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    • Silica gel from rice hull ash: preparation and characterization 

      Kamath, Savita R.; Proctor, Andrew (American Association of Cereal Chemists, Inc., 1998-07)
      Rice hulls, a waste coproduct of the rice industry, is composed of 20% silica. The objectives of this study were to develop a method to recover silica from rice hull ash and produce silica gel, and to determine the physical ...