Issue 8, 2014

Magnetophoretic separation of microalgae: the role of nanoparticles and polymer binder in harvesting biofuel

Abstract

Magnetophoretic separation of Chlorella sp. microalgal biomass is proven to be a feasible downstream processing technology for biofuel production. Kinetic study of cells separation in real time reveals the major steps involved for each stage of low gradient magnetic separation (LGMS) with field gradient (∇B) less than 80 T m−1. Transmission and scanning electron microscopy (TEM & SEM) together with Fourier transforms infrared (FTIR) spectra analysis are employed to confirm the full attachment of surface functionalized iron oxide nanoparticles (SF-IONPs) onto microalgal cells and how the particles distributed on the cell's surfaces. From the cross section TEM images of cells, IONPs shown the tendency to be internalized into Chlorella sp. cells but not affect the biofuel quality.

Graphical abstract: Magnetophoretic separation of microalgae: the role of nanoparticles and polymer binder in harvesting biofuel

Supplementary files

Article information

Article type
Paper
Submitted
31 Oct 2013
Accepted
06 Dec 2013
First published
06 Dec 2013

RSC Adv., 2014,4, 4114-4121

Magnetophoretic separation of microalgae: the role of nanoparticles and polymer binder in harvesting biofuel

P. Y. Toh, B. W. Ng, C. H. Chong, A. L. Ahmad, J. Yang, C. J. Chieh Derek and J. Lim, RSC Adv., 2014, 4, 4114 DOI: 10.1039/C3RA46298F

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