A Mathematical Modeling and Experimental Study on Adsorptive Desulfurization of Model Gasoline Using Synthesized Ni–Y and Ce–Y Zeolites
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Maryam Montazerolghaem
und
Fakhry Seyedeyn-Azad
Abstract
In this study, Ni–Y and Ce–Y zeolites are prepared using synthesized Na–Y zeolite through solid-state ion-exchange method. The adsorptive desulfurization of a model gasoline containing 194, 116 and 72 ppmw sulfur is evaluated in a batch system under ambient conditions. A dynamic model is established in order to investigate the performance of the adsorption process. The model predictions are compared with the obtained experimental results for thiophene adsorption on Ni–Y and Ce–Y zeolites from model solution containing different concentrations of thiophene, and a good agreement is observed. The model parameters: diffusivity and mass transfer coefficient are estimated by comparing the model predictions and experimental data.
Acknowledgment
The support from the Isfahan refinery (R&D and Laboratory) is gratefully acknowledged.
Nomenclature
- a
specific surface area, m2 g−1
- CA
the concentration of sulfur in the fluid inside the pore, ppmw
the concentration of sulfur in the bulk solution, ppmw
initial concentration of sulfur in the bulk solution, ppmw
- C*
the sulfur concentration in the liquid phase at equilibrium with the adsorbed sulfur in the solid, ppmw
- DA
internal diffusion coefficient of sulfur inside the adsorbent pellet, m2 s−1
- K
mass transfer coefficient, m s−1
- L
height of the adsorbent pellet, m
- MA
molecular weight of adsorbate, kg kmol−1
- q
the sulfur sorbed per unit mass of adsorbent, mg g−1
- qm
constant parameter of Langmuir isotherm
- R
radius of the adsorbent pellet, m
- V
volume of the liquid phase, m3
- Greek symbols
- α
constant parameter of Langmuir isotherm
- εp
porosity of the pellet
- ρr
actual density of adsorbent, kg m−3
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©2014 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Prediction of Fischer–Tropsch Synthesis Kinetic Parameters Using Neural Networks
- Temperature Peak Analysis and Its Effect on Absorption Column for CO2 Capture Process at Different Operating Conditions
- Valorization of Glycerol into Polyhydroxyalkanoates by Sludge Isolated Bacillus sp. RER002: Experimental and Modeling Studies
- Parameter Estimation of Kinetic Model Equations for Chemical Leaching of Coal
- Few-Step Kinetic Model of Gaseous Autocatalytic Ethane Pyrolysis and Its Evaluation by Means of Uncertainty and Sensitivity Analysis
- A Mathematical Modeling and Experimental Study on Adsorptive Desulfurization of Model Gasoline Using Synthesized Ni–Y and Ce–Y Zeolites
- Inter-Communicative Decentralized Multi-Scale Control (ICD-MSC) Scheme: A New Approach to Overcome MIMO Process Interactions
- Technical Note
- Effect of Operating Parameters on Ethanol–Water Vacuum Separation in an Ethanol Dehydration Apparatus and Process Modeling with ANN
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Prediction of Fischer–Tropsch Synthesis Kinetic Parameters Using Neural Networks
- Temperature Peak Analysis and Its Effect on Absorption Column for CO2 Capture Process at Different Operating Conditions
- Valorization of Glycerol into Polyhydroxyalkanoates by Sludge Isolated Bacillus sp. RER002: Experimental and Modeling Studies
- Parameter Estimation of Kinetic Model Equations for Chemical Leaching of Coal
- Few-Step Kinetic Model of Gaseous Autocatalytic Ethane Pyrolysis and Its Evaluation by Means of Uncertainty and Sensitivity Analysis
- A Mathematical Modeling and Experimental Study on Adsorptive Desulfurization of Model Gasoline Using Synthesized Ni–Y and Ce–Y Zeolites
- Inter-Communicative Decentralized Multi-Scale Control (ICD-MSC) Scheme: A New Approach to Overcome MIMO Process Interactions
- Technical Note
- Effect of Operating Parameters on Ethanol–Water Vacuum Separation in an Ethanol Dehydration Apparatus and Process Modeling with ANN
