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Nickel oxide nanoparticle-based method for simultaneous harvesting and disruption of microalgal cells
- Huang, Wen-Can, Kim, Jong-Duk
- Bioresource technology 2016 v.218 pp. 1290-1293
- biodiesel, cell harvesting, drying, energy, equipment, lipids, microalgae, nanoparticles, nickel, pH, water content
- Microalgae biodiesel is considered one of the most promising renewable fuels. However, the high cost of the downstream process is a major barrier to large-scale microalgal lipid production. In this study, a novel approach based on nickel oxide nanoparticles (NiO NPs) was developed and its effectiveness for simultaneous harvesting and cell disruption in microalgal lipid production was determined. NiO NPs exhibited a microalgal harvesting efficiency of 98.75% in 1min at pH 7. Moreover, after treating with NiO NPs for 96h, the lipid extraction efficiency of microalgae (with 80% water content) reached 91.08% and was 208.37% compared to that without NiO treatment. This approach is simple and does not necessitate drying; furthermore, no equipment with high energy consumption was required.