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An applicable nitrogen supply strategy for attached cultivation of Aucutodesmus obliquus
Ji, Chunli1,2; Wang, Junfeng1; Zhang, Wei1; Liu, Jinli1; Wang, Hui1; Gao, Lili1; Liu, Tianzhong1
2014-02-01
Source PublicationJOURNAL OF APPLIED PHYCOLOGY
Volume26Issue:1Pages:173-180
Abstract

The "attached cultivation" method of microalgae in which the wet paste of algal biomass is attached onto supporting materials to form an immobilized biofilm layer, and the culture medium is supplied to this layer to provide nutrients and moisture for growth was highly efficient in biomass production and represents a promising technology to improve the biofuel industry. To optimize the nitrogen supply strategy for this attached cultivation method, the growth and total lipids accumulation properties for the green alga Aucutodesmus obliquus with this method were studied under different quantities of nitrogen source and different volumes of aqueous medium that continuously circulated inside the photobioreactor. Results showed that, compared with medium volume, the nitrogen quantity was a stronger factor affecting the growth and total lipid accumulation. An optimized nitrogen supply strategy for the attached cultivation of A. obliquus is proposed as circulating ca. 60 L of BG-11 medium containing 1/10 of nitrate concentration for 1 m(2) of cultivation surface. With this strategy, the attached A. obliquus accumulated biomass and total lipids simultaneously and obtained a high triacylglyceride productivity of 2.53 g m(-2) day(-1) in 7 days under subsaturated illumination of 100 mu mol photons m(-2) s(-1). The water usage of 60 L m(-2) was potentially decreased to < 2 L m(-2) if the nutrient supply was further improved. Dissolving the nitrogen source in small volume was the best way to efficiently utilize the nitrogen source with minimum of waste.

SubtypeArticle
KeywordAttached Cultivation Aucutodesmus Obliquus (Chlorophyceae) Nitrogen Growth Total Lipids
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s10811-013-0115-3
WOS KeywordHAEMATOCOCCUS-PLUVIALIS ; LIPID-ACCUMULATION ; MICROALGAE ; BIOMASS ; GROWTH ; ALGAE ; WATER ; ASTAXANTHIN ; PHOTOBIOREACTOR ; PRODUCTIVITY
Indexed BySCI
Language英语
WOS Research AreaBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS SubjectBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS IDWOS:000330969800020
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/6224
Collection微藻生物技术研究组
Affiliation1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Shandong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ji, Chunli,Wang, Junfeng,Zhang, Wei,et al. An applicable nitrogen supply strategy for attached cultivation of Aucutodesmus obliquus[J]. JOURNAL OF APPLIED PHYCOLOGY,2014,26(1):173-180.
APA Ji, Chunli.,Wang, Junfeng.,Zhang, Wei.,Liu, Jinli.,Wang, Hui.,...&Liu, Tianzhong.(2014).An applicable nitrogen supply strategy for attached cultivation of Aucutodesmus obliquus.JOURNAL OF APPLIED PHYCOLOGY,26(1),173-180.
MLA Ji, Chunli,et al."An applicable nitrogen supply strategy for attached cultivation of Aucutodesmus obliquus".JOURNAL OF APPLIED PHYCOLOGY 26.1(2014):173-180.
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