Abstract:
The aim of this study was to analyze the adsorption efficiency of activated jackfruit
seeds powder and carbon to remove crystal violet in solution. Jackfruit seeds carbon
made by carbonization at 400℃ for 3 hour. Jackfruit seed powder and carbon were
activated with 0.3 M nitric acid (HNO3) with adsorption efficiency tested by varying the
adsorbent doses (0.1, 0.3, 0.5, 0.7 and 0.9 g) and optimum contact times (30, 60, 90,
120, 150, 180 and 210 minutes) which were analyzed using a UV-Vis
Spectrophotometer instrument. The adsorbent samples were also characterized for their
surface morphology using SEM instruments and functional group determination
analysis using FTIR instruments. The results showed that the adsorption efficiency of
HNO3 activated jackfruit seed powder to remove crystal violet was achieved at a dose of
0.7 g and a contact time of 90 minutes with an efficiency of 97.50%, while the jackfruit
seed carbon was at a dose of 0.5 g and a contact time of 180 minutes with an efficiency
of 60.08%. Based on the research that has been done, it can be seen that activated
jackfruit seeds powder have the better potential and effectiveness to remove crystal
violet dye in solution than activated jackfruit seeds carbon.
