Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, Greece.
Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, Greece.
Bioresour Technol. 2022 Jun;354:127172. doi: 10.1016/j.biortech.2022.127172. Epub 2022 Apr 18.
The organic fraction of municipal solid waste (OFMSW) was used for biorefinery development within a circular bioeconomy context towards extraction of lipids/fats and proteins with 100% and 68% recovery yields, respectively, as well as succinic acid (SA) production. A nutrient-rich hydrolysate (89.1 g/L sugars) produced using crude enzymes derived via solid state fermentation of Aspergillus awamori, was employed in Actinobacillus succinogenes fermentation leading to 31.7 g/L with 0.68 g/g yield and 0.67 g/L/h productivity. The SA minimum selling price ($1.13-2.39/kg) considering 60,000 t/year production varied depending on co-product market prices and OFMSW management fees. The biorefinery using 1000 kg OFMSW contributes 35% lower CO emissions than conventional processes for the production of 105 kg vegetable oil, 87 kg vegetable protein and 206.4 kg fossil-SA considering also the CO emissions due to OFMSW landfilling. The proposed OFMSW biorefinery leads to cost-competitive SA production with lower CO emissions for OFMSW treatment.
城市固体废物的有机部分（OFMSW）在循环生物经济背景下用于生物炼制开发，分别以 100%和 68%的回收率提取脂质/脂肪和蛋白质，以及生产琥珀酸（SA）。使用固态发酵 Aspergillus awamori 获得的粗酶生产出富含营养的水解物（89.1 g/L 糖），用于 Actinobacillus succinogenes 发酵，得到 31.7 g/L，产率为 0.68 g/g，生产效率为 0.67 g/L/h。考虑到每年 6 万吨的产量，SA 的最低销售价格（$1.13-2.39/kg）取决于副产品市场价格和 OFMSW 管理费用。与生产 105 公斤植物油、87 公斤植物蛋白和 206.4 公斤化石琥珀酸的传统工艺相比，使用 1000 公斤 OFMSW 的生物炼制过程产生的 CO 排放量减少了 35%，这还考虑到了由于 OFMSW 填埋而产生的 CO 排放。拟议的 OFMSW 生物炼制导致处理 OFMSW 时产生具有成本竞争力的 SA，并且 CO 排放量更低。
