Activated charcoal is obtained from coffee grounds
After processing coffee grounds at high temperatures UNal researchers produced activated charcoal briquettes (biomass similar to traditional firewood) to ignite fire.Medellín, 08 de abril de 2015 — Agencia de Noticias UN-
From coffee grounds researchers have obtained activated charcoal liquid smoke and essences. Photos: Mónica Escobar/Unimedios.
UNal-Medellín Science and Technology master’s Fernando Arenas obtained activated charcoal, essences and tars, all valuable industrial byproducts.
Arenas processed coffee grounds with a machine designed at the UNal Fruit and Vegetable Laboratory. This machine has a kind of metallic cylinder covered by a high-temperature casing which heats the residues.
Depending on the temperature reached it is possible to obtain tar and liquid smoke used for bacon processing, for instance.
One of the most important products obtained by Arenas is activated charcoal. Briquettes with the activated charcoal impregnated with other chemical products area also useful for aromatizing environments.
Activated charcoal is produced and sold in form of pills to trap toxins in the body or for masks to help trap toxic gases. Data shows that activated charcoal can attract and capture all types of toxins in an environment up to 200 mts (656 ft) around.
“Activated charcoal the size of a sugar cube (0.06 in3) has ten meters (32 ft) of linear channels. When it heats it attracts elements that are around such as foul odors in a refrigerator,” said Arenas. Precisely that is why it is used to manufacture extractor grilles.
Beside coffee waste, researchers have also worked obtaining byproducts from orange and passion fruit peelings and coconut husks.(Por: Fin/ME/DMH/DAL