Biochemical methane potential of raw and pre-treated meat-processing wastes

► Biochemical methane potential (BMP) of pre-treated greaves and rinds were studied. ► BMP of rinds was improved 25% by exposure to 70 °C for 24 h. ► Incomplete hydrolysis of rinds caused inhibition of methanogens in the BMP assays. ► For greaves, hydrolysis was the limiting step even after the applied pre-treatments.