Optimization of carbon dioxide fixation and starch accumulation by Tetraselmis subcordiformis in a rectangular airlift photobioreactor

被引:0
|
作者
Zheng, Yang [1 ,2 ]
Chen, Zhaoan [1 ]
Lu, Hongbin [1 ]
Zhang, Wei [1 ,3 ]
机构
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Marine Bioprod Engn Grp, Dalian, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] Flinders Univ S Australia, Sch Med, Flinders Ctr Marine Bioproc & Bioprod, Adelaide, SA 5042, Australia
来源
AFRICAN JOURNAL OF BIOTECHNOLOGY | 2011年 / 10卷 / 10期
基金
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词
Photobioreactor; CO(2) fixation rate; starch productivity; response surface methodology; desirability function approach; FLAT-PLATE PHOTOBIOREACTOR; GREEN-ALGA; PHAEODACTYLUM-TRICORNUTUM; BIOCHEMICAL-COMPOSITION; CHLOROCOCCUM-LITTORALE; BIOMASS PRODUCTION; ETHANOL-PRODUCTION; DENSITY CULTURE; MASS-TRANSFER; GROWTH;
D O I
暂无
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Culture conditions are very important to CO(2) bio-fixation and carbohydrate accumulation in microalgae. The objective of this study was to optimize semi-continuous culture conditions of Tetraselmis subcordiformis in a rectangular airlift photobioreactor for obtaining maximized carbon dioxide fixation rate and intracellular starch productivity. The effects of the initial biomass concentration (0.13, 0.8, 1.8, 2.8 and 3.47 g L(-1)), the gas flow rate (0.03, 0.1, 0.2, 0.3 and 0.37 V V(-1) m(-1)) and different carbon dioxide concentrations (1.63, 5, 10, 15 and 18.37%) were considered using a central composite design. By using response surface methodology and the desirability function approach, the optimal CO(2) fixation rate of 55.15 mg L(-1) h(-1) and the intracellular starch productivity of 10.66 mg L(-1) h(-1) occurred when the initial biomass concentration was 1120 mg L(-1) and the air supplemental CO(2) concentration was 6.9% with a gas flow rate of 0.35 V V(-1) m(-1). These results suggest the potential of applying T. subcordiform to CO(2) mitigation and starch production.
引用
收藏
页码:1888 / 1901
页数:14
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