Lignocellulosic biomass is an effective and sustainable alternative for petroleum-derived fuels and chemicals to produce biofuels and bio-based products. Despite the high availability, the degradation of biomass is a substantial challenge. Hence, it is necessary to integrate several unit processes such as biochemical, thermochemical, physical, and catalytic conversion technologies to produce a wide range of bio-based products. Integrating the processes enhances the yield, reduces the reaction time, and can be cost-effective. Process integration could significantly lead to various outcomes which guide towards the circular economy. This review addresses integration of several biorefinery processes for the production of multifaceted products. In addition, modern and sustainable biorefinery technologies are discussed to pave the path towards circular economy through the closed-loop approach.

木质纤维素生物质是石油衍生燃料和化学品生产生物燃料和生物基产品的有效且可持续的替代品。尽管可用性高，但生物质的降解是一个巨大的挑战。因此，有必要整合多个单元过程，如生化、热化学、物理和催化转化技术，以生产范围广泛的生物基产品。整合这些过程可以提高产量，减少反应时间，并且具有成本效益。流程整合可以显着产生各种指导循环经济的结果。本综述讨论了用于生产多方面产品的几种生物精炼工艺的集成。此外，