Meat-processing firm ArreBeef is using biodigestion to deal with animal waste, striving to reduce the sector’s emissions and create electricity for the national grid. This project is based on the principles of the circular economy where nothing is lost and everything is transformed. We are taking the word ‘waste’ out of the dictionary here,” Mauricio Accietto tells us, under the relentless summer sun. Accietto is a plant manager for ArreBeef Energía, a division of the ArreBeef meat-processing firm,…