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Hydrodynamic characteristics and mixing behaviour of Sclerotium glucanicum culture fluids in an airlift reactor with an internal loop used for scleroglucan production
Alternative TitleJ. Ind. Microbiol. Biotechnol.
Kang, X; Wang, H; Wang, Y; Harvey, LM; McNeil, B
2001-10-01
Source PublicationJOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
ISSN1367-5435
Volume27Issue:4Pages:208-214
AbstractThe filamentous fungus, Sclerotium glucanicum NRRL 3006, was cultivated in a 0.008 m(3) airlift bioreactor with internal recirculation loop (ARL-IL) for production of the biopolymer, scleroglucan. The rheological behaviour of the culture fluid was characterised by measurement of the fluid consistency coefficient (K) and the flow behaviour index (n). Based on these measurements, the culture fluid changed from a low viscosity Newtonian system early in the process, to a viscous non-Newtonian (pseudoplastic) system. In addition, reactor hydrodynamics and mixing behaviour were characterised by measurement of whole mean gas hold-up (epsilon (g)), liquid re-circulation velocity (U-ld) and mixing time (t(m)). Under identical process conditions, the effects of the viscosity of the culture fluid and airflow rate on epsilon (g), U-ld and t(m) were examined and empirical correlations for epsilon (g), U-ld and t(m) with both superficial velocity U-g and consistency coefficient K were obtained and expressed separately. The correlations obtained are likely to describe the behaviour of real fungal culture fluids more accurately than previous correlations based on Newtonian or simulated non-Newtonian systems.; The filamentous fungus, Sclerotium glucanicum NRRL 3006, was cultivated in a 0.008 m(3) airlift bioreactor with internal recirculation loop (ARL-IL) for production of the biopolymer, scleroglucan. The rheological behaviour of the culture fluid was characterised by measurement of the fluid consistency coefficient (K) and the flow behaviour index (n). Based on these measurements, the culture fluid changed from a low viscosity Newtonian system early in the process, to a viscous non-Newtonian (pseudoplastic) system. In addition, reactor hydrodynamics and mixing behaviour were characterised by measurement of whole mean gas hold-up (epsilon (g)), liquid re-circulation velocity (U-ld) and mixing time (t(m)). Under identical process conditions, the effects of the viscosity of the culture fluid and airflow rate on epsilon (g), U-ld and t(m) were examined and empirical correlations for epsilon (g), U-ld and t(m) with both superficial velocity U-g and consistency coefficient K were obtained and expressed separately. The correlations obtained are likely to describe the behaviour of real fungal culture fluids more accurately than previous correlations based on Newtonian or simulated non-Newtonian systems.
KeywordScleroglucan Airlift Reactor With An Internal Loop (Alr-il) Gas Hold-up Liquid Recirculation Velocity Mixing Time
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
URL查看原文
Indexed BySCI
Language英语
WOS KeywordBUBBLE COLUMN ; BIOREACTORS ; VELOCITY
WOS Research AreaBiotechnology & Applied Microbiology
WOS SubjectBiotechnology & Applied Microbiology
WOS IDWOS:000171716700004
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5748
Collection研究所(批量导入)
Affiliation1.Univ Strathclyde, Dept Biosci & Biotechnol, Strathclyde Fermentat Ctr, Glasgow G1 1XW, Lanark, Scotland
2.Chinese Acad Sci, Inst Chem Met, State Key Lab Biochem Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Kang, X,Wang, H,Wang, Y,et al. Hydrodynamic characteristics and mixing behaviour of Sclerotium glucanicum culture fluids in an airlift reactor with an internal loop used for scleroglucan production[J]. JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY,2001,27(4):208-214.
APA Kang, X,Wang, H,Wang, Y,Harvey, LM,&McNeil, B.(2001).Hydrodynamic characteristics and mixing behaviour of Sclerotium glucanicum culture fluids in an airlift reactor with an internal loop used for scleroglucan production.JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY,27(4),208-214.
MLA Kang, X,et al."Hydrodynamic characteristics and mixing behaviour of Sclerotium glucanicum culture fluids in an airlift reactor with an internal loop used for scleroglucan production".JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY 27.4(2001):208-214.
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