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Rice Husk Derived Adsorbents for Water Purification

  • S. K. Shukla
Chapter
Part of the Environmental Chemistry for a Sustainable World book series (ECSW, volume 38)

Abstract

Rice husk (RH) is an abundantly available, inexpensive agro waste with several industrially important chemicals and properties, such as composition, surface adsorption, strength, bulk density, calorific values, abrasion, etc. Therefore, it has been widely modified and used in different applications, including fuel for boilers, fillers in rubbers, fodder for animals, and a source of different materials, such as silica, silica carbide, cellulose, carbon nanotubes, and graphene. The porosity and adsorption of RH and its derived adsorbents have been explored in water purification. The effectiveness of water purification is based on morphology, structure, chemical composition, and surface area, which attracts scientists for innovation. Some of the RH derived materials explored for water purification are biochar, activated carbon, silica, and hydrogels, along with their merits and demerits. In the light of the above developments, the present chapter describes the RH as a source of adsorbent and its application in the removal of various pollutants from drinking water and wastewater. The properties and various methods used on RH to convert it into adsorbents are also discussed. The reported literature indicates that RH has enormous potential for water purification but several limitations need to be addressed. The hurdles and success story of the conversion and application of RH in water purification have been represented along with future challenges.

Keywords

Rice husk Chemical treatments Adsorbents Water purifications Biofilters 

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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • S. K. Shukla
    • 1
  1. 1.Department of Polymer Sciences, Bhaskaracharya College of Applied SciencesUniversity of DelhiDelhiIndia

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