Pizza boxes, while made from recyclable corrugated cardboard, cannot be recycled once they are saturated with grease and cheese. The best thing you can do is remove the part of the box that is not soiled and recycle that.
If the box’s corrugated cardboard is soiled with grease, cheese, and other foods, it can’t be recycled because. The paper fibers will not be able to be separated from the oils during the pulping process.
The truth of the matter is that pizza boxes are usually considered “non recyclable.” Though the material is recyclable, the problem is that the oil from the pizza usually stains the boxes. “Food is one of the worst contaminants in the paper recycling process.” We all know that oil and water do not mix so when oil gets into the equation, it messes up the entire recycling process. Some people tend to force the issue, but what they don’t know is that doing so only makes things worse. Mixing in materials that are not viable for recycling can affect the quality of other materials that could have been recycled and it can also cause damage in the machinery. Adhesives on the pizza boxes such as stickers and coupons can also get in the way of the recycling process. If you really want to help out you can simply cut out parts of the pizza box that are stained with oil as well as the parts that have adhesives on them and maybe the remaining clean parts can be made salvageable.
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