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Accurately measurement and efficiently recovery of ionic liquid in energy utilization of microalgae
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-6279-4446
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-5014-3275
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2019 (English)In: Energy Procedia, Elsevier Ltd , 2019, Vol. 158, p. 1337-1341Conference paper, Published paper (Refereed)
Abstract [en]

Chlorella vulgais, a kind of micro-alagae, is an attracting feedstock for bioenergy production, such as biodiesel and biogas. But its tough cell wall structure is the main obstacle to efficiently extracting lipids and other biomass. Ionic liquid (IL) can be used to hydrolyze its cell-wall. However, due to its high cost and toxicity, it is important to recover IL as much as possible. Therefore, a method that can accurately measure the content of ILs, is urgently needed. In this work, two common methods that are used to measure the content of ILs: equimolar titration method and ultraviolet absorbance spectra were compared. The results show that equimolar titration method is not available for trace quantity analysis of ionic liquids as the endpoint of titration is hard to be identified at low IL content (<10 mg/L); while UV absorbance spectra method can be used at low IL contents, whereas, it may result in big deviations. To further improve the accuracy of UV absorbance spectra method, concentrating the sample could be a potential solution.

Place, publisher, year, edition, pages
Elsevier Ltd , 2019. Vol. 158, p. 1337-1341
Keywords [en]
Chlorella, Industrial ionic liquid, Lipids extraction, Biomass, Energy utilization, Lipids, Titration, Bioenergy productions, Cell wall structure, Cell walls, Micro-algae, Quantity analysis, Ultraviolet absorbance, UV absorbance spectra, Ionic liquids
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-43193DOI: 10.1016/j.egypro.2019.01.328ISI: 000471031701108Scopus ID: 2-s2.0-85063873518OAI: oai:DiVA.org:mdh-43193DiVA, id: diva2:1306909
Conference
10th International Conference on Applied Energy, ICAE 2018, 22 August 2018 through 25 August 2018
Available from: 2019-04-25 Created: 2019-04-25 Last updated: 2019-07-11Bibliographically approved

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Li, HailongSchwede, Sebastian

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