SCSIO OpenIR  > 中科院海洋生物资源可持续利用重点实验室
High pH-induced flocculation of marine Chlorella sp for biofuel production
Yang, Fangfang; Xiang, Wenzhou; Fan, Jiewei; Wu, Hualian; Li, Tao; Long, Lijuan; Long, LJ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China.
2016
Source PublicationJOURNAL OF APPLIED PHYCOLOGY
Volume28Issue:2Pages:747-756
AbstractMicroalgae are being considered as a promising raw material for biofuel production. However, rapid, efficient, and economic technologies for harvesting microalgae are essential for successful applications. In this study, the high-pH-induced flocculation method was applied to harvest marine Chlorella sp. strains. These algae could be concentrated up to approximately 20-fold by increasing pH using NaOH, with a flocculation efficiency of 90 %. When NaOH dosage was low (1 or 3 mM), the flocculation efficiency decreased considerably with the increase of biomass concentration. At higher NaOH dosage tested (5 or 7 mM), flocculation occurred quickly and efficiently, which tended to be independent of biomass concentration. In larger volumes, all strains were flocculated with similar efficiencies (approximately 90 %) after adding 5 mM NaOH. After flocculation, the flocculated algae cells could be re-cultured as inoculum, and the growth yields in flocculated medium were slightly higher than those from fresh medium. Additionally, for each strain, there were no significant differences in lipid extraction yield and fatty acid composition according to different harvesting methods. These results showed that the high-pH-induced flocculation method could be used to harvest marine Chlorella sp. for biofuel production successfully.
Department[Yang, Fangfang; Xiang, Wenzhou; Fan, Jiewei; Wu, Hualian; Li, Tao; Long, Lijuan] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China; [Yang, Fangfang] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China ; LMB
KeywordFlocculation Ph Increase Marine Microalgae Chlorella Sp Lipid Extraction Biofuel
Subject AreaBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15474
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding AuthorLong, LJ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China.
Recommended Citation
GB/T 7714
Yang, Fangfang,Xiang, Wenzhou,Fan, Jiewei,et al. High pH-induced flocculation of marine Chlorella sp for biofuel production[J]. JOURNAL OF APPLIED PHYCOLOGY,2016,28(2):747-756.
APA Yang, Fangfang.,Xiang, Wenzhou.,Fan, Jiewei.,Wu, Hualian.,Li, Tao.,...&Long, LJ .(2016).High pH-induced flocculation of marine Chlorella sp for biofuel production.JOURNAL OF APPLIED PHYCOLOGY,28(2),747-756.
MLA Yang, Fangfang,et al."High pH-induced flocculation of marine Chlorella sp for biofuel production".JOURNAL OF APPLIED PHYCOLOGY 28.2(2016):747-756.
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