Gao Qingwei, Li Lili, Wang Kun, Zhao Qingliang
State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China.
Bioengineering (Basel). 2023 Sep 14;10(9):1084. doi: 10.3390/bioengineering10091084.
The increasing global population and urbanization have led to a pressing need for effective solutions to manage the organic fraction of municipal solid waste (OFMSW). High-solids anaerobic digestion (HS-AD) has garnered attention as a sustainable technology that offers reduced water demand and energy consumption, and an increased biogas production rate. However, challenges such as rheology complexities and slow mass transfer hinder its widespread application. To address these limitations, this review emphasizes the importance of process optimization and the mass transfer enhancement of HS-AD, and summarizes various strategies for enhancing mass transfer in the field of HS-AD for the OFMSW, including substrate pretreatments, mixing strategies, and the addition of biochar. Additionally, the incorporation of innovative reactor designs, substrate pretreatment, the use of advanced modeling and simulation techniques, and the novel conductive materials need to be investigated in future studies to promote a better coupling between mass transfer and methane production. This review provides support and guidance to promote HS-AD technology as a more viable solution for sustainable waste management and resource recovery.
全球人口增长和城市化进程的加快，使得迫切需要有效的解决方案来处理城市固体废弃物的有机部分（OFMSW）。高固体厌氧消化（HS-AD）作为一种可持续技术受到关注，该技术可减少用水需求和能源消耗，并提高沼气生产率。然而，诸如流变学复杂性和传质缓慢等挑战阻碍了其广泛应用。为解决这些限制，本综述强调了HS-AD过程优化和传质强化的重要性，并总结了在OFMSW的HS-AD领域中增强传质的各种策略，包括底物预处理、混合策略和生物炭添加。此外，未来研究需要考察创新反应器设计的纳入、底物预处理、先进建模与模拟技术的使用以及新型导电材料，以促进传质与甲烷生成之间更好的耦合。本综述为推动HS-AD技术成为可持续废物管理和资源回收的更可行解决方案提供了支持与指导。
