Household organic waste, also known as bio-waste, refers to the fermentable portion of household waste, resulting mainly kitchen waste. Examples include fruit and vegetable peels, coffee grounds, leftover meals, and expired food (without packaging). Household wastes can be a great feedstock source for bioenergy generation through the biomethanisation process.
Towards optimal recycling
It is not recommended and often prohibited to send bio-waste to incinerators or to the landfill. Bio-waste is becoming collected more selectively, either in containers or in biodegradable bags. The sorting quality is very important. If non-organic waste is mixed with bio-waste, the biomethanisation process will not function optimally and the digestate may be contaminated.
In the future, new technologies for using bio-wastes will spread. It will be possible to produce “advanced” bioethanol or even to extract relevant molecules from these wastes.