English, Article edition: STABILITY OF COLLOIDAL ALUMINA DISPERSION IN AQUEOUS ALKYL SULFATE SOLUTIONS SHAOXIAN SONG; YIMIN ZHANG

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Physical Description
  • article
Language
  • English

Edition details

Title
  • STABILITY OF COLLOIDAL ALUMINA DISPERSION IN AQUEOUS ALKYL SULFATE SOLUTIONS
Author
  • SHAOXIAN SONG
  • YIMIN ZHANG
Physical Description
  • article
Notes
  • Coagulation of colloidal alumina in aqueous solutions in the absence or presence of alkyl sulfates has been studied by means of measurements of electrokinetics, adsorption, and coagulate size in this work. The experimental results showed that the coagulation of colloidal alumina in aqueous alkyl sulfate solutions was much stronger than that in aqueous electrolytic solutions. It closely correlated with particle hydrophobicity rendered by the adsorption of alkyl sulfate anions on alumina/​water interfaces, indicating hydrophobic coagulation. Also, it has been found that the hydrocarbon chain length of alkyl sulfate strongly influences the hydrophobic coagulation. The longer the chain, the stronger the coagulation and the lower the alkyl sulfate concentration needed for achieving the maximum coagulation degree.
  • Colloidal alumina, hydrophobic coagulation, alkyl sulfates, adsorption
  • RePEc:wsi:srlxxx:v:14:y:2007:i:03:p:395-401
Language
  • English
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