College of Packaging & Printing Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China; Key Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Harbin 150040, PR China.
College of Packaging & Printing Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China.
Bioresour Technol. 2019 Oct;290:121791. doi: 10.1016/j.biortech.2019.121791. Epub 2019 Jul 11.
Production of volatile fatty acids (VFAs) via anaerobic fermentation is a potential alternative responding to the current demand for sustainable development to replace conventional fossil routes. In this study, the dynamics of VFAs production and microbial community succession from activated sludge using pretreated waste wood feedstock as carbon sources was reported. VFAs production achieved to the highest value of about 3000 mg COD/L at 10 g COD/L. The maximum acidification rate was determined as 45%. Meanwhile, VFAs composition proportion can be regulated by adjusting pH. Microbial community analysis indicated that Corynebacterium, Actinomyces and Bacteroides were the dominant bacteria genus. In terms of waste wood feedstock conversion, 0.32 g of VFAs was obtained per 1 g of wood powder. The results demonstrated that pretreated wood followed by the acidogenic sludge co-fermentation could contribute to provide an effective green method for developing biomass into value-added chemicals.
利用厌氧发酵生产挥发性脂肪酸（VFAs）是一种有潜力的替代方法，可以响应当前对可持续发展的需求，以取代传统的化石路线。在这项研究中，报告了使用预处理废木材作为碳源的活性污泥中 VFAs 生产和微生物群落演替的动力学。VFAs 生产达到了约 3000mg COD/L 的最高值，COD/L 为 10g。最大酸化速率确定为 45%。同时，通过调节 pH 值可以调节 VFAs 的组成比例。微生物群落分析表明，棒状杆菌属、放线菌属和拟杆菌属是优势细菌属。就废木材原料转化而言，每 1g 木粉可获得 0.32g 的 VFAs。结果表明，预处理木材随后与产酸污泥共发酵，可以为将生物质转化为高附加值化学品提供一种有效的绿色方法。
