Activated Carbon Production from Coffee Waste via Slow Pyrolysis Using a Fixed Bed Reactor

Abstract Pyrolysis is a thermochemical process commonly used for bio-oil, bio-char, and syngas production. It particularly attractive due to its cost-effectiveness low environmental impact. Therefore, this study utilizes coffee waste produce activated carbon in slow pyrolysis reactor at different reaction temperatures residence times. The results obtained show that bio-oil yields tend increase when moderate short times are used. In contrast, the bio-char higher long Scanning Electron Microscopic (SEM) images of waste, indicate pore size tends decrease heating area after using ZnCl2 as activating agent. Coffee suitable feedstock