How to Recycle PLA [Top Tips for Effective Reuse]

As environmental awareness grows, so does the emphasis on finding sustainable solutions for plastic waste. One promising material at the forefront of eco-friendly alternatives is PLA or Polylactic Acid. 

PLA is a biodegradable and compostable plastic derived from renewable resources like cornstarch or sugarcane. Its unique properties have made it an attractive choice for various applications, including packaging, food containers, and 3D printing.

Recycling PLA presents a significant opportunity to reduce our dependence on traditional petroleum-based plastics and minimize the environmental impact of plastic waste. 

In this guide, we will explore the steps involved in recycling PLA, from collection and cleaning to the different recycling methods available. By understanding how to recycle PLA properly, we can contribute to a more sustainable future and support the circular economy.

Whether you’re an individual looking to recycle PLA at home or a community seeking to implement recycling initiatives, this guide will equip you with the knowledge needed to responsibly manage PLA waste and promote environmental stewardship. 

The PLA Problem

The PLA problem refers to the challenges and complexities associated with the use and disposal of Polylactic Acid (PLA) plastics.

While PLA is often marketed as a more environmentally friendly alternative to traditional petroleum-based plastics, it still presents a set of issues that need to be addressed:

  1. Limited Recycling Infrastructure: PLA recycling facilities are not as widespread or well-developed as those for traditional plastics, leading to significant PLA waste ending up in landfills or incinerators.
  1. Contamination Issues: PLA is visually similar to other plastics, causing it to contaminate recycling streams. Mixed PLA with other plastics lowers the recycled material quality and hinders the recycling process.
  1. Biodegradability Concerns: PLA’s biodegradability depends on specific conditions like high heat and moisture in industrial composting facilities. In regular landfills, PLA may not decompose as expected, causing confusion and potential environmental problems.
  1. Land Use and Feedstock Impact: PLA is made from renewable resources like corn or sugarcane, raising concerns about their use competing with food production or contributing to deforestation and land-use changes.
  1. Energy and Resource Consumption: While PLA has a lower carbon footprint than traditional plastics, its production still requires energy and resources, potentially offsetting its biodegradability benefits.
  1. Litter and Marine Pollution: If PLA products enter the environment, they can contribute to litter and marine pollution, as they take a long time to degrade naturally, posing risks to wildlife and ecosystems.

Despite the challenges associated with recycling PLA, there are still significant benefits to be gained from its recycling:

  1. Environmental Impact Reduction: Decreases reliance on petroleum-based plastics, reducing greenhouse gas emissions and conserving fossil fuel resources.
  1. Resource Conservation: Conserves raw materials like corn or sugarcane, promoting more sustainable use of natural resources.
  1. Waste Reduction: Minimizes plastic waste in landfills and incinerators, easing the strain on waste management systems.
  1. Circular Economy Promotion: Fosters a closed-loop approach, reusing or upcycling materials to reduce the need for new raw materials.
  1. Innovation and Creativity: Encourages creative uses for PLA through upcycling, leading to unique and valuable products.
  1. Consumer Awareness: Raises awareness of sustainable practices and responsible waste management among consumers.
  1. Market Incentives: Drives investment and research in improving PLA recycling infrastructure and technologies.
  1. Community Engagement: Involves communities in environmental initiatives, fostering a sense of responsibility for the planet.

To address the PLA problem effectively, we must focus on improving recycling infrastructure, better labeling PLA products, promoting responsible waste management, and advancing research and development for more efficient and sustainable production and recycling.

Considering PLA’s entire life cycle and its environmental impact is crucial to ensure it becomes a genuine solution to the global plastic waste issue.

PLA problem
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How to Recycle PLA 3D Prints into Up-cycled Products?

Recycling PLA 3D prints into upcycled products is an excellent way to give new life to the material and reduce waste. 

Upcycling involves creatively transforming used items into higher-value products, reducing the need for raw materials, and minimizing environmental impact. 

To recycle PLA 3D prints into upcycled products, follow these steps:

#Collect and Clean: Gather used PLA 3D prints and clean them thoroughly to remove dust and debris.

#Evaluate and Design: Assess the prints’ condition and plan upcycling projects based on their size and shape.

#Choose Projects: Decide on upcycling projects like keychains, coasters, or decorative items that suit the available prints.

#Modify Prints (if needed): Cut, shape, or combine prints to fit the desired upcycled product.

#Combine with Other Materials (optional): Enhance the product by incorporating materials like wood or metal. 

#Assemble and Finish: Assemble the modified prints and materials using glue or screws. Apply paint or varnish for a polished look. 

#Display and Share: Proudly showcase your upcycled PLA products and encourage others to recycle and upcycle as well.

By following these steps, you can creatively transform PLA 3D prints into unique and functional upcycled products, contributing to a more sustainable and eco-friendly approach to 3D printing.

