The grease and cheese study that proved pizza box recyclability
For years, there has been uncertainty surrounding what happens to pizza boxes after the last slice is eaten. The persistent question remains: Are pizza boxes recyclable? This uncertainty stems from concerns about grease and cheese contamination, leading many to believe that pizza boxes are destined for the trash rather than the recycling bin. However, a groundbreaking study conducted by the American Forest & Paper Association (AF&PA) in 2019 has shed light on this issue, offering hope for increased pizza box recycling and environmental benefits.
The misconception that pizza boxes with grease cannot be recycled has deeply ingrained itself in the public’s understanding, creating widespread confusion and acting as a barrier to effective recycling initiatives. This misbelief has decreased pizza box recycling rates, which ultimately contributes to the problem of recyclable waste entering landfills.
Unfortunately, many pizza boxes that could be recycled are instead disposed of in landfills, where they contribute to the accumulation of waste. This accumulation poses considerable environmental risks, such as contamination of soil and water sources due to the decomposition of organic materials within the landfill.
Moreover, the breakdown of organic matter in landfills produces methane gas, a potent greenhouse gas that contributes to climate change. As landfills reach capacity and continue to overflow, the environmental threats they pose only intensify, underscoring the urgent need for improved recycling practices and waste management strategies.
In response to pizza box recycling concerns, the American Forest & Paper Association conducted a thorough study to investigate their recyclability. Contrary to popular belief, the study found that the amount of grease typically present on used pizza boxes is minimal, usually ranging from 1 to 2% by weight.
More importantly, the study’s groundbreaking discovery was that this small residue of grease does not significantly hinder the paper fibres during the recycling process. The papermaking process creates a strong network of cellulose fibres within the pizza box. This network can withstand a small amount of grease without compromising its structural integrity during recycling.
During the pulping stage of paper recycling, the mixture is subjected to various cleaning techniques. These techniques effectively remove the small amount of grease present, leaving behind clean and recyclable paper fibers. Therefore, pizza boxes are actually suitable for recycling.
According to the AF&PA, if all pizza boxes in the United States were recycled, it would represent a significant boost to the recycled paper stream, potentially by as much as 2.6%. Beyond the environmental benefits of reduced landfill waste and lower methane emissions, increased pizza box recycling also holds economic advantages.
More recycled pizza boxes mean a more readily available source of raw materials for the paper industry. This can translate to cost savings for manufacturers and potentially lower prices for consumers on everyday paper products. Recycling pizza boxes also promotes a more circular economy, where resources are used efficiently, and waste is minimized.
The findings from the study conducted by the American Forest & Paper Association empower consumers to make informed decisions about recycling pizza boxes. Understanding that the small amount of grease typically found on used pizza boxes does not pose a significant obstacle to recycling empowers individuals to act.
However, it is crucial for consumers to adhere to the guidelines outlined by their local recycling programs. This may involve removing any remaining food scraps from the boxes before placing them in the recycling bin. By following these simple steps, consumers play a vital role in contributing to a more sustainable and environmentally friendly waste management system. Ultimately, individual actions can collectively significantly reduce waste and preserve the environment for future generations.
