Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia.
Key Laboratory of Environmental Biology and Pollution Control, College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China.
J Environ Manage. 2022 Oct 1;319:115777. doi: 10.1016/j.jenvman.2022.115777. Epub 2022 Jul 21.
Food waste (FW) is not only a major social, nutritional and environmental issue, but also an underutilized resource with significant energy, which has not been fully explored currently. Considering co-digestion can adjust carbon to nitrogen ratio (C/N) of the feedstock and improve the synergetic interactions among microorganisms, anaerobic co-digestion (AnCoD) is then becoming an emerging approach to achieve higher energy recovery from FW while ensuring the stability of the system. To obtain higher economic gain from such biodegradable wastes, increasing attention has been paid on optimizing the system configuration or applying enzymatic hydrolysis before digesting FW. A better understanding on the potentiality of correlating enzymatic pretreatment and AnCoD operated in various system configuration would enhance the bioresource recovery from FW and increase revenue through treating this organic waste. Specifically, the biobased chemicals outputs from FW-related co-digestion system with different configuration were firstly compared in this review. A deep discussion concerning the challenges for achieving bioresources recovery from FW co-digestion systems with enzymatic pretreatment was then given. Recommendations for future studies regarding FW co-digestion were then proposed at last.
食物垃圾（FW）不仅是一个主要的社会、营养和环境问题，也是一个未充分开发的具有巨大能源的资源，目前尚未得到充分探索。考虑到共消化可以调节原料的碳氮比（C/N）并改善微生物之间的协同相互作用，因此厌氧共消化（AnCoD）正成为一种从 FW 中实现更高能量回收的新兴方法，同时确保系统的稳定性。为了从这些可生物降解废物中获得更高的经济收益，人们越来越关注优化系统配置或在消化 FW 之前应用酶水解。更好地了解酶预处理与在不同系统配置下运行的 AnCoD 之间的相关性，可以增强从 FW 中回收生物资源的能力，并通过处理这种有机废物增加收入。具体来说，本文首先比较了不同配置的 FW 相关共消化系统的生物基化学品产量。然后深入讨论了在酶预处理下从 FW 共消化系统中实现生物资源回收所面临的挑战。最后提出了关于 FW 共消化的未来研究建议。
