Investigation of α-Amylase Production with Bacillus amyloliquefaciens in a Cocurrent Downflow Contacting Reactor
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Ramazan Orhan
und
Gülbeyi Dursun
Abstract
The cocurrent downflow contacting reactor (CDCR) has a high oxygen transfer rate by providing the effective the gas-liquid contact. This property is an advantage for enzyme production. In this study, the CDCR was used for the production of α-amylase by Bacillus amyloliquefaciens for different starch concentrations in the range of 7.5–17.5 g l–1 at constant air and liquid flow rates. The values of the volumetric oxygen transfer coefficient (kLa) and specific oxygen uptake rate (
Funding statement: This study was supported by the Research Foundation of Fırat University under Project No. FÜBAP-1313, Turkey.
Nomenclature
- IU
International Unit (IU.ml–1)
- C*
equilibrium dissolved oxygen concentration (mg l–1)
- CL
dissolved oxygen concentration in the liquid phase (mg l–1)
- Cx
biomass concentration (g dry cell l–1)
- kLa
volumetric oxygen mass transfer coefficient (h−1)
- OTR
oxygen transfer rate
- OUR
oxygen uptake rate
specific oxygen uptake rate (mg O2 g–1cell h–1)
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©2016 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Catalytic Activity of Bimetallic Cu-Ag/MgO-SiO2 Toward the Conversion of Ethanol to 1,3-Butadiene
- Heat Transfer Studies in Ejector-induced Downflow Bubble Column
- Experimental Study on Atomizing and Reaction Performance of Pressure Swirl Nozzles in Ethoxylation Reactor
- Study of the Hydrodynamics and Mass Transfer Coefficient in a 2D Mimicked FT Slurry Bubble Columns for Alternative Clean Energy and Chemical Production
- Simultaneous Removal of Organic and Inorganic Pollutants From Landfill Leachate Using Sea Mango Derived Activated Carbon via Microwave Induced Activation
- Computational Fluid Dynamics Simulations of Lean Premixed Methane-Air Flame in a Micro-Channel Reactor Using Different Chemical Kinetics
- Membrane Aerated Biofilm Reactors for Thermomechanical Pulping Pressate Treatment
- Mixing of Shear Thinning Fluids in Cylindrical Tanks: Effect of the Impeller Blade Design and Operating Conditions
- Influence of Support Structural Characteristics on Long-term Performance of Pd-Ag/α-Al2O3 Catalyst for Tail-end Acetylene Selective Hydrogenation
- Investigation of Key Factors and Their Interactions in MTO Reaction by Statistical Design of Experiments
- Hydrogen Production via Glycerol Reforming over Pt/SiO2 Nanocatalyst in a Spiral-Shaped Microchannel Reactor
- Experimental Design-Assisted Investigation of Light Olefins Production Over Ceria-Altered HZSM-5 Catalysts by Naphtha Catalytic Steam Cracking
- Investigation of α-Amylase Production with Bacillus amyloliquefaciens in a Cocurrent Downflow Contacting Reactor
- Gaseous Hydrocarbon Synfuels from Renewable Electricity via H2/CO2-Flexibility of Fixed-Bed Catalytic Reactors
- Natural Convective Flow Analysis For Nanofluids With Reynold,s Model of Viscosity
Artikel in diesem Heft
- Frontmatter
- Catalytic Activity of Bimetallic Cu-Ag/MgO-SiO2 Toward the Conversion of Ethanol to 1,3-Butadiene
- Heat Transfer Studies in Ejector-induced Downflow Bubble Column
- Experimental Study on Atomizing and Reaction Performance of Pressure Swirl Nozzles in Ethoxylation Reactor
- Study of the Hydrodynamics and Mass Transfer Coefficient in a 2D Mimicked FT Slurry Bubble Columns for Alternative Clean Energy and Chemical Production
- Simultaneous Removal of Organic and Inorganic Pollutants From Landfill Leachate Using Sea Mango Derived Activated Carbon via Microwave Induced Activation
- Computational Fluid Dynamics Simulations of Lean Premixed Methane-Air Flame in a Micro-Channel Reactor Using Different Chemical Kinetics
- Membrane Aerated Biofilm Reactors for Thermomechanical Pulping Pressate Treatment
- Mixing of Shear Thinning Fluids in Cylindrical Tanks: Effect of the Impeller Blade Design and Operating Conditions
- Influence of Support Structural Characteristics on Long-term Performance of Pd-Ag/α-Al2O3 Catalyst for Tail-end Acetylene Selective Hydrogenation
- Investigation of Key Factors and Their Interactions in MTO Reaction by Statistical Design of Experiments
- Hydrogen Production via Glycerol Reforming over Pt/SiO2 Nanocatalyst in a Spiral-Shaped Microchannel Reactor
- Experimental Design-Assisted Investigation of Light Olefins Production Over Ceria-Altered HZSM-5 Catalysts by Naphtha Catalytic Steam Cracking
- Investigation of α-Amylase Production with Bacillus amyloliquefaciens in a Cocurrent Downflow Contacting Reactor
- Gaseous Hydrocarbon Synfuels from Renewable Electricity via H2/CO2-Flexibility of Fixed-Bed Catalytic Reactors
- Natural Convective Flow Analysis For Nanofluids With Reynold,s Model of Viscosity
