Sofia Martinez
Compostable plastic is a type of plastic that is designed to break down under specific composting conditions. It is often made from plant materials, such as polylactic acid (PLA), and can be used for items like coffee cups, lids, bowls, and takeaway food packaging. While compostable plastic is a more environmentally friendly alternative to conventional plastic, it is important to note that it cannot be recycled in the same way. Compostable plastic should not be placed in recycling bins as it can contaminate other recyclable materials. Instead, it needs to be disposed of through composting, either at home or through industrial composting facilities, depending on the product's specifications. Improper disposal of compostable plastic can have negative environmental consequences, so consumers must be mindful of the correct methods for their specific products.
| Characteristics | Values |
|---|---|
| Recyclability | Compostable plastic cannot be recycled with mainstream recycling systems. |
| Compostable plastic is not accepted in curbside recycling collections. | |
| Compostable plastic cannot be recycled in the same way as plastic. | |
| Biobased plastics can be designed to be structurally identical to petroleum-based plastics, and if designed in this way, they can last in the environment for the same period of time as petroleum-based plastic. | |
| Some forms of biobased plastic cannot be recycled together with petroleum-based plastics due to chemical structure incompatibility. | |
| Other biobased plastics may have compatible chemical structures that allow for recycling together with petroleum-based plastics. | |
| Composting | Compostable plastic is designed to break down in very specific composting conditions. |
| Compostable plastic is designed to be broken down in a different way than recyclable packaging. | |
| Compostable plastic can be home compostable or industrial compostable. | |
| Industrial composting facilities have higher temperatures and different breakdown conditions than those found in a typical homeowner's compost bin. | |
| Compostable plastic can be disposed of through composting. | |
| Composting is lower down than recycling on the Waste Hierarchy. | |
| Compostable plastic can be composted in an industrial composting plant where conditions are carefully managed and controlled to ensure that compostable packaging turns into materials that can be safely used in agriculture, either as soil or plant fertiliser. | |
| Compostable plastic can be composted in a home garden composter. | |
| Compostable plastic can be composted in a commercial composting system. | |
| Compostable plastic can be composted in food waste bins if the local council sends food waste to an industrial composting facility. |
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What You'll Learn
- Compostable plastic is not recyclable but biodegradable
- Compostable plastic must be sent to an industrial composting facility
- Compostable plastic is designed to break down in specific conditions
- Biobased plastics can be biodegradable or compostable
- Compostable plastic is not accepted in curbside recycling collections
Compostable plastic is not recyclable but biodegradable
The American Society for Testing and Materials (ASTM International) sets definitions and standards for compostable plastic, while the Federal Trade Commission (FTC) is responsible for enforcement against false or deceptive product labelling. Compostable plastic products should bear the EN 13432L2000 seeding logo to go into a food waste bin. However, not all local councils will accept compostable packaging in food waste.
Compostable plastic products are often made from PLA (Polylactic Acid), a plastic derived from plant material. In the plastic code system, PLA is classified as an 'other plastic' and indicated by the number seven in the recycling symbol with the letters PLA. This means that PLA does not belong in the yellow recycling bin. Instead, it should be put in an organics collection bin for composting.
Composting is a simple and effective way to dispose of waste and protect the environment. In an industrial composting plant, conditions such as temperature, water, oxygen and carbon-nitrogen levels are carefully managed and controlled to ensure that compostable packaging breaks down into materials that can be safely used in agriculture, either as soil or plant fertiliser. However, it is important to note that improper disposal of compostable packaging can have the same irreparable impact on the environment as non-sustainable solutions.
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Compostable plastic must be sent to an industrial composting facility
Compostable plastic is designed to be broken down in a different way than recyclable packaging. It is important to know how to dispose of compostable plastic properly to avoid causing harm to the environment.
Compostable plastic should not be put in with your plastic recycling as it can't be recycled in the same way. It is designed to break down in very specific composting conditions. Therefore, it is important to check the packaging for labels as to its compostability and recyclability. If a packet is labelled as 'compostable' or 'compostable via industrial methods', it is very unlikely to break down in a home composter and will need to be sent to an industrial composting facility.
These industrial composting facilities have higher temperatures and different breakdown conditions than those found in a typical homeowner’s compost bin. The conditions are carefully managed and controlled to ensure that compostable packaging turns into materials that can be safely used in agriculture, either as soil or plant fertiliser. This includes the temperature, water, oxygen and carbon-nitrogen level, which allows microorganisms to break down compost piles quickly.
If your community has a residential compost collection program, check with your local government or recycling company to find out if they will accept compostable plastic under this program. If not, contact your garbage/recycling company or local government to find out if there are any drop-off locations for compostable plastic items.
