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Process Analysis of Alkaline Flocculation Harvesting for Chaetoceros muelleri and Scenedesmus quadricauda
Huo, Shuhao1,2,3,4; Wang, Zhongming2,3; Zhu, Shunni2,3; Cui, Fengjie1; Zou, Bin1; Wang, Feng1; Yuan, Zhenhong2,3; Dong, Renjie4; Zhao, Pengxiang5
2016-06-01
Source PublicationBIOENERGY RESEARCH
Volume9Issue:2Pages:682-690
AbstractAlkaline flocculation could be an attractive microalgae harvesting method, because it is low-cost, low energy consumption, and non-toxic to microalgal cells, and the high pH effectively sterilizes the microalgal biomass as well as the process water. In this paper, the mechanism of alkaline flocculation process and the difference between the two strains marine diatom Chaetoceros muelleri #862 and freshwater algae Scenedesmus quadricauda #507 were analyzed. The particle size of C. muelleri #862 cells increased linearly with the increasing pH value which increased dramatically by nearly fivefolds after alkaline flocculation. When pH was below 10.5, the absolute value of zeta potential on the surface of C. muelleri #862 increased rapidly, and also the conductivity of the solution declined quickly. The alkaline flocculation of C. muelleri #862 was mainly attributed to the production of Mg(OH)(2) rather than calcium phosphate or calcium hydroxide. For the strain S. quadricauda #507, the cells still existed integrally as normal cells after alkaline flocculation. Firstly, with the increasing of pH in the solution, the absolute value of zeta potential had not declined. When pH was around 10.8, the absolute value of zeta potential had declined abruptly and the solution conductivity was increasing all the time. The cell wall of S. quadricauda #507 with the high content of cellulose I alpha and low crystallization degree was good for the next step of saccharification or oil extraction.
SubtypeArticle
KeywordMicroalgae Harvesting Alkaline Flocculation Mechanism Characterization Techniques
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1007/s12155-015-9712-0
WOS Subject ExtendedEnergy & Fuels ; Environmental Sciences & Ecology
WOS KeywordALGOGENIC ORGANIC-MATTER ; ALGAL FLOCCULATION ; FLUIDIZED-BED ; PH INCREASE ; MAGNESIUM ; MICROALGAE ; FLOTATION ; CELLULOSE ; REMOVAL ; IMPACT
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels ; Environmental Sciences
WOS IDWOS:000376282600025
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/11442
Collection中国科学院广州能源研究所
Affiliation1.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
4.China Agr Univ, Coll Engn, Beijing 100083, Peoples R China
5.State Grid Energy Conservat Serv Ltd, Beijing Biomass Energy Technol Ctr, Beijing 100053, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Huo, Shuhao,Wang, Zhongming,Zhu, Shunni,et al. Process Analysis of Alkaline Flocculation Harvesting for Chaetoceros muelleri and Scenedesmus quadricauda[J]. BIOENERGY RESEARCH,2016,9(2):682-690.
APA Huo, Shuhao.,Wang, Zhongming.,Zhu, Shunni.,Cui, Fengjie.,Zou, Bin.,...&Zhao, Pengxiang.(2016).Process Analysis of Alkaline Flocculation Harvesting for Chaetoceros muelleri and Scenedesmus quadricauda.BIOENERGY RESEARCH,9(2),682-690.
MLA Huo, Shuhao,et al."Process Analysis of Alkaline Flocculation Harvesting for Chaetoceros muelleri and Scenedesmus quadricauda".BIOENERGY RESEARCH 9.2(2016):682-690.
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