There are plenty of bike lanes in the notoriously pro-cycling country that is the Netherlands, but only one is made of toilet paper. In the country’s northwest province of Friesland, a 0.6-mile bike path connecting two towns is the first to be paved with recycled toilet paper, according to CityLab.
The TP helps maintain traction on slippery roads, as one expert told CityLab. The recycled toilet paper is used to add cellulose into open-graded asphalt friction course (OGFC), a type of water-permeable blacktop. This type of paving material is better at draining water, an especially important characteristic for surfaces in the Netherlands, where flood control is a necessary precaution. The cellulose helps stabilize the mixture that makes up the asphalt, known as OGAF. The recycling technology used to build the bike lane was developed by the Dutch consultants KNN and the wastewater tech company CirTec.
The recycled toilet paper in this case is collected during wastewater processing, where it’s separated out from all that excrement and then sterilized, bleached, and dried for reuse. People tend to not want to come in contact with things that have touched poop, though, so no amount of sterilization makes it OK to turn the product into recycled napkins or other paper products. But since toilet paper is typically a source of high-quality cellulose fibers (from wood chips or recycled paper), it would be a shame to waste it. Hence the pavement, which is mixed at such high temperatures that the manufacturing process would kill off any remaining pathogens that might possibly lurk within the post-treatment TP.
Friesland’s toilet paper asphalt has been around for about a year now, and according to CityLab writer Tiffany R. Jansen, it looks almost identical to the rest of the bike path. The toilet paper-laced asphalt has since been used to pave a parking lot and a dyke in the region, too.
As long as we’re wiping our butts with paper, we might as well recycle the results. Yes, toilet paper grows on trees, but that doesn’t mean we should waste it. Though the cellulose from the toilet paper only makes up about 5 percent of the pavement mixture with this technology, it’s still a good way to make a dent in city waste. Until everyone gets on the bidet train, that is.