高校化学工程学报2017，Vol.31Issue(2)：377-386,10.DOI:10.3969/j.issn.1003-9015.2017.02.017
有机胺对螺旋藻生长及固碳效果的影响
Effects of Organic Amine on Spirulina Growth and Carbon Fixation
王兆印 1李一锋 1张旭 1朱明龙 1谭文松1
作者信息
- 1. 生物反应器工程国家重点实验室,华东理工大学,上海 200237
- 折叠
摘要
Abstract
Research on biological CO2 fixation with aquatic and marine microalgae has attracted great attention. However, when CO2(g) is the only carbon source in microalgae cultivation, there are problems such as low CO2 mass transfer and carbon fixation rates. Research found that alkanolamine substances, such as MEA (an ethanol amine), DEA (diethanolamine), MDEA (N-methyl diethanolamine) and TEA (triethanolamine)significantly increase gas-liquid mass transfer rates of CO2 into aqueous solution. However, three are few studies discussed effects of alkanolamine on microalgae cultivation and CO2 fixation efficiency. This study investigated Spirulina platensis (FACHB - 901) cultivation processes with low CO2(g) loading gas as the only carbon source. Effects of alkanolamine type (MDEA, MEA, DEA, and TEA) and alkanolamine adding strategy on biomass production and carbon fixation rates of Spirulina platensis were systematically studied. The results show that the soluble inorganic carbon (DIC) in the modified Zarrouk medium is 297.4 mg·L-1 with the addition of 1 mmol·L-1 MDEA, and the optimal biomass production (0.894 g·L-1) and carbon fixation rate 139.3mg·(L·d)-1 are obtained via addition of 1 mmol·L-1 TEA. Meanwhile, the optimal TEA adding strategy during the whole cultivation process is also obtained experimentally, which is 5 mmol·L-1 TEA addition during delay phase, 1 mmol·L-1 TEA at the earlier stage of logarithmic phase and 2 mmol·L-1 TEA at the later stage of logarithmic phase. The final biomass amount of 1.248 g·L-1 and carbon fixation rate of 191.4 mg·(L·d)-1 are achieved, which are 25.6% and 41.2% higher than those of the control, respectively.关键词
钝顶螺旋藻/有机胺类物质/优化策略/微藻培养/固碳Key words
Spirulina platensis/Alkanolamine/Optimizing strategy/Microalgae cultivation/Carbon fixation分类
资源环境引用本文复制引用
王兆印,李一锋,张旭,朱明龙,谭文松..有机胺对螺旋藻生长及固碳效果的影响[J].高校化学工程学报,2017,31(2):377-386,10.
