User:Jamie Nunziata/Notebook/Biomaterial Design 2016/2016/10/19

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Objective Today's objective includes the following: Prepare stock solutions of heavy metals for later testing with bentonite beads Continue testing the 30% and 40% beads Make 60% beads Protocol Heavy metal stock solutions We prepared the following stock solutions for bead testing: 10 mL of 100 ppm of Zn 10 mL of 100ppm Cu 10 mL of 100 ppm Note: These heavy metals can be tested because they are cations and will be attracted to our beads, which are anions. Arsenic, for example, can not be used with bentonite beads because it would be anionic and would not be attracted to our beads because they are also negatively charged. Testing the 30% and 40% sln bentonite beads The 30% (sln) and 40% bentonite beads were tested using the same method as that from before. 60% PVA/bentonite bead synthesis The synthesis of 60% bentonite beads was prepared using the same procedure from the 21st using the following reagents: 50mL of 3% by weight bentonite solution, 18.74mL of conc. HCL, 2.26mLs of DI water.