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Compostable plastic is designed to break down in specific conditions
Compostable plastic is not recyclable and should not be put in with your plastic recycling as it is designed to break down in very specific composting conditions. The specific conditions required to break down compostable plastics are carefully managed and controlled in industrial composting plants. This includes temperature, water, oxygen, and carbon-nitrogen levels, which allow microorganisms to break down compostable materials quickly.
Compostable plastics can be either home compostable or industrial compostable. If a packet says it is 'fully home-compostable', it will break down in a home garden composter. However, if it is billed as 'compostable' or 'compostable via industrial methods', it will need to be sent to an industrial composting facility, which has higher temperatures and different breakdown conditions than a typical homeowner's compost bin.
In some cases, compostable packaging can be put in food waste bins, but only if the local council sends food waste to an industrial composting facility. It is important to check the product label for compostability and recyclability. The 'home compostable' and 'compostable' logos indicate that an item has been verified as compostable and will require the specific conditions of a commercial composting system to break down.
Compostable plastics are designed to be broken down differently from recyclable packaging, and they can fully decompose, helping to reduce the amount of waste that ends up in landfills. However, improper disposal of compostable packaging can have a negative impact on the environment, so it is important to dispose of compostable plastics correctly through composting rather than recycling.
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Biobased plastics can be biodegradable or compostable
The terms "biobased", "biodegradable", and "compostable" are often used interchangeably, but they have distinct meanings. Biobased plastics are made from plant materials or biological resources instead of oil or natural gas, while biodegradable and compostable refer to how a plastic product breaks down at the end of its life.
Biobased plastics can be designed to be structurally identical to petroleum-based plastics, and if designed in this way, they can last in the environment for the same period of time as petroleum-based plastic. However, biobased plastics can also be engineered to be biodegradable or compostable. Biodegradable plastics are able to be broken down into carbon dioxide, water, and biomass by the natural action of microorganisms over an unspecified length of time and in undefined conditions. Compostable plastics are a subset of biodegradable plastics that typically decompose in industrial composting facilities, but they can also be designed to be home compostable.
The ability of biobased plastics to be recycled varies. Some forms of biobased plastic cannot be recycled together with petroleum-based plastics due to chemical structure incompatibility, while other biobased plastics may have compatible chemical structures that allow for recycling together with petroleum-based plastics. Compostable plastics should not be put in with plastic recycling as they are designed to break down in very specific composting conditions rather than be recycled. In order to determine how to properly dispose of a biobased plastic item, it is necessary to read the product's label as to its compostability and recyclability.
There is widespread confusion among consumers about these different types of plastics, and the lack of federal standards and regulations for bioplastics has led to misleading marketing. Many consumers and businesses are trying to make environmentally responsible decisions and switch to bioplastics, but they may be replacing one harmful material with another. It is important to carefully evaluate any bioplastic product on a case-by-case basis to ensure that it is beneficial to the environment beyond the reduction in use of fossil resources.
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Compostable plastic is not accepted in curbside recycling collections
Compostable plastic is also not intended for recycling and can contaminate and disrupt the recycling stream if intermixed with petroleum-based plastics that are non-compostable. The ability of biobased plastics to be recycled varies. Some forms of biobased plastic cannot be recycled together with petroleum-based plastics due to chemical structure incompatibility. However, other biobased plastics may have compatible chemical structures that allow for recycling together with petroleum-based plastics.
It is necessary to read the product's label as to its compostability and recyclability. The American Society for Testing and Materials (ASTM International) sets definitions and standards, while the Federal Trade Commission (FTC) is responsible for enforcement against false or deceptive product labeling. Plastic that is labelled as compostable is generally intended to be sent to an industrial or commercial composting facility that has higher temperatures and different breakdown conditions than those found in a typical homeowner's compost bin.
If your community has a residential compost collection program, check with your local government or recycling company to find out if they will accept compostable plastic under this program. If your community does not have a composting recycling pick-up program that accepts compostable plastic, contact your garbage/recycling company or local government to find out if there are any drop-off locations for your compostable plastic items.
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Frequently asked questions
Compostable plastic is a type of plastic that is designed to break down in specific composting conditions. It is often used for takeaway food packaging and bags.
Compostable plastic cannot be recycled in the same way as conventional plastic. It is designed to be disposed of through composting. However, it is important to check the label, as some compostable plastics are designed to be composted at home, while others require the specific conditions of an industrial composting facility.
Compostable plastic will often have a "home compostable" or "industrial compostable" label. It may also have a logo indicating that it has been verified as compostable by a certification body, such as OK Compost or the Australian Bioplastics Association.
