Almost half of all household waste consists of organic refuse and food scraps from the kitchen. According to WRAP UK, household food waste makes up 70% of all food waste outside farms. Food waste that is thrown away ends up in landfill where it will break down to release methane, a greenhouse gas 25 times more potent than carbon dioxide. According to Which, every year almost 10.2 million tonnes of food waste is thrown away in the UK, with 7.1 million tonnes coming from households.
There are two ways to recycle food waste: anaerobic digestion and composting.
Anaerobic digestion occurs when food waste is broken down by microbes in an oxygen-free environment.
Microbes that need oxygen are used to break down food into compost. Food waste that is composted can be used to produce nutrient-rich soil for growing plants.
The BIEA Compost STEM Challenge asks young people between the ages of 6 and 18 to develop a composting system and reduce the amount of organic kitchen waste in their home or school.
You will begin by be measuring the amount of waste your household produces on average and producing charts to illustrate your findings. You will then make a simple composter to reduce the quantities of organic waste going into the landfill from your home.
To sign up to the BIEA Compost STEM Challenge, Please complete the registration form below.