期刊
FRONTIERS IN ENERGY
卷 16, 期 2, 页码 224-245出版社
HIGHER EDUCATION PRESS
DOI: 10.1007/s11708-021-0730-7
关键词
crop residue; biorefinery; bioproduct; biomass; circular bioeconomy; enzyme
资金
- Brazilian National Council for Scientific and Technological Development (CNPq) [303614/2017-0]
- Coordination for the Improvement of Higher Education Personnel (CAPES PrInt program) [88887.364337/2019-00]
- Foundation for Research Support of the Federal District (FAPDF) [PRONEX 0193.001195/2016]
Interest in lignocellulosic biomass conversion technologies has been increasing due to their potential to reduce dependency on non-renewable feedstocks. However, technical obstacles and challenges related to scaling up hinder the commercial implementation of biorefineries using crop residues as feedstocks. Further research, governmental incentives, and bioeconomic strategies are needed to overcome these challenges and promote the biorefinery market.
Interest in lignocellulosic biomass conversion technologies has increased recently because of their potential to reduce the dependency on non-renewable feedstocks. Residues from a variety of crops are the major source of lignocellulose, which is being produced in increasingly large quantities worldwide. The commercial exploitation of crop residues as feedstocks for biorefineries which could be used to produce a variety of goods such as biofuels, biochemicals, bioplastics, and enzymes is an attractive approach not only for adding value to residues but also for providing renewable products required by the expanding bioeconomy market. Moreover, the implementation of biorefineries in different regions has the potential to add value to the specific crop residues produced in the region. In this review, several aspects of crop residue application in biorefineries are discussed, including the role of crop residues in the bioeconomy and circular economy concepts, the main technical aspects of crop residue conversion in biorefineries, the main crop residues generated in different regions of the world and their availability, the potential value-added bioproducts that can be extracted or produced from each crop residue, and the major advantages and challenges associated with crop residue utilization in biorefineries. Despite their potential, most biomass refining technologies are not sufficiently advanced or financially viable. Several technical obstacles, especially with regard to crop residue collection, handling, and pre-treatment, prevent the implementation of biorefineries on a commercial scale. Further research is needed to resolve these scale-up-related challenges. Increased governmental incentives and bioeconomic strategies are expected to boost the biorefinery market and the cost competitiveness of biorefinery products.
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