title: Nickel oxide nanoparticle-based method for simultaneous harvesting and disruption of microalgal cells.
abstract: 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.
authors.affiliation: Department of Chemical and Biomolecular Engineering, KAIST, Yuseong-Gu, Guseong-Duong, Daejeon 305-701, Republic of Korea.
authors.forename: Wen-Can
authors.initials: WC
authors.lastname: Huang
authors.affiliation: Department of Chemical and Biomolecular Engineering, KAIST, Yuseong-Gu, Guseong-Duong, Daejeon 305-701, Republic of Korea. Electronic address: kjd@kaist.ac.kr.
authors.forename: Jong-Duk
authors.initials: JD
authors.lastname: Kim
mesh_terms: D056804:Biofuels; D050356:Lipid Metabolism; D053768:Metal Nanoparticles / Q000737:chemistry*; D058086:Microalgae / Q000737:chemistry / Q000378:metabolism; D009532:Nickel / Q000737:chemistry*
chemical_list: D056804:Biofuels; D009532:Nickel; C028007:nickel monoxide
keywords: Cell disruption; Fatty acid methyl ester; Harvesting; Metal oxide nanoparticles; Microalgae; Nickel oxide nanoparticles