Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125 Napoli, Italy.
Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Gaetano di Biasio 43, 03043 Cassino, Italy.
Bioresour Technol. 2022 Jul;355:127289. doi: 10.1016/j.biortech.2022.127289. Epub 2022 May 8.
In line with the emerging circular bioeconomy paradigm, the present study investigated the valorisation of abundant hemp biomass residues (HBRs) such as hurds (HH) and a mix of leaves and inflorescences (Mix), and other organic wastes (i.e., cheese whey and grape pomace) through the volatile fatty acid (VFA) production in mono- and co-acidogenic fermentation. The highest VFA yields, measured as acetic acid (HAc) per unit of volatile solids (VS), were obtained with the untreated Mix in mono-fermentation (185 ± 57 mg HAc/g VS) and with the combination of Mix and CW in co-fermentation (651 ± 65 mg HAc/g VS), while the highest HAc percentage reached up to 94% of total VFAs. Finally, a preliminary techno-economic evaluation revealed that the mono-fermentation of alkali pretreated HH could lead to the highest revenues among HBRs, reaching up to 710-1810, 618-1577 and 766-3722 €/ha∙year for the production of HAc, single cell protein and polyhydroxybutyrates, respectively.
本研究遵循新兴的循环生物经济范式，通过单酸发酵和共酸发酵，研究了丰富的大麻生物质残渣（HBRs）（如麻屑（HH）和叶与花序混合物（Mix））以及其他有机废物（即奶酪乳清和葡萄渣）的增值利用，以生产挥发性脂肪酸（VFA）。未处理的 Mix 在单发酵中（185±57mgHAc/gVS）和 Mix 与 CW 的共发酵中（651±65mgHAc/gVS）获得了最高的 VFA 产率，以单位挥发性固体（VS）计为乙酸（HAc），而最高的 HAc 百分比高达总 VFA 的 94%。最后，初步的技术经济评估表明，碱预处理 HH 的单发酵可能会导致 HBRs 中最高的收入，生产 HAc、单细胞蛋白和聚羟基丁酸酯的收入分别高达 710-1810、618-1577 和 766-3722€/ha·年。
