A better way to dispose of the biodigester waste

PepsiCo's agriculture team in Turkey has been successful in developing the anaerobic digestion technology. This technology uses a mixture of potato peels, corn kernels and other ingredients used in the company's snack foods to generate electricity and fertiliser in the same time.

The biogas generated by that this anaerobic digestion technology covers approximately 35 percent of the electricity needed to run the company's two Frito-Lay snack food plants.



This process also was able to produce a type of more environment-friendly fertiliser, supplying to its more than 350 contract farmers in Turkey.

To produce the fertiliser, after the the anaerobic digestion process, PepsiCo plants ship the left-overs to an external partner, which composts it for about three weeks to dry it out. Next, nutrients are added and the pellets are produced, packed into bags and shipped to farmers.

"As the team was thinking about what to do with the sludge, another team was looking for new fertilizer approaches that were more sustainable. Together, they found this process." said Ece Aksel, general manager of PepsiCo Turkey.




https://www.greenbiz.com/blog/2013/11/25/pepsico-turns-biodigester-sludge-fertilizer