Google Scholar 

  11. Mosungnoen W, Hemachandra K, and Jaroenworaluck A, The First Workshop on the Utilization of Rice Husk and Rice Husk Silica, September 19 (2005).

  12. Sharma N K, Williams W S, and Zangvill A, J Am Ceram Soc 67 (1984) 715.

    Google Scholar 

  13. Krishnarao R V, and Godkhindi M M, Ceram Int 18 (1992) 243.

  14. Park B D, Wi S G, Lee K H, Singh A P, Yoon T H, Kim Y S, Biomass Bioenergy 25 (2003) 319.

Download references

Acknowledgment

The authors expresses thanks to the Institution of Engineers (India) for supporting the financial aid during this project under the grant SCK/T-R&D/96/2009-2010.

Author information

Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur, 440 010, Maharashtra, India

    Pallavi Deshmukh, Jatin Bhatt, Dilip Peshwe & Shailkumar Pathak

Authors
  1. Pallavi Deshmukh
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Jatin Bhatt
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Dilip Peshwe
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Shailkumar Pathak
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Pallavi Deshmukh.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Deshmukh, P., Bhatt, J., Peshwe, D. et al. Determination of Silica Activity Index and XRD, SEM and EDS Studies of Amorphous SiO2 Extracted from Rice Husk Ash. Trans Indian Inst Met 65, 63–70 (2012). https://doi.org/10.1007/s12666-011-0071-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12666-011-0071-z

Keywords

Search

Navigation