How to Recycle PLA 3D Prints into New Filament?

Recycling PLA 3D prints into new filaments is a great way to close the loop in the 3D printing process and reduce waste. To recycle PLA 3D prints into new filament:

#Collect and Sort: Gather used prints and sort them by color, size, and type (if applicable) for efficient recycling.

#Clean: Thoroughly clean prints with warm water and mild soap, removing dust and debris.

#Shred: Cut prints into small pieces using a 3D print shredder or strong scissors.

#Heat and Extrude: Feed shredded PLA into the extruder at the right temperature to form a new filament.

#Cool and Spool: Cool the melted PLA quickly, then spool the new filament.

#Test and Store: Ensure quality by testing the new filament and storing it in a dry container.

#Repeat: Keep recycling PLA prints to make more filament and try different colors or blends.

Recycling PLA 3D Prints via a Waste Recycling Service

Recycling PLA 3D prints via a waste recycling service is a straightforward process. Here’s how you can do it:

#Collect and Separate: Gather your used PLA 3D prints and separate them from other types of waste to ensure proper recycling.

#Check Local Facilities: Look for waste recycling services or centers in your area that accept PLA plastics. Contact them or check their website to verify their acceptance of PLA.

#Clean the Prints: Rinse and clean the PLA prints to remove any dirt or debris. Recycling centers prefer clean materials to avoid contamination.

#Drop-off or Schedule Pickup: Take the cleaned PLA prints to the recycling service’s drop-off location or arrange for a pickup if available.

#Follow Instructions: Follow any specific instructions provided by the recycling service for recycling PLA. This might include bagging the prints separately or using specific recycling bins.

#Provide Information (if needed): Some recycling centers may ask for information about the PLA material, such as its type or source. Provide this information if required.

#Educate and Encourage: Educate others in your community about recycling PLA, and encourage them to participate in responsible waste management practices.

By using a waste recycling service for your PLA 3D prints, you can contribute to a more sustainable environment and support the recycling of this biodegradable material, helping to reduce plastic waste and its impact on the planet.

Equipment Needed

To recycle PLA 3D prints into new filament, you’ll need the following equipment:

  1. 3D Print Shredder or Strong Scissors: To cut the used PLA 3D prints into small pieces for easy processing.
  2. Warm Water and Mild Soap: For cleaning the PLA prints and removing any dust, debris, or remaining support material.
  3. 3D Printer with Extruder: To preheat and extrude the shredded PLA pieces into a new filament.
  4. Extrusion Machine or Filament Extruder: Used to feed the shredded PLA into the extruder and melt it to form a new filament.
  5. Cooling Fan or Water Bath: To rapidly cool the melted PLA, allowing it to solidify into filament.
  6. Filament Spool or Holder: To store the new recycled PLA filament after cooling.
  7. Filament Testing Equipment: To ensure the quality and printability of the newly recycled PLA filament.
  8. Dry and Airtight Container: For storing the recycled PLA filament to prevent moisture absorption, which could affect its print quality.

Note: Some of this equipment may be available commercially, while others, such as a filament extruder, may require DIY fabrication or specialized machines. 

Be sure to follow safety guidelines and manufacturer instructions when using any equipment. 

Additionally, if you’re recycling PLA through a waste recycling service, you won’t need the above equipment, as the recycling facility will handle the recycling process.

Rules For Recycling Filament

Recycling filament can be a rewarding and sustainable practice. While specific rules may vary depending on the recycling method and equipment used, here are some general guidelines for recycling filament:

1. Only Recycle Compatible Materials 

Ensure that you are recycling filament made from the same type of plastic. Mixing different types of plastics can result in poor-quality filament or damage to your 3D printer.

2. Clean and Prepare the Material

Thoroughly clean and remove any contaminants, dust, or debris from the used filament before recycling. Contaminated material can affect the quality of the recycled filament.

3. Shred the Filament

Use a filament shredder or a similar method to cut the used filament into small pieces. This will make it easier to process and melt.

4. Avoid Contamination

Keep the recycling process free from contamination by ensuring that only the intended material is used and that it is clean and dry.

5. Proper Temperature and Extrusion

Use the appropriate temperature settings for the specific type of plastic being recycled. This ensures that the filament is melted and extruded correctly.

6. Quality Testing

Test the newly recycled filament for printability and quality. Make sure it adheres to your desired specifications before using it for 3D printing projects.

7. Store Properly

Store the recycled filament in a dry and airtight container to prevent moisture absorption, which can affect its printing performance.

8. Educate Yourself

Familiarize yourself with the recycling process and guidelines for the specific equipment you are using. Knowledge of proper recycling techniques helps to achieve better results.

9. Monitor Filament Quality

Keep an eye on the quality of the recycled filament over time. If you notice any degradation, adjust your recycling process or seek guidance from experienced recyclers.

