User:Tamanika Tinsley/Notebook/Chem 581 Biomaterials Design Lab/2014/11/14

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Nov 14 -Activated Carbon Objective Perform an experiment to determine the kinetics of the absorption of Malachite Green by Activated Carbon. Description Preparation of Malachite Green solution by James .0996 g of MG in 500 mL of water UV-Vis calculated concentration: 146 ppm 136.75 mL of 146 ppm in 1000 mL UV-Vis calculated concentration: 23.3 ppm Activated Carbon vs. 10mL 23.3 ppm Malachite Green 10 mL of 23.3 ppm MG are added to .01 g of activated carbon for a certain period of time. after the period of time has passed, the solution is filtered from the activated carbon using a vacuum filter. UV-Vis spectra are recorded to calculate the amount of MG absorbed in the given amount of time. Time intervals: every 15s for the first two minutes, followed by every 30 seconds for the next two minutes, followed by every minute up to 7 minutes Each time interval was done in a separate scintillation vial because the experiment proceeds too quickly to simply sample a single solution repeatedly. Data The calculated concentration of the MG used was 20.97 PPM The tables shows the weights of activated carbon for each time period. The graph that follows was created using previously-made calibration curves for the concentration of Malachite Green in solution using UV-Vis Spectrometry: