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Cloud Point Extraction

  • Sourav Mondal
  • Mihir Kumar Purkait
  • Sirshendu De
Chapter
Part of the Green Chemistry and Sustainable Technology book series (GCST)

Abstract

Phase separation of a surfactant-loaded solution happens beyond a certain critical thermodynamic state (known as the cloud point), separating the hydrophobic-rich phase in a nonpolar microenvironment from the aqueous supernatant. The dye molecules are bounded to the surfactant and subsequently separated by changing the environmental factor (temperature is commonly altered in cloud point extraction) beyond the cloud point. This is a popular extraction method in bioseparations but is also applicable for purification of dye solution. The chapter discusses the effect of the various operating conditions and different surfactants on extracting clear water from the dye solution with this technology.

Keywords

Cloud point extraction Congo red Eosin dye Chrysoidine Surfactant recovery 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Sourav Mondal
    • 1
  • Mihir Kumar Purkait
    • 2
  • Sirshendu De
    • 3
  1. 1.Mathematical InstituteUniversity of OxfordOxfordUK
  2. 2.Department of Chemical EngineeringIndian Institute of Technology GuwahatiGuwahatiIndia
  3. 3.Department of Chemical EngineeringIndian Institute of Technology KharagpurKharagpurIndia

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