Amid these, the definition of biorefinery encompasses many procedures accustomed to procedure sewage sludge for biofuel and/or resource recovery. As well as the “conventional” recovery of biogas and nutrients, biopolymers (PHAs and EPS), proteins, enzymes, biopesticides, and biofuels are among the “new” sludge extraction items that are now being studied. https://samamoo.com/category/featured