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
发表期刊JOURNAL OF APPLIED PHYCOLOGY
卷号28期号:2页码:747-756
摘要Microalgae 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.
部门归属[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
关键词Flocculation Ph Increase Marine Microalgae Chlorella Sp Lipid Extraction Biofuel
学科领域Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15474
专题中科院海洋生物资源可持续利用重点实验室
通讯作者Long, LJ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China.
推荐引用方式
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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