Biorefinery of spent coffee grounds waste: Viable pathway towards circular bioeconomy

• Published in: Bioresource technology 2020-04, Vol.302, p.122821-122821, Article 122821
• Main Authors: Rajesh Banu, J., Kavitha, S., Yukesh Kannah, R., Dinesh Kumar, M., Preethi, Atabani, A.E., Kumar, Gopalakrishnan
• Format: Article
• Language: English
• Subjects: Bio-fuels; Biofuels; Coffee; Environmental impacts; Spent coffee ground biorefinery; Techno economic assessment; Value-added products
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2020.122821

•Spent coffee ground is an excellent resource of nutrients rich feedstock.•Spent coffee ground biorefinery is a sustainable route to produce multiple products.•Spent coffee ground biorefinery promotes circular bioeconomy.•Energy and economic aspects of spent coffee ground biorefinery is assessed. The circular bioeconomy plan is an innovative research based scheme intended for augmenting the complete utilization and management of bio-based resources in a sustainable biorefinery route. Spent coffee grounds based biorefinery is the emerging aspect promoting circular bioeconomy. The sustainable circular bioeconomy by utilizing SCG is achieved by cascade approaches and the inclusion of many biorefinery approaches to obtain many bio-products. The maximum energy recovery can be obtained by process integration. The economic analysis of the biofuel production from SCG is dependent on the cost of raw material, transportation, the need of labor and energy, oil extraction operations and biofuel production. The inclusion of new products from already established product can minimize the investment cost when related to the production cost. A positive net present value can be achieved via SCG biorefinery which indicates the profitability of the process.