Can You Recycle Pizza Boxes? (Explained & Solved!)

Written by: Melissa WeberPosted in: Sustainable Living
Pizza Boxes

Pizza is a popular, convenient option for a quick and satisfying meal. It is widely available for dine-in or takeout.

However, the ubiquitous pizza box has been confusing recycling bins for decades.

The following will highlight and tell you everything you need to know about pizza box recycling.

Jump to Section [Hide]

Are Pizza Boxes Recyclable?

The answer is yes, and pizza boxes are technically recyclable.

In most cases, a pizza box (commonly used by pizzerias across the country for take-out) can be recycled in the same bin as paper and other cardboard.

 Pizza boxes are made from the same material as corrugated boxes, and the average recycling recovery rate is 92 percent.

In a recent membership-wide survey, the American Forest & Paper Association (AF&PA) polled its members and found that 93.6 percent of the total amount of Old Corrugated Containers consumed by member companies are accepted for recycling at the end of their life.

The general rule with paper and cardboard is that if you can rip it in half, you can recycle it.

Can a Greasy Pizza Box Still be Recycled?

The answer is—perhaps surprisingly—still yes. You’re not alone if you were taught that the grease or cheese often left inside a pizza box contaminates the recycling stream, resulting in the whole batch being tossed in a landfill.

Consider a stack of clean, broken-down Amazon boxes.

Intuitively, we can see how these can be recycled into new boxes that meet the strength and color specifications for reuse.

The fear was that cardboard infused with mozzarella or marinara could weaken or discolor the paper or cardboard being recycled, so for decades, some paper mills refused to accept pizza boxes.

Now, however, that has changed. In July 2020, the American Forest & Paper Association (AF&PA) released new industry guidance to clear up consumer confusion regarding the recyclability of pizza boxes.

The guidance results from a study conducted by WestRock, an AF&PA member company. It states that grease and cheese levels typically found on pizza boxes do not negatively impact manufacturing.

What About the Cardboard from Frozen Pizzas?

Unfortunately, recycling frozen food boxes is more complex than placing them in the paper recycling bin.

Boxes used for packaging frozen pizzas or single-serving dinners are paper products, but they can’t go into the recycling bin with other paper, paperboard, and cardboard. That’s because they’re often made of wet-strength paperboard, cardboard coated, or combined with other materials like plastic or wax.

Because of these added components, some municipalities accept paperboard for recycling while others do not.

Is compost an Option for Recycling Pizza Boxes?

Compost may be a viable option for disposing of pizza boxes, whether greasy or not.

Cardboard and paper, even when soiled, will degrade over time in a compost pile. To make it even easier to decompose, you can cut or rip the pizza box into smaller pieces and combine it with other organic waste in a compost pile or bin.

However, if you compost through a local municipal organics collection program, check with them first.

Some collection programs do not accept grease or oil in their compost because it contaminates the rest of the pile. For example, the GrowNYC Greenmarket in New York City accepts compost but asks that participants not bring meat, fish, bones, dairy, fat, oil, or greasy food scraps to the bin.

Why Compost Pizza Boxes?

Composting is one of the easiest ways for everyone to improve the environment. Its benefits include sending less waste to landfills and fighting climate change.

Making compost locally reduces carbon emissions from hauling trash long distances and methane emissions generated by the anaerobic decomposition of food waste in landfills.

Composting also turns waste into a resource. Compost is a valuable fertilizer that returns nutrients to the soil and helps plants thrive.

How Long Does a Pizza Box Take to Decompose?

Cardboard is relatively biodegradable. Over time, microorganisms and other decomposers will break down the fibers of the cardboard and produce soil.

The rate at which this happens depends on several factors, including the type of cardboard, its state at the beginning of the decomposition process, and the nature of the surroundings.

The more surface area the cardboard is exposed to water and biological decomposers, the more efficiently these decomposers can take it apart. That’s why ripping or cutting the cardboard before disposing of it is helpful for the environment.

What if You Can’t Recycle or Compost Your Pizza Box?

If your local curbside recycling program does not accept soiled pizza boxes, and your compost hauler does not accept grease or oils. What should you do with your pizza box? The best answer is to rip it into small pieces and place it in your regular trash bin.

While this is not the most environmentally friendly option, as we’ve learned earlier, a pizza box will decompose eventually.

Trashing your pizza box may be less harmful than contaminating the recycling stream or burning boxes outside.

Can You Burn Cardboard Outside?

The short answer is no. If you think cardboard can be burned outside simply because it feels like a thicker form of paper, consider how it is treated.

Experts say that burning cardboard is terrible for the environment and should be avoided whenever possible because of the chemicals that cardboard may contain.

When cardboard is disposed of by fire, chemicals—including colored dyes and other toxins—are released into the atmosphere.

If your cardboard is dyed or colored, burning it may have even worse consequences. The fumes created when burned can harm living things and the planet.

Why Food Boxes Can’t Always Be Recycled?

Frozen food boxes would be the same as those used for cereal boxes, except with frozen food packaging, the paperboard is combined with polyethylene (a #4 or LDPE plastic). LDPE is a plastic film that protects the box’s paper material when exposed to cold temperatures and moisture.

