期刊
BIORESOURCE TECHNOLOGY
卷 149, 期 -, 页码 575-578出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.09.074
关键词
Chitosan; Magnetic nanoparticle; Microalgae; Harvesting; Medium recycling
资金
- Ministry of Education, Science and Technology [ABC-2012-053880]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Knowledge Economy (MKE) [2012-T-100201516]
- Development of Biohydrogen Production Technology using the Hyperthermophilic Archaea program of the Ministry of Oceans and Fisheries
- Advanced Biomass R&D Center (ABC) of Global Frontier Project
- Korea Evaluation Institute of Industrial Technology (KEIT) [20122010200010] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Korea Institute of Marine Science & Technology Promotion (KIMST) [200902132] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Council of Science & Technology (NST), Republic of Korea [KIER-B32425] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2012M3A6A2053880] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The consumption of energy and resources such as water in the cultivation and harvesting steps should be minimized to reduce the overall cost of biodiesel production from microalgae. Here we present a biocompatible and rapid magnetophoretic harvesting process of oleaginous microalgae by using chitosan-Fe3O4 nanoparticle composites. Over 99% of microalgae was harvested by using the composites and the external magnetic field without changing the pH of culture medium so that it may be reused for microalgal culture without adverse effect on the cell growth. Depending on the working volume (20-500 mL) and the strength of surface magnetic-field (3400-9200 G), the process of harvesting microalgae took only 2-5 min. The method presented here not only utilizes permanent magnets without additional energy for fast harvesting but also recycles the medium effectively for further cultivation of microalgae, looking ahead to a large scale economic microalgae-based biorefinement. (C) 2013 Elsevier Ltd. All rights reserved.
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