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Silica extracted from agricultural bio-waste, such as rice husks, has emerged as a sustainable alternative to natural silica sources. This paper explores the potential of bio-silica as a cost-effective, environmentally friendly resource, focusing on its extraction and comprehensive characterization. Techniques such as X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), and Fourier-Transform Infrared Spectroscopy (FTIR) are employed to analyze the morphology, crystalline structure, elemental composition, and functional groups of the extracted silica. The study highlights the viability of rice husks (hulls) as a rich source of amorphous silica, suitable for advanced industrial applications including ceramics, catalysts, and composites. This research underscores the importance of utilizing agricultural waste for sustainable material development, reducing environmental impact while meeting the growing demand for high-quality silica.

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Natural Silica Extraction from Bio-Waste (Rice Husk) Using Activation Methods

  • 会议论文

  • 发表日期：

    2026年

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  • K. Rakesh,
  • P. S. C. Bose,
  • G. Raghavendra,
  • S. Ojha,
  • Satish Jain,
  • Dheeraj Kumar Gara

摘要

Silica extracted from agricultural bio-waste, such as rice husks, has emerged as a sustainable alternative to natural silica sources. This paper explores the potential of bio-silica as a cost-effective, environmentally friendly resource, focusing on its extraction and comprehensive characterization. Techniques such as X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), and Fourier-Transform Infrared Spectroscopy (FTIR) are employed to analyze the morphology, crystalline structure, elemental composition, and functional groups of the extracted silica. The study highlights the viability of rice husks (hulls) as a rich source of amorphous silica, suitable for advanced industrial applications including ceramics, catalysts, and composites. This research underscores the importance of utilizing agricultural waste for sustainable material development, reducing environmental impact while meeting the growing demand for high-quality silica.