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

Fahimeh Mirzaei; Ahad Ghaemi

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

http://dx.doi.org/10.22050/ijogst.2020.222615.1540

Abstract
  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
2. Nitrogen Adsorption on Molecular Sieve Zeolites: An Experimental and Modeling Study

Erfan Tooraji; Ahad Ghaemi

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

http://dx.doi.org/10.22050/ijogst.2019.186102.1506

Abstract
  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
3. 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 , Autumn 2019, , Pages 85-105

http://dx.doi.org/10.22050/ijogst.2018.143946.1472

Abstract
  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
4. 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 , Summer 2017, , Pages 55-67

http://dx.doi.org/10.22050/ijogst.2017.57858

Abstract
  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

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

Amir Hosein Tahershamsi; Ahad Ghaemi; Mansour Shirvani

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

http://dx.doi.org/10.22050/ijogst.2016.41600

Abstract
  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