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Understanding the Difference Between Biodegradable and Compostable

In recent years, as environmental concerns have come to the forefront of global discussions, terms like "biodegradable" and "compostable" have become increasingly prevalent. While both are lauded as eco-friendly alternatives to traditional plastics and materials, there are significant differences between the two that are important to understand. In this blog post, we'll delve into what sets biodegradable and compostable apart and why it matters for our planet.

Biodegradable: Breaking Down Naturally

The term "biodegradable" refers to materials that can break down naturally over time, typically through the action of microorganisms like bacteria or fungi. These materials can decompose into natural elements such as carbon dioxide, water, and biomass, without leaving behind any harmful residues. Biodegradation occurs as a result of chemical reactions initiated by enzymes secreted by microorganisms, ultimately leading to the complete breakdown of the material.

One of the key points to note about biodegradable materials is that the process can occur in various environments, including landfills, oceans, and composting facilities. However, the rate of biodegradation can vary significantly depending on factors such as temperature, moisture, and the presence of oxygen. Some biodegradable materials may take months or even years to fully decompose, while others can break down relatively quickly.

Compostable: Returning to the Earth

On the other hand, "compostable" materials are specifically designed to break down into nutrient-rich compost in a composting environment. Composting is a controlled biological process that converts organic waste into humus-like material known as compost, which can then be used to enrich soil and support plant growth. Compostable materials undergo degradation by microorganisms under specific conditions of temperature, moisture, and aeration, ultimately transforming into compost within a matter of weeks to months.

Unlike biodegradable materials, compostable products must meet strict standards and certifications to ensure that they can fully break down into compost without leaving behind any harmful residues or toxins. These standards typically dictate the timeframe and conditions required for composting, as well as the permissible levels of heavy metals and other contaminants in the final compost.

Why It Matters

Understanding the distinction between biodegradable and compostable is crucial for making informed choices that align with sustainable practices. While both types of materials offer potential benefits in reducing waste and environmental impact, they are not interchangeable, and their effectiveness depends on proper disposal and management.

Biodegradable materials may provide a solution for reducing plastic pollution in landfills and oceans, but their efficacy can be limited by the conditions of the disposal environment. Improperly disposed biodegradable products may still contribute to litter and environmental harm if they do not break down as intended.

Compostable materials, on the other hand, offer a more targeted solution for organic waste management and soil regeneration. By diverting organic waste from landfills and turning it into nutrient-rich compost, compostable products support circular economy principles and contribute to sustainable food production and land management.

Conclusion

In conclusion, while both biodegradable and compostable materials offer potential benefits in mitigating environmental impact, they serve distinct purposes and undergo different degradation processes. Biodegradable materials break down naturally over time, while compostable materials are specifically designed to transform into compost under controlled conditions. By understanding the differences between these terms and their implications for waste management, consumers and businesses can make more informed choices that support a healthier planet for future generations.

Kaneka Has Biodegradable Solutions for Manufacturers

Kaneka Green Planet PHBH™ can replace common plastic products such as plates, straws, cups, film, pouches, cups, and cutlery. Our plant-based biopolymers are not only industrially compostable, but they are home-compostable and marine biodegradable as well! Contact us today for more information about Kaneka PHBH™ for your upcoming production. For more information, see our compostability/degradability disclaimer