城市固体废物
分数(化学)
化学
废物管理
发酵
阶段(地层学)
生产(经济)
环境科学
废弃物
制浆造纸工业
有机化学
工程类
生物
古生物学
宏观经济学
经济
作者
Anna Duber,Roman Zagrodnik,Natalia Gutowska,Filip Brodowski,Tomasz Dąbrowski,Sławomir Dąbrowski,Mateusz Łężyk,Piotr Oleśkowicz-Popiel
标识
DOI:10.1016/j.biortech.2024.131697
摘要
Single-stage fermentation was characterized by low medium chain carboxylic acids concentrations and different mesophilic temperatures had little effect on the process performance, whereas thermophilic conditions and pH 5.5 led to lactate and ethanol accumulation. Two-stage fermentation enabled almost twofold increase in the caproate productivity, that reached 0.8 g/L-d (1.7 ± 0.1 gCOD/L-d) with a caproate concentration of 4.0 g/L (8.4 gCOD/L) at specificity of 37 % and led to a reduced release of carbon dioxide. Under pH 6.5 and temperature of 37°C the production of medium chain carboxylic acids required higher concentrations of ethanol. Number of reads annotated to fatty acid biosynthesis pathway exceeded the number of sequences assigned to the reverse β-oxidation pathway. Core microorganisms encoding these pathways belonged to Caproiciproducens, Caproicibacterium and Clostridium. This study provides a valuable insight for valorisation of organic fraction of municipal solid waste into carboxylates in a single- and two-stage systems.
科研通智能强力驱动
Strongly Powered by AbleSci AI