Abstract
In recent years, the circular economy and sustainability have gained attention in the food industry aimed at recycling food industrial waste and residues. For example, several plant-based materials are nowadays used in packaging and biofuel production. Among them, by-products and waste from coffee processing constitute a largely available, low cost, good quality resource. Coffee production includes many steps, in which by-products are generated including coffee pulp, coffee husks, silver skin and spent coffee. This review aims to analyze the reasons why coffee waste can be considered as a valuable source in recycling strategies for the sustainable production of bio-based chemicals, materials and fuels. It addresses the most recent advances in monomer, polymer and plastic filler productions and applications based on the development of viable biorefinery technologies. The exploration of strategies to unlock the potential of this biomass for fuel productions is also revised. Coffee by-products valorization is a clear example of waste biorefinery. Future applications in areas such as biomedicine, food packaging and material technology should be taken into consideration. However, further efforts in techno-economic analysis and the assessment of the feasibility of valorization processes on an industrial scale are needed.
Highlights
While the world experiences climate change and every year authorities adopt more sustainable policies, the scientific community is investigating more environmentally friendly solutions for the exploitation of food industrial residues.Waste management encompasses reuse, repair and recycling
The need to move towards a circular economy requires rethinking the entire plastics
In order to take part in such an effort, the present review aims at and in detail the most recent work carried out aims at summarizing and describing detail most recent work carried out in monoaims at summarizing summarizing and describing describing inthe detail the mostwork recent workout carried out in in monomonoaims at summarizing and describing in detailin mostthe recent carried in monomer, mer, material and fuel production from coffee waste
Summary
Laura Sisti 1 , Annamaria Celli 1, * , Grazia Totaro 1 , Patrizia Cinelli 2 , Francesca Signori 2 , Andrea Lazzeri 2 , Maria Bikaki 3 , Philippe Corvini 3 , Maura Ferri 4 , Annalisa Tassoni 4 and Luciano Navarini 5. Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali, Università di Bologna, Via Terracini
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