Beads formation with 30% clay
- Making the solution of 1.25 g PVOH, 17.325 mL of 3wt% clay, 15 mL 12.1M HCl, 22.675 mL of H2O
- Mass of PVOH: 1.2502 g
- Mass of clay: 1.25/7*3 = 0.5357 g
- Volumn of clay: 0.5357*100/3 ~ 17.321 mL ~ Measured: 17.325 mL
- Volumn of HCl: 15 mL
- Volumn of water: 55 - 17.325 - 15 = 22.675 mL
- Repeat following this protocol
- Higher stirring speed required
Beads formation with 40% clay
- Making solution of 1.25 g PVOH, 27 mL bentonite 3wt%, 15 mL HCl, 13 mL H2O
- Mass of PVOH: 1.2506 g
- Volumn of bentonite solution: 27 mL
- Mass of clay needed: 1.25/6*4 = 0.8333 g
- Volumn of bentonite 3wt% needed: 0.8333*100/3 = 26.944 mL ~ 27 mL
- Volumn of HCl: 15 mL
- Volumn of water: 55 - 15 - 27 = 13 mL
- Repeat following this protocol
- Higher stirring speed required
Putting beads in column
- Weighing the columns (data from Dominique's notes)
Column Volumes (g)
|
Activated Carbon
|
10%
|
Empty Dry with Clamp
|
20.1234
|
20.1105
|
Clamp
|
4.13733
|
4.1437
|
Empty Dry
|
15.98607
|
15.9668
|
Empty Wet
|
16.38975
|
16.3416
|
Beads in Column with Clamp
|
22.3344
|
21.95
|
Column with Beads
|
18.19707
|
17.8063
|
Beads
|
1.8075
|
1.4647
|
Note
- It's important to keep the molar equivalence of HCl in the beads constant.
|