Nitrogen recovery from food waste is associated with a couple of main food waste treatment technologies, which concentrate on recovery of energy or return of nutrients to agriculture (soils). Such treatments, however, are connected with environmental impacts. The review analyzed recent literature aiming for the identification of green technologies of nitrogen recovery, able to deal with the range of organic waste biomass, especially highlighting the environmental impacts associated with nitrogen recovery during bioconversion (application of organisms for upcycling of nutrients). It is possible to identify that there is a range of bioconversion technologies (microalgal, microbial, and insect) capable of nitrogen recovery from food waste but their efficiency is limited due to the lack of methods assigning weights to nitrogen upcycling.

从食物垃圾中回收氮与几种主要的食物垃圾处理技术相关，这些技术集中于回收能量或将养分返回农业（土壤）。然而，此类处理与环境影响有关。该综述分析了最近的文献，旨在确定氮回收绿色技术，能够处理各种有机废物生物质，特别强调了生物转化（应用生物体进行营养物升级循环）过程中与氮回收相关的环境影响。可以确定的是，存在一系列能够从食物垃圾中回收氮的生物转化技术（微藻、微生物和昆虫），但由于缺乏对氮升级循环分配权重的方法，其效率受到限制。