Adding plastic to paper boxes helps protect the food from freezer burn and ensures the container won’t get soggy, but this plastic is not easily separated from the paperboard.

Recycling frozen food boxes can be challenging because plastic cannot be easily separated from paper. Some municipalities cannot accept LDPE-treated plastic, so check before recycling.

A recycling facility’s acceptance of materials often depends on what products can be made or recycled from them.

If buyers of recycled goods are not interested in using a lower grade of paper—like paper that contains small amounts of plastic—there will be no market for recycling those products. That’s why checking with your local recycling center or curbside program is always important.

WestRock Study About Pizza Box Recycling

The research conducted for the study required WestRock workers to dig around at recycling facilities, pull pizza boxes out of the trash piles, and photograph them to determine exactly how much food residue was left behind.

They ultimately discovered that neither grease nor “small amounts of cheese” would negatively affect the recyclability of cardboard or the products created from that material. Thus, even your greasy, cheesy pizza box should go in the paper recycling bin.

WestRock determined that pizza boxes in the recycling stream have an average grease content of approximately one to two percent by weight level.

When pizza boxes approach a 20 percent weight concentration of grease, interference with the paper’s inter-fiber bonding results in significant paper strength loss.

However, paper strength loss is low at pizza box grease concentrations under 10 percent. Cheese tends to solidify and get screened out during pulping, so it does not impact paper recycling.

Check with Your Local Recycling Program

Even though the AF&PA released this guidance last year, saying greasy pizza boxes should be accepted in the paper recycling bin, your local recycling center may still need to update its regulations.

While pizza boxes are recyclable, many programs have yet to accept them, or the local guidelines must be clarified.

So, it’s always important to check with your recycler or municipal curbside program to find out what they can accept and which bin to put it in. Research before recycling questionable materials to avoid throwing away the whole batch because of contamination, which sends unnecessary waste to landfills.

Although the WestRock study estimated that 70 percent of the U.S. population has access to recycling programs for empty pizza boxes, that access might include something other than your local recycling program. For example, Irvington, New York, advises its residents that “only clean pizza boxes can be recycled.

If the bottom of the box is covered in grease or food, tear it off and recycle only the clean lid. When in doubt, throw it out in the garbage.”

However, New York City’s Department of Sanitation states that pizza boxes should be recycled as cardboard. Remove and discard the soiled wax-paper liner and recycle the little plastic supports in the blue plastic bin.

What Companies are Doing Pizza Boxes Recycled

Domino’s, a popular pizza chain, commissioned the WestRock study that contributed to the AF&PA’s new greasy pizza box recycling guidelines.

WestRock is Domino’s primary paper supplier. Since then, the two companies have partnered with other companies in the recycling, paper, and pizza industries to change the game of pizza box recycling.

One of their missions is to work together to get recycling programs to accept empty corrugated pizza boxes and ensure their guidelines clearly state that they are received.

Domino’s has two corrugated box suppliers, which provide them with boxes made from over 70 percent recycled content. Their policies do not allow fiber purchase from illegal logging or trade in illegal wood or forest products. They also restrict purchasing from anyone violating traditional or human rights in forestry operations.

Domino’s is also a member of The Recycling Partnership, which works to increase the quality and accessibility of recycling. Its website even has a feature that allows you to look up your local recycling guidelines for pizza boxes.

Why is it Important to Recycle Pizza Boxes?

Recycling involves a series of actions, including collecting material, processing it, brokering it, and selling it to a consuming facility, such as a steel mill, paper mill, foundry, or plastic compounder.

The goal is to transform unprocessed, mixed materials into constant streams of single commodities that can be used as raw materials in manufacturing.

According to the Institute of Scrap Recycling Industries (ISRI), the recycling industry is a major contributor to the U.S. economy, generating more than $100 billion in economic activity annually and employing over 164,000 people.

Over two-thirds of the material recycled in the U.S. in 2018 remained in the U.S., where manufacturers used it to create new products.

The paper recycling industry’s total economic impact in the United States is nearly $34 billion.

According to WestRock research, 3 billion pizza boxes are sold in the United States annually. Together, they weigh 600,000 tons—the equivalent of 53 Eiffel Towers. If all of them were recycled, they would account for 2.6 percent of the recyclable cardboard generated in the U.S. annually.

About 80 percent of U.S. paper mills rely on recovered fiber to make some or all of their products.

Try to Avoid Purchasing Pizza in a To-go Box

If you can, avoid purchasing to-go pizza in boxes. Instead, consider making pizza at home with your family. Research suggests that people who cook from home typically have healthier diets and that home cooking is more beneficial for the planet.

Using local ingredients purchased in minimal packaging from a farmer’s market will further decrease your environmental footprint.

While the environmental impact of what you eat matters more than how (or where) it is cooked, generally, cooking from home is better for the environment than eating out in restaurants.

Making food at home allows you to source sustainable ingredients, waste less food, and use less energy. Home cooking, especially a diet rich in plants, has a lower environmental impact.

You May Also Like