Compostable vs Biodegradable – and what are microbeads?
We want to use materials which melt away into the earth and leave no toxic residue?
COMPOSTABLE – refers to the ability of a microbes in the presence of heat, moisture and oxygen to break down materials. Products that compost leaves no visible, distinguishable or toxic residue and generally help improve the soil. Compostable bags can be used to contain your organic food waste before disposal in your green organics bin – all food waste can be composted and turned into valuable mulch! Compostable bags (8 litre Biobag) are available from
- Alexandrina, Kangaroo Island and District Council of Yankalilla offices
- FRWA Waste and Recycling Depots – Goolwa and Strathalbyn
Biobags meet the Australian Standard (AS 4736 – 2006) which has the additional requirement of a set of eco-toxicity tests (worm test and plant growth test).
BIO -DEGRADABLE refers to the ability of a substance to break down into small enough pieces so that microorganisms can consume it. Given enough time, all products eventually biodegrade, but plastics for example take much longer. Since the production of plastic, there has been no evidence that plastic completely disappears back into our soil or waters which is why you will see many animals ingesting small plastic pieces. MICROBEADS are small, solid, manufactured plastic particles that are less than 5mm and don’t degrade or dissolve in water. They may be added to a range of products, including rinse-off cosmetics, personal care and cleaning products.
More Information ?
The Do Something Project has a great DL sized brochure which outlines the difference between COMPOSTABLE and BIODEGRADABLE – CLICK HERE TO DOWNLOAD
Jefferies Garden soils also has great diagram on their website which explains the COMPOSTABLE vs BIODEGRADABLE question – click here to link to Jefferies website