Volume 19 (2022)
Volume 18 (2021)
Volume 17 (2020)
Volume 16 (2019)
Volume 15 (2018)
Volume 14 (2017)
Volume 13 (2016)
Volume 12 (2015)
Volume 11 (2014)
Volume 10 (2013)
Volume 9 (2012)
Volume 8 (2011)
Volume 7 (2010)
Volume 6 (2009)
Volume 5 (2008)
Volume 4 (2007)
Volume 3 (2006)
Volume 2 (2005)
Volume 1 (2004)
Modeling and Simulation
Screening of important factors affecting the process of ammonia synthesis by Plackett-Burman method and process optimization with RSM

Amirhossein Oudi; Abdullah Irankhah

Volume 19, Issue 2 , June 2022


  Optimization of the ammonia synthesis unit to increase ammonia production is studied in this line of research. In this paper, the steady-state ammonia synthesis is simulated using Aspen HysysV.11 software, by comparing the simulation results with industrial information, a mean relative error of 7.71% ...  Read More

Conceptual Design of a Batch Process for Biodiesel Production from High Free Fatty Acid Feedstocks

Abbas Mohammadi; Barat Ghobadian

Volume 19, Issue 1 , March 2022


  A batch process was developed for biodiesel production from high free fatty acid feedstocks. The mixed-integer nonlinear programming (MINLP) problem caused due to applying of hierarchical procedure together with Malone’s algorithm for conceptual design was solved. Meanwhile, the optimum states ...  Read More

Modeling and Simulation
Mathematical Modeling and Parameters Optimization of the Degradation of Acrylonitrile in Biofilters

Hajar seyfi; Sirous shafiei; Reza Dehghanzadeh; Parya Amirabedi

Volume 18, Issue 3 , September 2021, , Pages 3-15


  The removal of Acrylonitrile (AN) from waste gas streams using biological methods, due to their better performance, has recently gained more attraction. The purpose of this research is modeling the AN removal by a bio-filter. The validation of the model is done by using the experimental data of a bench-scale ...  Read More

Production of Bio-Gasoline with High Octane Number, as a Renewable Transportation Biofuel, via Thermochemical Conversion of Castor Oil

R. Parvizsedghy; M. Alibolandi; S. M. Sadrameli

Volume 17, Issue 3 , September 2020, , Pages 3-23


  Vegetable oils are proved as valuable feedstocks in the biofuel production. Some common issues of cracking of vegetable oils–as an effective method for the biofuel production- are related to the glycerol decomposition during the cracking process. Transesterification, which can remove glycerol from ...  Read More

Nelder-Mead algorithm optimization and Galerkin’s method thermal performance analysis of circular porous fins with various profiles in fully wet conditions

M. r. Talaghat; F. Shafiei

Volume 16, Issue 3 , September 2019, , Pages 37-57

  The main objective of this research is to analyze optimization and the thermal performance of circular porous fins with four different profiles, rectangular, convex, triangular and concave under fully wet conditions. In this research, a linear model was used for the relationship between humidity and ...  Read More

Modeling and Simulation
Application of artificial neural network in deoxygenation of water by glucoseoxidase immobilized in calcium alginate/MnO2 composite

A. Abdi; M.Sh Izadkhah; A. Karimi; M. Razzaghi; H. Moradkhani

Volume 15, Issue 3 , September 2018, , Pages 82-93

  A three-layer artificial neural network (ANN) model was developed to predict the remained DO (deoxygenation) in water after DO removal with an enzymatic granular biocatalyst (GB), based on the experimental data obtained in a laboratory stirring batch study. The effects of operational parameters such ...  Read More

Reaction Engineering, Kinetics and Catalysts,
Optimization of Semiregenerative Catalytic Naphtha Reforming Unit to Enhance Octane Number and Reformate Yield

I. Khosrozadeh; M.R. Talaghat; A.A. Roosta

Volume 15, Issue 2 , May 2018, , Pages 52-64

  Catalytic naphtha reforming is one of the most important processes in which, low quality naphtha is converted into high octane motor gasoline. In this study, a mathematical model was developed and was used for investigation the effect of temperature, pressure, hydrogen to hydrocarbon ratio on the octane ...  Read More

