Alcohol industry residues(AIRs)are protein-rich lignocellulosic biowastes from a major industry,having the dual traits of renewable biomass and organic waste.They mainly consist of Brewer's spent grains(BSG)and Ba...Alcohol industry residues(AIRs)are protein-rich lignocellulosic biowastes from a major industry,having the dual traits of renewable biomass and organic waste.They mainly consist of Brewer's spent grains(BSG)and Baijiu distiller's grains(BDG),with annual production totaling tens of millions of tons.Recycling these residues effectively is crucial for the environment,society,and industry.Given their unique characteristic of concentrated carbon and nitrogen sources,valorizing AIRs into biocarbon products through thermochemistry is the most sustainable method for waste management,resource recycling,and green ecology.In this review,the preparation and properties of AIRs-derived biocarbon products are systematically discussed.Recent advancements in the green thermochemical valorization of AIRs into biocarbon products for various applications like thermal utilization,environmental remediation,and energy storage are comprehensively reviewed.It is suggested that hydrothermal carbonization,coupled with necessary chemical functionalization(e.g.,using metal oxides and oxysalts),would be a preferable strategy for producing desired functionalized biocarbon for use as carbon adsorbents(for wastewater treatment)and carbon fertilizers(for soil conservation).The yield and quality of functionalized biocarbon can be ensured through the directional regulation of the migration of essential elements like carbon and nitrogen.The co-generation of nitrogen-doped biochar and nitrogen-enriched liquid fertilizer using innovative hydrothermal strategies is identified as a potential research avenue to achieve the full and cascading utilization of AIRs.This review aims to provide an overview and insights into thermochemically valorizing AIRs alongside other light industrial residues for relevant researchers.展开更多
基金supported by the National Natural Science Foundation of China(No.51906247)the Hunan Provincial Natural Science Foundation of China(Grant No.2023JJ30691)the Guangdong Foundation for Program of Science and Technology Research(Grant No.2023B1212060049).
文摘Alcohol industry residues(AIRs)are protein-rich lignocellulosic biowastes from a major industry,having the dual traits of renewable biomass and organic waste.They mainly consist of Brewer's spent grains(BSG)and Baijiu distiller's grains(BDG),with annual production totaling tens of millions of tons.Recycling these residues effectively is crucial for the environment,society,and industry.Given their unique characteristic of concentrated carbon and nitrogen sources,valorizing AIRs into biocarbon products through thermochemistry is the most sustainable method for waste management,resource recycling,and green ecology.In this review,the preparation and properties of AIRs-derived biocarbon products are systematically discussed.Recent advancements in the green thermochemical valorization of AIRs into biocarbon products for various applications like thermal utilization,environmental remediation,and energy storage are comprehensively reviewed.It is suggested that hydrothermal carbonization,coupled with necessary chemical functionalization(e.g.,using metal oxides and oxysalts),would be a preferable strategy for producing desired functionalized biocarbon for use as carbon adsorbents(for wastewater treatment)and carbon fertilizers(for soil conservation).The yield and quality of functionalized biocarbon can be ensured through the directional regulation of the migration of essential elements like carbon and nitrogen.The co-generation of nitrogen-doped biochar and nitrogen-enriched liquid fertilizer using innovative hydrothermal strategies is identified as a potential research avenue to achieve the full and cascading utilization of AIRs.This review aims to provide an overview and insights into thermochemically valorizing AIRs alongside other light industrial residues for relevant researchers.
