TY - JOUR
T1 - Nano magnetite assisted flocculation for efficient harvesting of lutein and lipid producing microalgae biomass
AU - Patel, Anil Kumar
AU - Kumar, Prashant
AU - Chen, Chiu Wen
AU - Tambat, Vaibhav Sunil
AU - Nguyen, Thanh Binh
AU - Hou, Chih Yao
AU - Chang, Jo Shu
AU - Dong, Cheng Di
AU - Singhania, Reeta Rani
N1 - Funding Information:
AKP, RRS, CWC, and CDD would like to acknowledge Taiwan’s MOST for funding support (Ref. No. 109-2222-E-992-002). JSC also acknowledges the financial support of Taiwan’s MOST under grant nos. 110-3116-F-006 -003, 110-2221-E-029 -004 -MY3, and 110-2621-M-029 -001.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/11
Y1 - 2022/11
N2 - For commercial scale algal biorefining, harvesting cost is a major bottleneck. Thus, a cost-effective, less-energy intensive, and efficient harvesting method is being investigated. Among several harvesting methods, magnetic flocculation offers the benefits of modest operation, energy savings and quick separation. This study aims to develop novel magnetite-(Fe3O4) nanoparticles (MNPs) of 20 nm average size and their high reusability potential to reduce the harvesting cost of microalgae biomass. The MNPs were synthesized and characterized using FTIR, Zeta analyzer, and SEM before performing on Chlorella sorokiniana Kh12 and Tu5. For maximum harvesting efficiency >99%, the optimal culture pH, MNPs concentration, and agitation speed were 3, 200 mg/L, and 450 rpm, respectively. Subsequently, MNPs were recovered via alkaline treatment and reused up to 5 cycles as they retained their reactivity and harvesting efficiency. The studied MNPs-based harvesting method could be adopted at a commercial scale for cost-effective algae biorefinery in the future.
AB - For commercial scale algal biorefining, harvesting cost is a major bottleneck. Thus, a cost-effective, less-energy intensive, and efficient harvesting method is being investigated. Among several harvesting methods, magnetic flocculation offers the benefits of modest operation, energy savings and quick separation. This study aims to develop novel magnetite-(Fe3O4) nanoparticles (MNPs) of 20 nm average size and their high reusability potential to reduce the harvesting cost of microalgae biomass. The MNPs were synthesized and characterized using FTIR, Zeta analyzer, and SEM before performing on Chlorella sorokiniana Kh12 and Tu5. For maximum harvesting efficiency >99%, the optimal culture pH, MNPs concentration, and agitation speed were 3, 200 mg/L, and 450 rpm, respectively. Subsequently, MNPs were recovered via alkaline treatment and reused up to 5 cycles as they retained their reactivity and harvesting efficiency. The studied MNPs-based harvesting method could be adopted at a commercial scale for cost-effective algae biorefinery in the future.
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U2 - 10.1016/j.biortech.2022.128009
DO - 10.1016/j.biortech.2022.128009
M3 - Article
C2 - 36162780
AN - SCOPUS:85140272518
SN - 0960-8524
VL - 363
JO - Agricultural Wastes
JF - Agricultural Wastes
M1 - 128009
ER -
