Bioresource Technology ( IF 9.7 ) Pub Date : 2024-01-02 , DOI: 10.1016/j.biortech.2023.130276
Xinxin Gao 1 , Qirui Wu 1 , Chunming Tang 1 , Shuangxi Li 1 , Zhuo Li 1 , Chaoqi Chen 1 , Liandong Zhu 2
This study was conducted to achieve economic and sustainable production of biomass and lipids from Chlorella sorokiniana by recirculating cultivation with recycled harvesting water, to identify the major inhibitory factors in recirculating culture, and to analyze accordingly economic benefits. The results showed that recirculating microalgae cultivation (RMC) could obtain 0.20–0.32 g/L biomass and lipid content increased by 23.1 %-38.5 %. Correlation analysis showed that the extracellular polysaccharide (PSext), chemical oxygen demand (COD) and chromaticity of recirculating water inhibited photosynthesis and induced oxidative stress, thus inhibiting the growth of C. sorokiniana. In addition, the economic benefits analysis found that circulating the medium twice could save about 30 % of production cost, which is the most economical RMC solution. In conclusion, this study verified the feasibility and economy of RMC, and provided a better understanding of inhibitory factors identification in culture.
中文翻译:
利用回收的收获水培养微藻实现了生物质和脂质的经济和可持续生产:可行性评估和抑制因素分析
本研究旨在通过利用回收的收获水进行循环培养来实现经济且可持续地生产小球藻生物量和脂质,以确定循环培养中的主要抑制因素,并分析相应的经济效益。结果表明,循环微藻培养(RMC)可以获得0.20-0.32 g/L的生物量,脂质含量增加23.1%-38.5%。相关分析表明,胞外多糖(PS ext )、化学需氧量(COD)和循环水色度抑制光合作用,诱导氧化应激,从而抑制C. sorokiniana的生长。另外,经济效益分析发现,介质循环两次可节省约30%的生产成本,是最经济的RMC解决方案。总之,本研究验证了RMC的可行性和经济性,为培养物中抑制因子的鉴定提供了更好的理解。