Separation Technology,
Waste water ammonia stripping intensification using microfluidic system

Mo. H. Almasvandi; M. Rahimi

Volume 14, Issue 4 , December 2017, , Pages 17-31

  This paper reports the results of experimentally removing ammonia from synthetically prepared ammonia solution using a micro scale mixing loop air stripper. Effects of various operational parameters (such as: pH, air flow rate, wastewater flow rate and initial ammonia concentration) were evaluated. By ...  Read More

Biomedical and Biotechnology,
Transdermal Delivery of Desmopressin Acetate from Water-in- Oil Nano/submicron Emulsion Systems

Arezou Soroushnia; Fariba Ganji; Seyed Mojtaba Taghizadeh

Volume 13, Issue 4 , November 2016, , Pages 1-13

  Desmopressin acetate is a potent synthetic peptide hormone. A more acceptable route of Desmopressin acetate is a potent synthetic peptide hormone. That is administered via parenteral, intranasal, and oral routes. A more acceptable route of administration with potentially good bioavailability could be ...  Read More

Modeling and Simulation
Optimization of Hydrogen Distribution Network by Imperialist Competitive AlgorithmIn

M Omidifar; S Shafiei; H Soltani

Volume 13, Issue 3 , July 2016, , Pages 63-77

  In modern refineries, hydrogen is widely used for the production of clean fuels. In this paper, a new method is presented in order to use hydrogen more effectively in refineries. This new method is based on combination of linear programming with imperialist competitive algorithm (ICA) in order to optimize ...  Read More

Petroleum and Reservoir Engineering
An optimization study by response surface methodology (RSM) on viscosity reduction of residue fuel oil exposed ultrasonic waves and solvent injection

A. Mohammadi Doust; M. Rahimi; M. Feyzi

Volume 13, Issue 1 , January 2016, , Pages 3-19

  In this study, response surface methodology (RSM) based on central composite design (CCD) was applied for investigation of the effects of ultrasonic waves, temperature and solvent concentration on viscosity reduction of residue fuel oil (RFO). Ultrasonic irradiation was employed at low frequency of 24 ...  Read More

Process Control and Engineering, Process Safety, HSE
Optimization of Integrated Low-Temperature Gas Separation Processes Using SA Method and Different Refrigerants
Volume 6, Issue 4 , October 2009, , Pages 27-33

  In low-temperature processes, heat rejected from separation columns is removed by refrigeration systems to heat sinks (reboilers & pre-heaters), process streams, other refrigeration streams, or external utilities. The need for efficient utilization and recovery of energy in sub-ambient gas separation ...  Read More

Modeling and Simulation
Multi-objective Genetic Optimization of Ethane Thermal Cracking Reactor
Volume 5, Issue 3 , July 2008, , Pages 29-39

  An industrial ethane thermal cracking reactor was modeled assuming a molecular mechanism for the reaction kinetics coupled with material, energy, and momentum balances of the reactant-product flow along the reactor. To carry out the multi-objective optimization for two objectives such as conversion and ...  Read More

Transport Phenomena,
An Efficient Coupled Genetic Algorithm-NLP Method for Heat Exchanger Network Synthesis
Volume 5, Issue 1 , January 2008, , Pages 22-33

  Synthesis of heat exchanger networks (HENs) is inherently a mixed integer and nonlinear programming (MINLP) problem. Solving such problems leads to difficulties in the optimization of continuous and binary variables. This paper presents a new efficient and robust method in which structural parameters ...  Read More

Modeling and Simulation
Investigation of CO2 and H2O Addition to Natural Gas for Production of Synthesis Gas
Volume 2, Issue 1 , January 2005, , Pages 31-54

  General modeling and optimization of syngas production via noncatalytic autothermal partial oxidation of methane are carried out using our developed scientific software which was based on the minimization of total Gibbs energy. In this work, a novel application of the direct search and Newton-Raphson ...  Read More