Modeling Study of Crude Oil Enhanced Removal in a Two-Liquid Phase Partitioning Bioreactor
-
Zainab Z. Ismail
and
Ibtihaj A. Abdulrazzak
Abstract
A combined process of solvent extraction and two-phase biodegradation was carried out to remove crude oil from water by mixed cultures, where silicone oil was selected as the organic solvent due to its biocompatibility and non-biodegradability. The crude oil removal and cell growth was experimentally studied. A simple model that combined steady mass transfer equations and dynamic growth kinetics of suspended cells was suggested to follow the entire process. Under the conditions studied, complete removal of crude oil from water was achieved at initial crude oil concentration of 5,000 mg/L. Results revealed that the proposed model satisfactorily described the process as long as crude oil level in the cell medium did not exceed the toxicity limit of suspended cells.
Acknowledgment
The Ministry of Environment, Iraq, is greatly acknowledged for the financial and technical support.
Nomenclature
- a
effective contact area (m2)
- DAB
diffusivity of solute A in solvent B (m2/s)
- J
volumetric mass transfer flux of crude oil (g/m2 h)
- ka a
Individual volumetric mass transfer coefficient for aqueous cell medium, based on the concentration difference (h−1)
- Ka a
Overall volumetric mass transfer coefficient for organic phase based on the concentration difference (h−1)
- koa
Volumetric mass transfer coefficient for aqueous cell medium, based on the concentration difference (h−1)
- Ki
Substrate inhibition constant (g/m3)
- KS
Substrate affinity constant (g/m3)
- MSM
mineral salt media
- M
molecular weight (g/mol)
- N
number of data points
- P
Partition coefficient of crude oil between organic phase and aqueous phase
- S0
initial crude oil level in the system (g/m3)
- Scm
crude oil level in cell medium at any time (g/m3)
- Sicm
crude oil level at the cell medium–organic interface (g/m3)
- Siorg
Organic-side crude oil level adjacent to the cell medium–organic interface (g/m3)
- Sorg
crude oil level in organic phase at any time (g/m3)
- Stotal
total crude oil level in the system at any time (g/m3)
- SD
standard deviation
- t
time (h)
- t90
time required when Stotal = 0.1 S0 (h)
- T
absolute temperature (K)
- TPPB
two-phase partitioning bioreactor
- VA
molar volume of solute A at its normal boiling point (cm3/mol)
- VC
critical volume of solute A (m3)
- X
cell concentration (g/m3)
- Y
cell yield on crude oil substrate (g cell/g crude oil)
Greek letters
- µB
viscosity of solvent B (cp)
- µ
specific cell growth rate (h−1)
- µmax
maximum specific cell growth rate (h−1)
- ΦB
association parameter of solvent B (-)
Subscripts
- exp
experimental value
- model
modeled (predicted) value
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©2015 by De Gruyter
Articles in the same Issue
- Frontmatter
- Reviews
- Fischer–Tropsch Synthesis in Slurry Bubble Column Reactors: Experimental Investigations and Modeling – A Review
- Computational Fluid Dynamics-Based Hydrodynamics Studies in Packed Bed Columns: Current Status and Future Directions
- Research Articles
- Optimized Modular Design and Experiment for Staggered Herringbone Chaotic Micromixer
- Effects of the Types and Addition Amounts of Sludge on the True Rheological Properties of Petroleum Coke Slurry Flowing in Pipelines
- Stabilization of Fast Pyrolysis Oil Derived from Wood through Esterification
- CO2 Sorption by Hydrotalcite-Like Compounds in Dry and Wet Conditions
- Experimental Tests with Rice Straw on a Conical Square-Based Spouted Bed Reactor
- Kinetics for an Optimized Biosynthesis of Silver Nanoparticles Using Alfalfa Extracts
- Assessing the Feasibility of Optical Probe in Phase Holdup Measurements and Flow Regime Identification
- Modeling Study of Crude Oil Enhanced Removal in a Two-Liquid Phase Partitioning Bioreactor
- Application of Deep Eutectic Solvent (DES) as a Reaction Media for the Esterification of Acrylic Acid with n-Butanol
- Transesterification of Degummed Jatropha curcas Oil Using Tri-potassium Phosphate as Base Catalyst
- Process Intensification for Production of Ethyl Lactate from Fermentation-Derived Magnesium Lactate: A Preliminary Design
- A Study on the Production of Isophthalic Acid from M-xylene under the Catalysis of Cobalt and H3PW12O40/Carbon Modified by HNO3 Solution
- Statistical Medium Optimization for the Increased Production of Recombinant Phytase in the Fed-Batch Cultivation of Pichia pastoris
- Catalytic Degradation of Pyrrole in Aqueous Solution by Cu/SBA-15
Articles in the same Issue
- Frontmatter
- Reviews
- Fischer–Tropsch Synthesis in Slurry Bubble Column Reactors: Experimental Investigations and Modeling – A Review
- Computational Fluid Dynamics-Based Hydrodynamics Studies in Packed Bed Columns: Current Status and Future Directions
- Research Articles
- Optimized Modular Design and Experiment for Staggered Herringbone Chaotic Micromixer
- Effects of the Types and Addition Amounts of Sludge on the True Rheological Properties of Petroleum Coke Slurry Flowing in Pipelines
- Stabilization of Fast Pyrolysis Oil Derived from Wood through Esterification
- CO2 Sorption by Hydrotalcite-Like Compounds in Dry and Wet Conditions
- Experimental Tests with Rice Straw on a Conical Square-Based Spouted Bed Reactor
- Kinetics for an Optimized Biosynthesis of Silver Nanoparticles Using Alfalfa Extracts
- Assessing the Feasibility of Optical Probe in Phase Holdup Measurements and Flow Regime Identification
- Modeling Study of Crude Oil Enhanced Removal in a Two-Liquid Phase Partitioning Bioreactor
- Application of Deep Eutectic Solvent (DES) as a Reaction Media for the Esterification of Acrylic Acid with n-Butanol
- Transesterification of Degummed Jatropha curcas Oil Using Tri-potassium Phosphate as Base Catalyst
- Process Intensification for Production of Ethyl Lactate from Fermentation-Derived Magnesium Lactate: A Preliminary Design
- A Study on the Production of Isophthalic Acid from M-xylene under the Catalysis of Cobalt and H3PW12O40/Carbon Modified by HNO3 Solution
- Statistical Medium Optimization for the Increased Production of Recombinant Phytase in the Fed-Batch Cultivation of Pichia pastoris
- Catalytic Degradation of Pyrrole in Aqueous Solution by Cu/SBA-15
