Disposable diapers are a massive environmental offender. Roughly 300,000 of them are sent to landfills or incinerated every minute, according to the World Economic Forum, and they take hundreds of years to decompose. It’s a $60 billion business.
One alternative approach has been compostable diapers, which can be made out of wood pulp or bamboo. But composting services aren’t universally available and some of the products are less absorbent than normal nappies, critics say.
A growing number of parents are also turning to cloth diapers, but they only make up about 20% of the U.S. market.
ZymoChem is attacking the diaper problem from a different angle. Harshal Chokhawala, CEO of ZymoChem, said that 60% to 80% of a typical diaper consists of fossil-based plastics. And half of that is an ingredient called super absorbent polymer, or SAP.
“What we have created is a low carbon footprint bio-based and biodegradable version of this super absorbent polymer,” Chokhawala said.
ZymoChem, with operations in San Leandro, California, and Burlington, Vermont, invented this new type of absorbent by using a fermentation process to convert a renewable resource — sugar — from corn into biodegradable materials. It’s similar to making beer.
“We’re at a point now where we’re very close to being at cost parity with fossil based manufacturing of super absorbents,” said Chokhawala.
The company’s drop-in absorbents can be added into other diapers, which makes it different from environmentally conscious companies like Charlie Banana, Kudos and Hiro, which sell their own brand of diapers.
ZymoChem doesn’t yet have a diaper product on the market. But Lindy Fishburne, managing partner at Breakout Ventures and an investor in the company, says it’s a scalable model.
“Being able to build and grow with biology allows us to unlock a circular economy and a supply chain that is no longer petro-derived, which opens up the opportunities of where you can manufacture and how you secure supply chains,” Fishburne said.
Other investors include Toyota Ventures, GS Futures, KDT Ventures, Cavallo Ventures and Lululemon. The company has raised a total of $35 million.
The Lululemon partnership shows that it’s not just about diapers. ZymoChem’s bio-based materials can also be used in other hygiene products and in bio-based nylon. Lululemon recently said it will use it in some of its leggings, which were traditionally made with petroleum.
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