Dispose of Compostable Garbage Bags for Home and Industrial

How to Dispose of Compostable Garbage Bags (Home vs. Industrial Composting)

If compostable garbage bags are designed to break down naturally, can they simply be thrown away like regular waste?

This is a common and understandable question among households and businesses adopting more sustainable waste practices. While compostable garbage bags and biodegradable garbage bags are marketed as environmentally friendly alternatives, their effectiveness depends heavily on how and where they are disposed of.

This article explains the correct disposal methods for compostable bags, clarifies the differences between home composting and industrial composting, and outlines best practices to ensure these products deliver their intended environmental benefits. 

By understanding these distinctions, users can avoid common mistakes and make more responsible choices.

Understanding Compostable Garbage Bags

A compostable garbage bag is designed to break down into natural components—water, carbon dioxide, and biomass—under specific composting conditions, without leaving toxic residues.

Unlike conventional plastic bags, compostable bags are typically made from plant-based materials such as:

  • Corn starch
  • Sugarcane fibre
  • PLA (polylactic acid)
  • Other renewable biopolymers

However, “compostable” does not mean “disposable anywhere.” Proper conditions are essential for decomposition to occur as intended.

Compostable vs Biodegradable Garbage Bags: Key Differences

Although often used interchangeably, compostable bags and biodegradable garbage bags are not the same.

Compostable Bags

  • Break down fully into non-toxic components
  • Require specific temperature, moisture, and microbial activity
  • Certified under recognised compostability standards

Biodegradable Garbage Bags

  • Break down over time, but not always completely
  • May fragment into microplastics
  • Decomposition rate varies widely depending on environment

Understanding this distinction is critical when choosing disposal methods.

Why Proper Disposal Matters

Improper disposal of compostable garbage bags can:

  • Prevent proper decomposition
  • Contaminate recycling streams
  • Undermine composting systems
  • Reduce environmental benefits

For compostable bags to fulfil their purpose, they must be disposed of in suitable composting environments.

What Is Home Composting?

Home composting typically involves backyard compost bins or compost heaps managed by households. These systems rely on natural microbial activity and usually operate at lower temperatures than industrial facilities.

Typical Conditions in Home Composting

  • Temperatures below 40°C
  • Slower microbial activity
  • Variable moisture and aeration

Because of these limitations, not all compostable garbage bags are suitable for home composting.

Home Compostable vs Industrial Compostable Bags

Not all compostable bags are created equal.

Home Compostable Bags

  • Designed to break down at lower temperatures
  • Decompose more slowly
  • Suitable for backyard compost systems

Industrial Compostable Bags

  • Require higher temperatures (above 55–60°C)
  • Need controlled humidity and microbial conditions
  • Not suitable for home composting

Always check product certification to determine which category a compostable bag falls into.

How to Dispose of Compostable Garbage Bags in Home Composting

If a compostable bag is certified for home composting, follow these best practices:

1. Confirm Home Compostability Certification

Look for labels indicating suitability for home composting rather than industrial-only composting.

2. Use for Organic Waste Only

Compostable bags should contain:

  • Food scraps
  • Vegetable peels
  • Coffee grounds
  • Garden waste

Avoid placing non-compostable materials inside the bag.

3. Tear or Cut the Bag Before Composting

Breaking the bag into smaller pieces increases surface area and accelerates decomposition.

4. Maintain Proper Compost Conditions

Ensure:

  • Balanced green and brown waste
  • Adequate moisture
  • Regular turning for aeration

Even home-compostable bags may take several months to fully decompose.

Common Mistakes in Home Composting

Many users unintentionally reduce composting effectiveness by:

  • Adding industrial-only compostable bags to home compost
  • Expecting rapid decomposition
  • Overloading compost bins with bagged waste

Understanding compost limitations helps manage expectations and results.

What Is Industrial Composting?

Industrial composting facilities operate under tightly controlled conditions that accelerate decomposition.

Typical Industrial Composting Conditions

  • High temperatures (55–70°C)
  • Controlled moisture and oxygen levels
  • Active microbial management

These facilities are designed to break down compostable packaging efficiently and safely.

How to Dispose of Compostable Bags via Industrial Composting

1. Check Local Waste Collection Guidelines

Not all municipalities accept compostable bags, even if they are industrially compostable.

2. Separate Compostable Waste Correctly

Place compostable garbage bags only in designated organic waste bins if allowed.

3. Avoid Mixing With Recycling or General Waste

Compostable bags can contaminate recycling streams if incorrectly sorted.

4. Follow Council or Facility Instructions

Compliance ensures bags are processed correctly and do not disrupt operations.

Why Compostable Bags Do Not Belong in Landfills

When compostable garbage bags end up in landfills:

  • Lack of oxygen slows decomposition
  • Methane gas may be produced
  • Environmental benefits are significantly reduced

Landfills are not designed for composting, making correct disposal essential.

Can Compostable Bags Be Recycled?

No. Compostable bags should never be placed in recycling bins. Their material composition differs from conventional plastics and can contaminate recyclable plastics during processing.

Choosing the Right Compostable Garbage Bag

When selecting compostable bags, users should consider:

  • Intended disposal method (home or industrial composting)
  • Certification standards
  • Waste type and volume
  • Local waste management infrastructure

Matching the bag type to available disposal options ensures effective use.

Educating Households and Businesses

Proper disposal relies on awareness. Suppliers and users share responsibility for:

  • Clear labelling
  • Disposal instructions
  • Understanding local composting capabilities

Education prevents misuse and supports broader sustainability goals.

The Role of Compostable Bags in Waste Reduction

Compostable bags are not a standalone solution. Their effectiveness depends on:

  • Correct usage
  • Responsible disposal
  • Integration with composting systems

When used properly, they support organic waste diversion and reduce reliance on conventional plastics.

Looking Ahead: Improving Composting Infrastructure

As composting facilities expand, disposal options for compostable bags may improve. Collaboration between suppliers, waste operators, and policymakers will be key to:

  • Standardising acceptance criteria
  • Improving public understanding
  • Maximising environmental impact

Conclusion

Compostable garbage bags offer meaningful environmental benefits—but only when disposed of correctly. Understanding the difference between home composting and industrial composting is essential to ensure compostable and biodegradable garbage bags decompose as intended.

By checking certifications, following proper disposal practices, and aligning bag choice with available composting infrastructure, households and businesses can make compostable bags a truly sustainable part of their waste management strategy. 

Responsible use ensures that these products contribute positively to waste reduction rather than becoming another misunderstood alternative.

Discover compostable and biodegradable garbage bag solutions designed for responsible disposal—explore our range at Teong Chuan.