Integrated Design of Biorefineries Based on Spent Coffee Grounds

The circular economy concept applied to the management of spent coffee grounds (SCG) is an opportunity obtain a portfolio high added-value products and reducing environmental impact while increasing profitability energy consumption soluble production process. A systematic analysis alternatives performed unveil integration opportunities find synergies aiming at optimal set processes products. In this work, five products, dry natural extract, pigment for textile industry, biogas, digestate, electrical energy, through three different are considered. use SCG produce biodiesel discarded after prescreening. techno-economic all carried out, two were found economically promising, power extract pigment. most profitable process, with profit 40 times larger than energy. operation investment costs 4.59 MM€/year 13.97 MM€, respectively. Therefore, it possible achieve economic benefit from treatment waste.