Researchers transform paper sludge into valuable biofuels

Researchers have demonstrated that different types of paper industry sludge, typically treated as low-value waste, can be transformed into high-efficiency renewable biofuel. The study, published in Biofuels, Bioproducts and Biorefining, reveals that paper sludge streams vary significantly in their ability to produce bioethanol and biogas, providing a path to more efficient energy-to-energy strategies.