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Feasibility of biodiesel production and CO2 emission reduction by Monoraphidium dybowskii LB50 under semi-continuous culture with open raceway ponds in the desert area
Yang,Haijian1; He,Qiaoning1,2; Hu,Chunxiang1
Corresponding AuthorHu,Chunxiang(cxhu@ihb.ac.cn)
2018-04-02
Source PublicationBiotechnology for Biofuels
ISSN1754-6834
Volume11Issue:1
AbstractAbstractBackgroundCompared with other general energy crops, microalgae are more compatible with desert conditions. In addition, microalgae cultivated in desert regions can be used to develop biodiesel. Therefore, screening oil-rich microalgae, and researching the algae growth, CO2 fixation and oil yield in desert areas not only effectively utilize the idle desertification lands and other resources, but also reduce CO2 emission.ResultsMonoraphidium dybowskii LB50 can be efficiently cultured in the desert area using light resources, and lipid yield can be effectively improved using two-stage induction and semi-continuous culture modes in open raceway ponds (ORPs). Lipid content (LC) and lipid productivity (LP) were increased by 20% under two-stage industrial salt induction, whereas biomass productivity (BP) increased by 80% to enhance LP under semi-continuous mode in 5?m2 ORPs. After 3?years of operation, M. dybowskii LB50 was successfully and stably cultivated under semi-continuous mode for a month during five cycles of repeated culture in a 200?m2 ORP in the desert area. This culture mode reduced the supply of the original species. The BP and CO2 fixation rate were maintained at 18 and 33?g?m?2?day?1, respectively. Moreover, LC decreased only during the fifth cycle of repeated culture. Evaporation occurred at 0.9–1.8?L?m?2?day?1, which corresponded to 6.5–13% of evaporation loss rate. Semi-continuous and two-stage salt induction culture modes can reduce energy consumption and increase energy balance through the energy consumption analysis of life cycle.ConclusionThis study demonstrates the feasibility of combining biodiesel production and CO2 fixation using microalgae grown as feedstock under culture modes with ORPs by using the resources in the desert area. The understanding of evaporation loss and the sustainability of semi-continuous culture render this approach practically viable. The novel strategy may be a promising alternative to existing technology for CO2 emission reduction and biofuel production.
KeywordMicroalgae Lipid production Semi-continuous culture CO2 fixation Open raceway ponds Desert area Evaporation
DOI10.1186/s13068-018-1068-1
Language英语
WOS IDBMC:10.1186/s13068-018-1068-1
PublisherBioMed Central
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/72685
Collection中科院水生所知识产出(2009年前)
Corresponding AuthorHu,Chunxiang
Affiliation1.
2.
Recommended Citation
GB/T 7714
Yang,Haijian,He,Qiaoning,Hu,Chunxiang. Feasibility of biodiesel production and CO2 emission reduction by Monoraphidium dybowskii LB50 under semi-continuous culture with open raceway ponds in the desert area[J]. Biotechnology for Biofuels,2018,11(1).
APA Yang,Haijian,He,Qiaoning,&Hu,Chunxiang.(2018).Feasibility of biodiesel production and CO2 emission reduction by Monoraphidium dybowskii LB50 under semi-continuous culture with open raceway ponds in the desert area.Biotechnology for Biofuels,11(1).
MLA Yang,Haijian,et al."Feasibility of biodiesel production and CO2 emission reduction by Monoraphidium dybowskii LB50 under semi-continuous culture with open raceway ponds in the desert area".Biotechnology for Biofuels 11.1(2018).
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