Browse > Article
http://dx.doi.org/10.11001/jksww.2015.29.6.643

Feasibility Study on Electro Coagulation Flocculation for Microalgae Harvesting  

Lee, Seok Min (Department of Environmental Engineering, Center for Environmental Studies, Kyung Hee University)
Cho, Jae Hyung (Department of Environmental Engineering, Center for Environmental Studies, Kyung Hee University)
Noh, Kyung Ho (Department of Environmental Engineering, Center for Environmental Studies, Kyung Hee University)
Zhang, Shan (Department of Environmental Engineering, Center for Environmental Studies, Kyung Hee University)
Hwang, Hyeon-Jeong (Department of Environmental Engineering, Center for Environmental Studies, Kyung Hee University)
Nam, guisook (Department of Environmental Engineering, Center for Environmental Studies, Kyung Hee University)
Hwang, Sun-Jin (Department of Environmental Engineering, Center for Environmental Studies, Kyung Hee University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.29, no.6, 2015 , pp. 643-649 More about this Journal
Abstract
Although microalgae are considered as a promising feedstock for biofuels, cost-efficient harvesting of microalgae needs to be significantly improved. In this study, the use of electro coagulation as a more rapid flocculation method for harvesting a freshwater (Scenedesmus dimorphus) microalgae species was evaluated. The results showed that, electro coagulation was shown to be more efficient using an aluminum anode than using an iron anode. And optimum conditions of electro coagulation for harvesting Scenedesmus dimorphus were found. The optimum stirring speed was 100 rpm and optimum pH was 5. Furthermore, the current density which the fastest and highest recovery efficiency is achieved at $30A/m^2$, while the highest energy efficiency was achieved at $10A/m^2$. A the rapid and high recovery efficiency indicate that electro coagulation is a particularly attractive technology for harvesting microalgae.
Keywords
Electro coagulation; Harvesting; Microalgae; Scenedesmus dimorphus;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Brennan, L., Owende, P. (2010) Biofuels from microalgae A review of technologies for production, processing, and extractions of biofuels and co-products. Renewable and sustainable energy reviews, Vol. 14, pp 557-577.   DOI
2 Canizares, P., Martinez, F., Jimenez, C., Lobato, J., Rodrigo, MA. (2006) Coagulation and electrocoagulation of wastes polluted with dyes. Environ Sci Technol. Vol. 40(20), pp 6418-6424.   DOI
3 Chisti, Y. (2007) Biodiesel from microalgae. Biotechnology Advances, Vol. 25, pp 294-306   DOI
4 Rubio, FC., Camacho, FG., Sevilla, JM., Chisti, Y., Grima, EM., (2003) A mechanistic model of photosynthesis in microalgae, Biotechnology and bioengineering, Vol 81(4), pp 459-473.   DOI
5 Han, Y.H., Lee, J.S., Kwak, J.K., Lee, E.H., Cho, M.G., (1999) High-density cultivation of microalgae using microencapsulation. Journal of Korea Fisheries and Aquatic Sciences. Vol 32(2), pp 186-191.
6 Tumsri, K., Chavalparit, O., (2011) Optimizing electrocoagulation-electroflotation process for algae removal. 2011 2nd international conference on environmental science and technology. Vol 6(2). pp 452-456
7 Kittel, C. (1976) 5th Ed., John Wiley & Sons, Inc. Introduction to Solid State Physics, pp 167
8 U.S. DOE. (2010) National algal biofuels technology roadmap. U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Biomass Program, Report no. DOE/EE-0332.
9 Udman N, Qi Y, Danquah MK, Forde GM, Hoadley A. (2010) Dewatering of microalgal cultures: a magor bottleneck to algae-based fuels, Renew Sustatin Energy, Vol. 2:012701   DOI
10 Greenwell HC., Laurens LML., Shields RJ., Lovitt RW., Flynn KJ., (2010) Placing microalgae on the biofuels priority list: a review of the technological challenges, J R Soc Interface, Vol. 7, 703.26   DOI
11 Gudin, C., Therpenier, C. (1986) Bioconversion of solar energy into organic chemicals by microalgae, Advandces in biotechnological processes, Vol. 6, pp 73-110
12 Mouedhen, G., Feki, M., De Petris Wery, M., Ayedi. H.F.. (2008) Behavior of aluminum electrodes in electrocoagulation process. J Hazard Mater, Vol. 150, pp 124-135.   DOI
13 Mollah MY, Morkovsky P, Gomes JAG, Kesmez M, Parga J, Cocke DL. (2004) Fundamentals, present and future perspectives of electrocoagulation. J Hazard Mater, Vol. 114(1-3), pp 199-210.   DOI
14 Zongo, I., Leclerc, JP., Maiga, HA., Wethe, J., Lapicque, F. (2009) Removal of hexavalent chromium from industrial wastewater by electrocoagulation : A comprehensive comparison of aluminium and iron electrodes. Separation and Purification Technology. Vol 66, pp 159-166   DOI