Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae | |
Liu, Pei-Rui ; Wang, Ting ; Yang, Zi-Yu ; Hong, Yu ; Hou, Yang-Long | |
刊名 | ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS |
2017 | |
关键词 | Porous Fe3O4 microspheres Long-chain poly-arginine Polymer molecular weight Magnetic harvesting Chlorella sp HQ MAGNETOPHORETIC SEPARATION MARINE MICROALGAE MOLECULAR-WEIGHT PARTICLE-SIZE CHLORELLA SP NANOPARTICLES WATER REMOVAL BIOFUELS RECOVERY |
DOI | 10.1016/j.algal.2017.08.025 |
英文摘要 | Considering the porous characteristics of magnetic porous Fe3O4 microspheres, this study aims to utilize longchain poly-arginine (PA) to obtain PA-modified porous Fe3O4 microspheres (p-Fe3O4@PA). The microspheres possessed a loose porous structure on the surface, and the average pore size was 224.2 angstrom. The harvesting efficiency for Chlorella sp. HQ improved markedly compared with that of p-Fe3O4 after modification with three PAs with different molecular weights. p-Fe3O4@PA-2 (PA molecular weight: 15,000-70,000) had the best performance with a decreasing dosage from 300 mg L-1 to 10 mg L-1. The results indicated that PA modification at a higher molecular weight could promote microalgae adsorption, whereas PA modification of an excessively high molecular weight (> 70,000) was not conducive to microalgae harvesting. The modification percentage of pFe(3)O(4)@ PA (57.9%) provided abundant adsorption media and active sites for Chlorella sp. HQ adsorption. Bridging flocculation and hydrogen bonding between Chlorella sp. HQ and p-Fe3O4@PA greatly enhanced harvesting efficiency. In addition, the p-Fe3O4@PA could maintain good cycling stability because of the relatively large size of the microspheres.; National Natural Science Foundation [51571034]; Beijing Nova Leading Talents Cultivation Program [Z1511000003150147]; SCI(E); ARTICLE; 99-108; 27 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/484555] |
专题 | 工学院 |
推荐引用方式 GB/T 7714 | Liu, Pei-Rui,Wang, Ting,Yang, Zi-Yu,et al. Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae[J]. ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,2017. |
APA | Liu, Pei-Rui,Wang, Ting,Yang, Zi-Yu,Hong, Yu,&Hou, Yang-Long.(2017).Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae.ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS. |
MLA | Liu, Pei-Rui,et al."Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae".ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS (2017). |
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