Abstract:
The purposes of this research were to study fabrication process, quality, condition and adsorption capacity of activated carbon. This research is an experimental research started with carbonizing coffee grounds by burning in a confined space at 400 °C for 1 hour then using chemical activation by soaking in Sodium Chloride and Zinc Chloride Solution in 1:1, 1:2, 1:3, and 1:4 ratios for 2 hours. Afterwards, the coffee ground activated carbon was analyzed for moisture content, pH value, percentage of yield, heavy metal adsorption, and BET. The results found that the coffee ground activated carbon soaked in Sodium Chloride Solution in 1:3 ratio is the most effective condition compared to Zinc Chloride Solution. In addition, the moisture content of the coffee ground activated carbon increased by 15.02%; percentage of yield decreased by 85.29%; heavy metal adsorption increased by 99.99%; pH value decreased by 4.69%; and BET increased by 729 m2/g. Therefore, the fabrication of coffee ground activated carbon by using chemical activation can produce coffee ground activated carbon with the absorption value that has met the standard of TIS 900-2547.