Re-purposing by-products is common in the food and beverage industry to both reduce waste and create additional value added products.
However, Coca-Cola has gone one step further, recognizing that a citrus processing by-product may be used to make animal feed, and that a fiber by-product from making the animal feed may be extracted for use in paper products. Basically, Coca-Cola obtained a patent (U.S. Pat. No. 9,909,260) directed towards a method for using by-products of goods made from by-products.
It goes to show that, with a little creativity, the life cycle of raw materials may extend far beyond their original use.