Petroleum Engineering
Mass Transfer Modeling of CO2 Absorption into Blended Aqueous MDEA–PZ Solution

Fahimeh Mirzaei; Ahad Ghaemi

Volume 9, Issue 3 , July 2020, , Pages 77-101

  In this research, the rate of CO2 absorption into methyl diethanolamine–piperazine (MDEA–PZ) solution was investigated. To model the mass transfer flux in the reactive absorption processes, the dimensionless parameters of the process were obtained using the Buckingham Pi theorem and considering ...  Read More

Chemical Engineering
Nitrogen Adsorption on Molecular Sieve Zeolites: An Experimental and Modeling Study

Erfan Tooraji; Ahad Ghaemi

Volume 9, Issue 1 , January 2020, , Pages 47-67

  Separation of nitrogen from a gaseous mixture is required for many industrial processes. In this study, the adsorption of nitrogen on zeolite 4A was investigated in terms of different adsorption isotherm models and kinetics. An increase in the initial pressure from 1 to 9 bar increases the amount of ...  Read More

Chemical Engineering
Prediction of Dispersed Phase Holdup in the Kühni Extraction Column Using a New Experimental Correlation and Artificial Neural Network

Mohsen Keshavarz; Ahad Ghaemi; Mansour Shirvani; Ebrahim Arab

Volume 8, Issue 4 , October 2019, , Pages 85-105

  In this work, the dispersed phase holdup in a Kühni extraction column is predicted using intelligent methods and a new empirical correlation. Intelligent techniques, including multilayer perceptron and radial basis functions network are used in the prediction of the dispersed phase holdup. To design ...  Read More

Chemical Engineering
An Experimental Investigation of Reactive Absorption of Carbon Dioxide into an Aqueous NH3/H2O/NaOH Solution

Ahad Ghaemi; Vahid Hashemzadeh; Shahrokh Shahhosseini

Volume 6, Issue 3 , July 2017, , Pages 55-67

  In this research, the reactive absorption of carbon dioxide in an aqueous solution of NH3, H2O, and NaOH has experimentally been investigated. The experiments were carried out in an absorption pilot plant in different operational conditions. The composition and temperature of both gas and liquid phases ...  Read More

Modeling and Simulation of Kuhni Extraction Column Using a Rate-based Model

Amir Hosein Tahershamsi; Ahad Ghaemi; Mansour Shirvani

Volume 5, Issue 4 , October 2016, , Pages 53-67

  In this study, liquid-liquid extraction process in a Kuhni extraction column was modeled and simulated. A non-equilibrium dynamic model was developed for modeling liquid-liquid extraction processes based on a rate-based model. The model equations are inclusive of partial and ordinary differential equations ...  Read More