By adhering to these rules, you can enhance the efficiency and success of recycling filament, supporting a more sustainable 3D printing practice and reducing plastic waste.

Advantages of Recycling PLA

Recycling PLA (Polylactic Acid) offers several advantages that contribute to a more sustainable and environmentally friendly approach to plastic use and waste management. Some of the key advantages of recycling PLA include:

#Reduced Environmental Impact: Recycling PLA helps decrease the need for new plastic production, which often relies on fossil fuels. 

This, in turn, reduces greenhouse gas emissions and conserves valuable non-renewable resources.

#Energy Conservation: Recycling PLA requires less energy compared to producing virgin PLA from raw materials. 

These energy savings contribute to overall resource efficiency.

#Waste Reduction: Recycling PLA diverts used PLA products from landfills and incineration, reducing the amount of plastic waste and its associated environmental impact.

#Closed-Loop System: PLA recycling supports a closed-loop system, where materials are reused or upcycled instead of discarded after a single use, promoting a circular economy.

#Sustainable Resource Management: PLA is often derived from renewable resources like corn or sugarcane. 

By recycling PLA, we extend the lifespan of these resources and ensure their sustainable management.

#Reduced Land and Marine Pollution: By recycling PLA, we help prevent PLA products from ending up in the environment, thus reducing litter and marine pollution.

#Promotion of Responsible Consumer Behavior: Recycling PLA raises awareness among consumers about the importance of recycling and responsible waste management practices.

#Innovation and Product Diversity: Recycling PLA opens up opportunities for creative upcycling projects, leading to a diverse range of products made from recycled PLA.

#Market Incentives for Sustainable Practices: A growing demand for recycled PLA can drive investments in recycling infrastructure and technologies, encouraging further advancements in sustainability.

#Environmental Education and Engagement: PLA recycling initiatives provide opportunities for educational programs and community involvement, fostering a sense of environmental responsibility.

By recognizing and harnessing these advantages, we can promote the widespread adoption of PLA recycling, contributing to a more sustainable future and addressing the challenges posed by plastic waste in our environment.


In conclusion, recycling PLA (Polylactic Acid) is a vital step toward reducing plastic waste and promoting a more sustainable future. Though PLA is technically recyclable, challenges such as limited infrastructure, contamination concerns, and variable sources can make recycling difficult. 

However, the benefits of recycling PLA are significant, including reduced environmental impact, resource conservation, waste reduction, and the promotion of a circular economy. 

Recycling PLA 3D prints into new filaments is one practical approach, that contributes to the responsible management of this biodegradable material. 

By continuing to address the PLA recycling problem and investing in research and technology, we can improve recycling capabilities and create a more efficient and effective recycling process. 

As consumers, educators, and manufacturers, we can play a crucial role in raising awareness and embracing responsible PLA recycling practices to create a positive impact on our environment and global plastic waste concerns.


Can you recycle PLA filament?

Yes, PLA filament can be recycled. Recycling PLA filament involves the process of collecting used or discarded PLA filament, cleaning and preparing it for recycling, and then converting it back into new filament for reuse in 3D printing.

Why is it difficult to recycle PLA filaments?

Recycling PLA filaments is challenging due to limited infrastructure, contamination concerns, variable sources, confusion about biodegradability versus recycling, high melting point, color and additive issues, market demand, and limited consumer awareness. 

However, ongoing research and growing sustainability awareness are driving efforts to improve recycling techniques and make recycling PLA more efficient and accessible in the future.

Is composting PLA at home possible?

Yes, you can compost PLA at home if you follow specific guidelines. PLA is a biodegradable and compostable plastic made from renewable resources like cornstarch or sugarcane. 

For successful composting, you need a compost pile or bin alongside other organic materials. It works best in high-temperature composting facilities (around 140-160°F or 60-70°C) for faster decomposition. 
Ensure proper moisture and aeration, and consider cutting PLA items into small pieces to speed up decomposition. 

Check local guidelines, and look for compostable PLA products with certifications like “ASTM D6400” or “EN 13432.” Not all PLA products are suitable for home composting, so check with local facilities for accepted materials. 

When done correctly, composting PLA enriches the soil and supports sustainability.

What is better for PLA; Compositing or Recycling?

Composting PLA is suitable for certified compostable PLA products, providing soil enrichment. It works well for home or industrial composting facilities with high temperatures. Composting diverts PLA from landfills, reducing waste.

Recycling PLA involves processing used PLA products into new filaments or materials for reuse, conserving resources, and extending their life cycle. Industrial settings commonly handle PLA recycling, requiring proper collection, sorting, and cleaning.

The choice between composting and recycling PLA depends on specific circumstances, waste management goals, and local infrastructure. Both methods contribute to sustainability, addressing PLA disposal in different ways.

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