User:Douglas M. Fox/Notebook/AU CHEM-581 F2012 Lab Support/2014/08/04

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Clay separation

  • Suspended clay solution during adsorption
  • Used Adams compact centrifuge (3000 rpm) for 5 min
  • good for most clays, except HdPh3P-MT (floated) & NaMT (clay still suspended)
  • Filtered all but NaMT through 0.45 μm syringe filter
  • NaMT still looked unexpectedly dark
  • Centrifuged NaMT at 13,000 rpm for 10 min using 8 1.5 mL vials
  • Then, filtered through 0.2 μm syringe filter

8 ppm MG Adsorption

  • Repeated experiment for all clays and NaMT/PVOH using 8ppm MG stock solution
  • see 8/1 for procedure
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