Knowledge Management System Of Institute of process engineering,CAS
| Improvement of microalgae harvesting by magnetic nanocomposites coated with polyethylenimine | |
| Alternative Title | Chem. 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 Publication | CHEMICAL ENGINEERING JOURNAL
 |
| ISSN | 1385-8947 |
| Volume | 242Issue:1Pages:341-347 |
| Abstract | 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.; 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. |
| Keyword | Magnetic Separation Fe3o4-pei Nanocomposites Chlorella Ellipsoidea Microalgae Harvesting |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/j.cej.2013.12.066 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | WASTE-WATER ; SEPARATION ; NANOPARTICLES ; ADSORPTION ; BIOMASS ; NANNOCHLOROPSIS ; REMOVAL |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| WOS ID | WOS:000333787000040 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/10915 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.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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| Improvement of micro（923KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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