Assessing the Potential of Spent Coffee Grounds Valorization as a Renewable Resource for Sustainable Value-Added Products: A Mini Review

Abstract

Coffee is a popular beverage consumed worldwide, resulting in vast amounts of spent coffee grounds as waste. Coffee waste is amongst the major environmental concerns due to its high organic content and significant carbon emissions. Despite the extensive research on the subject, a comprehensive analysis of the current state of research on coffee waste valorization is still needed. This review paper aims to provide such an analysis, focusing on different valorization approaches such as composting, pyrolysis, and bioconversion. The efficiency and environmental impact of each approach will be evaluated, along with the potential applications of resulting products such as biofuels, bioplastics, and fertilizers. Additionally, the economic feasibility and scalability of coffee waste valorization technologies will be explored, including their potential for implementation in various contexts. By consolidating existing knowledge and identifying research gaps, this review paper aims to contribute to the development of more sustainable and efficient strategies for coffee waste management and valorization.