title: Efficient harvesting of wet blue-green microalgal biomass by two-aminoclay [AC]-mixture systems.
abstract: Blue-green microalgal blooms have been caused concerns about environmental problems and human-health dangers. For removal of such cyanobacteria, many mechanical and chemical treatments have been trialled. Among various technologies, the flocculation-based harvesting (precipitation) method can be an alternative if the problem of the low yield of recovered biomass at low concentrations of cyanobacteria is solved. In the present study, it was utilized mixtures of magnesium aminoclay [MgAC] and cerium aminoclay [CeAC] with different particle sizes to harvest cyanobacteria feedstocks with ∼100% efficiency within 1h by ten-fold lower loading of ACs compared with single treatments of [MgAC] or [CeAC]. This success was owed to the compact networks of the different-sized-ACs mixture for efficient bridging between microalgal cells. In order to determine the usage potential of biomass harvested with AC, the mass was heat treated under the reduction condition. This system is expected to be profitably utilizable in adsorbents and catalysts.
authors.affiliation: Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
authors.forename: Hye-Min
authors.initials: HM
authors.lastname: Ji
authors.affiliation: Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea.
authors.forename: Hyun Uk
authors.initials: HU
authors.lastname: Lee
authors.affiliation: Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
authors.forename: Eui Jin
authors.initials: EJ
authors.lastname: Kim
authors.affiliation: Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea.
authors.forename: Soonjoo
authors.initials: S
authors.lastname: Seo
authors.affiliation: Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 305-343, Republic of Korea.
authors.forename: Bohwa
authors.initials: B
authors.lastname: Kim
authors.affiliation: Quality Management Team, Korea Institute of Energy Research (KIER), 152 Gajeongro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
authors.forename: Go-Woon
authors.initials: GW
authors.lastname: Lee
authors.affiliation: Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 305-343, Republic of Korea.
authors.forename: You-Kwan
authors.initials: YK
authors.lastname: Oh
authors.affiliation: Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea.
authors.forename: Jun Yeong
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea.
authors.forename: Yun Suk
authors.initials: YS
authors.lastname: Huh
authors.affiliation: Research Analysis Center, Education Support Building W8 KAIST Science Road Yuseong-gu, Daejeon 305-701, Republic of Korea.
authors.forename: Hyun A
authors.initials: HA
authors.lastname: Song
authors.affiliation: Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea. Electronic address: dreamdbs@gachon.ac.kr.
authors.forename: Young-Chul
authors.initials: YC
authors.lastname: Lee
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D011232:Chemical Precipitation; D000458:Cyanobacteria / Q000737:chemistry / Q000302:isolation & purification; D005427:Flocculation; D008274:Magnesium / Q000737:chemistry; D058086:Microalgae / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D008274:Magnesium
keywords: Aminoclays (ACs); Blue-green microalgae; Harvesting; Heat treatment; Mixture