IHB OpenIR  > 藻类生物技术和生物能源研发中心  > 期刊论文
Critical Evaluation and Modeling of Algal Harvesting Using Dissolved Air Flotation
Zhang, Xuezhi1; Hewson, John C.2; Amendola, Pasquale1; Reynoso, Monica1; Sommerfeld, Milton1; Chen, Yongsheng3; Hu, Qiang4
2014-12-01
Source PublicationBIOTECHNOLOGY AND BIOENGINEERING
ISSN0006-3592
Volume111Issue:12Pages:2477-2485
AbstractIn this study, Chlorella zofingiensis harvesting by dissolved air flotation (DAF) was critically evaluated with regard to algal concentration, culture conditions, type and dosage of coagulants, and recycle ratio. Harvesting efficiency increased with coagulant dosage and leveled off at 81%, 86%, 91%, and 87% when chitosan, Al3+, Fe3+, and cetyl trimethylammonium bromide (CTAB) were used at dosages of 70, 180, 250, and 500 mg g(-1), respectively. The DAF efficiency-coagulant dosage relationship changed with algal culture conditions. Evaluation of the influence of the initial algal concentration and recycle ratio revealed that, under conditions typical for algal harvesting, it is possible that the number of bubbles is insufficient. A DAF algal harvesting model was developed to explain this observation by introducing mass-based floc size distributions and a bubble limitation into the white water blanket model. The model revealed the importance of coagulation to increase floc-bubble collision and attachment, and the preferential interaction of bubbles with larger flocs, which limited the availability of bubbles to the smaller sized flocs. The harvesting efficiencies predicted by the model agree reasonably with experimental data obtained at different Al3+ dosages, algal concentrations, and recycle ratios. Based on this modeling, critical parameters for efficient algal harvesting were identified. (C) 2014 Wiley Periodicals, Inc.
SubtypeArticle
KeywordFlotation Model Coagulant Flocs Bubble Chlorella
DOI10.1002/bit.25300
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaBiotechnology & Applied Microbiology
WOS SubjectBiotechnology & Applied Microbiology
WOS IDWOS:000344388600012
WOS KeywordCHLORELLA-ZOFINGIENSIS ; MICROFLOTATION ; FLOCCULATION
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/23810
Collection藻类生物技术和生物能源研发中心_期刊论文
Affiliation1.Arizona State Univ, Dept Appl Sci & Math, Mesa, AZ 85212 USA
2.Sandia Natl Labs, Albuquerque, NM 87185 USA
3.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA
4.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xuezhi,Hewson, John C.,Amendola, Pasquale,et al. Critical Evaluation and Modeling of Algal Harvesting Using Dissolved Air Flotation[J]. BIOTECHNOLOGY AND BIOENGINEERING,2014,111(12):2477-2485.
APA Zhang, Xuezhi.,Hewson, John C..,Amendola, Pasquale.,Reynoso, Monica.,Sommerfeld, Milton.,...&Hu, Qiang.(2014).Critical Evaluation and Modeling of Algal Harvesting Using Dissolved Air Flotation.BIOTECHNOLOGY AND BIOENGINEERING,111(12),2477-2485.
MLA Zhang, Xuezhi,et al."Critical Evaluation and Modeling of Algal Harvesting Using Dissolved Air Flotation".BIOTECHNOLOGY AND BIOENGINEERING 111.12(2014):2477-2485.
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