User:Lymperopoulos Loukas/Notebook/Experimental Chemistry/2016/09/16: Difference between revisions
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*The solution was centrifuged for 1 minutes at 3000 rpm. | *The solution was centrifuged for 1 minutes at 3000 rpm. | ||
*The liquid was pipetted out of the tubes and replaced with DI water to store. | *The liquid was pipetted out of the tubes and replaced with DI water to store. | ||
''Preparing bead columns'' | ''Preparing bead columns'' | ||
<br>A dry column and cap were initially weighed. Then, water was eluted through the column, the outside was patted dry, and the wet column and cap were then weighed again. To pack the beads into the column, the solutions of DI water and 10% clay composite beads were eluted through the column, allowing the beads to catch on the bottom. If air bubbles formed, the columns were inverted and shaken with some water. This was repeated until the level of packed beads came up to about one third to half way up the column. The beads were then dried by allowing all of the water to finish eluting from the column. The column was then patted dry, and weighed once more. This process was epeated with a new column and the charcoal beads. After both columns have been assembled, water was added to the columns so the beads would not dry out and they were stored for next class. | <br>A dry column and cap were initially weighed. Then, water was eluted through the column, the outside was patted dry, and the wet column and cap were then weighed again. To pack the beads into the column, the solutions of DI water and 10% clay composite beads were eluted through the column, allowing the beads to catch on the bottom. If air bubbles formed, the columns were inverted and shaken with some water. This was repeated until the level of packed beads came up to about one third to half way up the column. The beads were then dried by allowing all of the water to finish eluting from the column. The column was then patted dry, and weighed once more. This process was epeated with a new column and the charcoal beads. After both columns have been assembled, water was added to the columns so the beads would not dry out and they were stored for next class. |
Revision as of 14:52, 24 October 2016
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ObjectiveToday's objective was to repeat the bead procedure from February 14th, but instead of making a bead composite of 10% bentonite we made beads for 10% charcoal. We also tested our dried film from last week using XRD. ProtocolSynthesis of Charcoal beads
Preparing bead columns
Prepping of XRD samples
ObservationsWhen packing the columns, it was easiest to scoop out some of the larger chunks that weren't beads, elute out some water, and pour a more concentrated slurry of beads into the column to save time when packing in the beads.
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