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Improvement of microalgae harvesting by magnetic nanocomposites coated with polyethylenimine
Alternative TitleChem. Eng. J.
Hu, Yi-Ru1,2,3; Guo, Chen1,2,3; Wang, Feng1,2; Wang, Shi-Kai1,2,3; Pan, Feng1,2; Liu, Chun-Zhao1,2
2014-04-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume242Issue:1Pages:341-347
AbstractFe3O4 nanoparticles were functionally coated with polyethylenimine (PEI), which contained a high concentration of -NH2 groups, for the efficient harvesting of microalgae. The functional magnetic nanocomposites were 12 nm in diameter and 69.77 emu/g of saturation magnetization. Using a nanocomposite dosage of 20 mg/L for harvesting Chlorella ellipsoidea cells, a harvesting efficiency of 97% was achieved within 2 min. Increasing the temperature resulted in an increase in harvesting efficiency. The adsorption isotherm data fit the Langmuir model, suggesting that the adsorption was monolayer. The adsorption capacity of the Fe3O4-PEI nanocomposites for the microalgal cells reached up to 93.46 g-DCW/g-nanocomposites through electrostatic attraction and nanoscale interactions between the nanocomposites and the microalgal cells. The functional nanocomposites provide a base for efficient microalgae harvesting with clear advantages such as rapid execution, low energy consumption, and improves water-use in the algal harvesting process. (C) 2013 Elsevier B.V. All rights reserved.; Fe3O4 nanoparticles were functionally coated with polyethylenimine (PEI), which contained a high concentration of -NH2 groups, for the efficient harvesting of microalgae. The functional magnetic nanocomposites were 12 nm in diameter and 69.77 emu/g of saturation magnetization. Using a nanocomposite dosage of 20 mg/L for harvesting Chlorella ellipsoidea cells, a harvesting efficiency of 97% was achieved within 2 min. Increasing the temperature resulted in an increase in harvesting efficiency. The adsorption isotherm data fit the Langmuir model, suggesting that the adsorption was monolayer. The adsorption capacity of the Fe3O4-PEI nanocomposites for the microalgal cells reached up to 93.46 g-DCW/g-nanocomposites through electrostatic attraction and nanoscale interactions between the nanocomposites and the microalgal cells. The functional nanocomposites provide a base for efficient microalgae harvesting with clear advantages such as rapid execution, low energy consumption, and improves water-use in the algal harvesting process. (C) 2013 Elsevier B.V. All rights reserved.
KeywordMagnetic Separation Fe3o4-pei Nanocomposites Chlorella Ellipsoidea Microalgae Harvesting
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2013.12.066
URL查看原文
Indexed BySCI
Language英语
WOS KeywordWASTE-WATER ; SEPARATION ; NANOPARTICLES ; ADSORPTION ; BIOMASS ; NANNOCHLOROPSIS ; REMOVAL
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000333787000040
Citation statistics
Cited Times:50[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/10915
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hu, Yi-Ru,Guo, Chen,Wang, Feng,et al. Improvement of microalgae harvesting by magnetic nanocomposites coated with polyethylenimine[J]. CHEMICAL ENGINEERING JOURNAL,2014,242(1):341-347.
APA Hu, Yi-Ru,Guo, Chen,Wang, Feng,Wang, Shi-Kai,Pan, Feng,&Liu, Chun-Zhao.(2014).Improvement of microalgae harvesting by magnetic nanocomposites coated with polyethylenimine.CHEMICAL ENGINEERING JOURNAL,242(1),341-347.
MLA Hu, Yi-Ru,et al."Improvement of microalgae harvesting by magnetic nanocomposites coated with polyethylenimine".CHEMICAL ENGINEERING JOURNAL 242.1(2014):341-347.
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