Biodegradable bags are designed to break down through natural processes. However, improper disposal can slow decomposition or even cause environmental harm. To ensure biodegradable bags break down efficiently and safely, it is important to understand where and how to dispose of them correctly.
1. Understand the Type of Biodegradable Bag You Have
Before disposal, check the packaging or product label to determine what type of biodegradable bag you are using:
a. Plant-Based Biodegradable Bags
Made from materials such as PLA, cornstarch, or PBAT. These break down faster and more naturally.
b. Oxo-Biodegradable Bags
Plastic bags with additives that help them fragment, but they may still leave microplastics. They should not go to compost.
c. Certified Compostable Biodegradable Bags
These carry certifications such as EN 13432 or ASTM D6400 and are safe for composting.
Correct disposal depends heavily on which category your bag falls into.
2. Dispose of Certified Compostable Biodegradable Bags in Composting Systems
If the bag is labeled “compostable” and certified, it can be processed in:
a. Industrial Composting Facilities
Industrial composting provides high heat, moisture, and microbial activity.
This is the best place for certified compostable bags.
To use this option:
Check local compost pickup programs
Drop off at municipal green waste centers
Confirm that the facility accepts compostable plastics
b. Home Composting (If the Bag Is Home-Compost Certified)
Only bags labeled “Home Compostable” should go into your backyard compost bin.
For best results:
Cut the bag into smaller pieces
Mix with food scraps, leaves, and moisture
Turn the compost regularly
Home composting typically takes longer than industrial composting.
3. Use Biodegradable Bags for Food Waste Collection
If allowed in your area, biodegradable or compostable bags can be used to collect:
Kitchen waste
Fruit and vegetable scraps
Coffee grounds
Yard waste
Then the entire bag can be placed into the organic waste bin. Many municipalities require certified compostable bags for organic collection.
4. Do Not Throw Biodegradable Bags in Regular Plastic Recycling Bins
Biodegradable bags do not belong in plastic recycling streams.
They can:
Contaminate recyclable plastics
Reduce the quality of recycled material
Cause issues in sorting equipment
Recycling facilities are not designed to process biodegradable or compostable materials.
5. Avoid Disposing of Biodegradable Bags in Landfills
Although biodegradable bags will eventually break down in nature, landfill conditions are different:
Limited oxygen
Low microbial activity
Dry environments
In landfills, biodegradable bags may not decompose efficiently, sometimes lasting as long as conventional plastics.
Whenever possible, choose composting over landfill disposal.
6. Do Not Litter Biodegradable Bags
“Biodegradable” does not mean the bag will disappear quickly in outdoor environments.
If left in nature:
They can take months or years to break down
Harm wildlife
Leave behind fragments
Cause pollution before decomposing
Always dispose of biodegradable bags responsibly.
7. Check Local Waste Regulations
Waste management rules vary widely by country and municipality.
Look for information on:
Composting facilities that accept compostable bags
Curbside organic waste programs
Approved types of biodegradable bags
Restrictions on oxo-biodegradable plastics
When in doubt, contact your local waste authority.
Proper disposal of biodegradable bags ensures they break down as intended and reduce environmental impact. The best method is:
• Compost if the bag is certified compostable.
• Use industrial composting facilities for faster, complete decomposition.
• Do not place biodegradable bags in recycling or litter them outdoors.
By following these guidelines, consumers and businesses can make biodegradable bags an effective part of sustainable waste management.
