1835% of food waste is unavoidable waste. It arises from food preparation or consumption and is not edible under normal circumstances. One such waste is spent coffee grounds, that can be seen not as waste, but a potential material resource.
In one year, about 9 million tons of coffee is consumed in the world. About 80% of it is left behind as waste. Coffee waste is comprised primarily of cellulose and other organic compounds. Materials of various properties are created by means of different biopolymers used to bind the coffee grounds. Additionally properties are further defined by drying method and finishing.
Ingredients
90% coffee grounds, 10% natural binder.
Method
Coffee waste is collected from Tallinn gas stations and cafes. The dried waste is mixed with a binder, pressed into a mold and dried in a freeze dryer. The material can be sawn and milled. If necessary, waterproofing could be provided.
Usage
The specific features of the material allow its ample usage in product development, for instance, as acoustic and insulation material as well as smaller design objects.
Author
Annika Kaldoja
Contact
annika.kaldoja@gmail.com
References
Võta ühendust
EKA Materjalikogu
materials@artun.ee
+372 5265956
Eesti Kunstiakadeemia
Kotzebue 1, Tallinn 10412
artun.ee