• Deep Extractive Oxidative Desulfurization of Model Oil/Crude Oil using Different Keggin Heteropoly Acids Supported on K10 Montmorillonite 

  Sahraei, Sadegh؛ Rafiee, Ezzat؛ Moradi, Gholamraza (University of Tehran, 2023-06-01)

  This study investigated the catalytic performance of three polyoxometalates (H3PMo12O40 (PMo), H3PW12O40 (PW) and H4SiW12O40 (SiW)) supported on montmorillonite K10 for deep oxidative desulfurization (ODS) of mixed thiophenic ...

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• Liner Pressure Test Buckling Generation and Influences on Running String and Cement Quality of Previous Casing in Vertical Wells 

  Leksir, Abdeslem (University of Tehran, 2023-06-01)

  Buckling occurrence during liner pressure test represents a challenge, in addition to running string deformation; previous casing cement quality may be severely affected. Practically, running string placed straightly on ...

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• Comparison and Optimization of Pyrolysis Bio-Oil Composition from Sewage Sludge and Spirulina Microalgae 

  Hemmatkhah, Reza؛ Majidian, Nasrolla؛ Hallajisani, Ahmad؛ Samipoor giri, Mohammad (University of Tehran, 2023-06-01)

  The abundant presence of spirulina microalgae and sewage sludge led to the researchers pay attention to recycling and economical conversion into valuable materials. This study investigated the simultaneous pyrolysis ...

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• Insights into the Impacts of Synthesis Parameters on Lignin-based Activated Carbon and Its Application for: Methylene Blue Adsorption 

  Ghane, Sara؛ Moosavi, Elham؛ Karimzadeh, Ramin (University of Tehran, 2023-06-01)

  In the current research, lignin was successfully extracted from industrial waste Kraft black liquor using acid precipitation method. In the following step, powdered carbon was sensitized through H3PO4-chemical activation ...

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• The Influence of Polymer Type and Concentration on the Metoprolol Mass Transfer in Extended-Release Tablet of Metoprolol Succinate 

  Khadivparsi, Parissa؛ Rafiee-Tehrani, Morteza؛ Dorkoosh, Farid؛ Babaee Darabad, Jabber؛ Azizpour, Hedayat؛ Rezamandi, Nariman؛ Larki, Nadia (University of Tehran, 2023-06-01)

  Metoprolol has been widely used for controlling high blood pressure, preventing myocardial reinfarction, setting rate changes, setting heart rhythm, treatment of chronic angina and preventing excessive bleeding during ...

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• Experimental study of fluid flow in horizontal and deviated wells during the artificial gas lift process 

  Yazdani, Bardiya؛ Alinejad, Salva؛ Ghasemi, Ehsan؛ Taghikhani, Vahid (University of Tehran, 2023-06-01)

  Introduction: One of the main objectives of reservoir engineering studies is to increase the production of hydrocarbon reservoirs with an optimal method. One of the artificial lift methods in wells is the gas lift. This ...

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• Experimental and Numerical Studies on Improving Cyclone Efficiency by Rotation of Cyclone Body 

  Salehyar, Saman؛ Ghaemi, Ahad؛ Mashhadimoslem, Hossein؛ Shirvani, Mansour (University of Tehran, 2023-06-01)

  In this study, the separation of silica particles was investigated experimentally and numerically using a cyclone separator. Computational Fluid Dynamics (CFD) simulation was performed using a multi-phase Eulerian-Eulerian ...

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• Performance Evaluation of the New Environmentally Friendly Additive for Enhanced Fluid Loss and Rheological Properties of Drilling Fluid 

  Awl, Mohammed؛ Mahmood, Barham؛ Mohammed, Pshtiwan؛ Mohammed, Hardi؛ Hamad, Ali؛ Abdulqadir, Ahmad؛ Abdalqadir, Mardin (University of Tehran, 2023-06-01)

  Environmental protection during drilling is necessary for onshore oil and gas development. With the available additives, it is impossible to design a drilling fluid system that is both efficient and environmentally friendly. ...

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• Optimal Condition of DME Production Through Syngas Hydrogenation in Dual Membrane Reactor 

  Farsi, Mohammad؛ Hallajisani, Ahmad (University of Tehran, 2023-06-01)

  Typically, supporting the DME synthesis reactor by hydrogen and H2O permselective membrane modules and optimization of operating condition are practical solutions to shift the equilibrium conversion of reactions toward DME ...

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• Testing of Glycerol Ketals as Components of B20, B50 Fuel Blends 

  Mamedov, Ibrahim؛ Azimova, Nargiz؛ Javadova, Ofeliya (University of Tehran, 2023-06-01)

  The aim of the present work was to the synthesis of glycerol ketals by using p-toluenesulfonic acid (PTSA), their applications in biodiesel blends. Biodiesel was prepared from the sunflower oil by the transesterification ...

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• A Precise Mathematical Correlation to Estimate Product Yield of Delayed Coking Units 

  Ahmadlouydarab, Majid؛ Hosseini, Seyed Sharif؛ Muhammad Ali, Hafiz؛ Asadzadeh, Naser (University of Tehran, 2023-06-01)

  Typical models are employed to estimate the product yields of delayed coking units using complicated and multistep calculations. In current study, a new first-order mathematical model have been proposed to estimate delayed ...

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• Performance of Surfactant-Type Polyoxometalate, [(C16H33)N(CH3)3]6 [PV3W9O40] in Oxidative Desulfurization of Gas Condensate and Straight Run Gasoil 

  Karimi, Kamel؛ Moradi, Gholamreza (University of Tehran, 2023-06-01)

  A novel hybrid surfactant-type polyoxometalate, [(C16H33)N(CH3)3]6 [PV3W9O40] was synthesized and characterized by FT-IR, SEM and EDX analyze. Oxidation of sulfur compounds in gas condensate with H2O2 as oxidant using ...

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• Experimental Investigation of the Influence and Comparison of Microwave and Ultrasonic Waves on Carbonate Rock Wettability 

  Yazdani, Bardiya؛ Saeedi Dehaghani, Amir Hossein (University of Tehran, 2022-12-01)

  In this research, the influence and comparison of ultrasonic and microwaves on the wettability of carbonate rock have been investigated. Wettability is one of the most fundamental parameters of the oil reservoir, according ...

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• Study and Optimization of the Effect of Temperature, Acid Concentration, and Rock Grain Size on the pH of Carbonate Reservoir Acidizing 

  Ahmadi, Amin؛ Paydar, Kaveh؛ Ebadi, Ali؛ Manteghian, Mehrdad (University of Tehran, 2022-12-01)

  After the carbonate reservoir acidizing and the damaged wellbore stimulating, the pH of the environment has particular importance in reducing corrosion during production. In this study, the pH change after the calcium ...

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• Modeling of Diffusion Coefficients for Binary Gas at P=101.325 kPa using Particle Swarm Optimization Algorithm 

  Oudi, Amirhossein؛ Hosseini, Maryam؛ Azimi, Sara؛ Davoodbeygi, Yegane (University of Tehran, 2022-12-01)

  The diffusion coefficient of gases in a wide range of chemical processes is of great importance. Semi-empirical models for diffusion coefficient prediction are useful due to their relatively lower cost compared to laboratory ...

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• Mathematical Modeling of Thermally Coupled Cyclohexane Dehydrogenation and Nitrobenzene Hydrogenation Reactors 

  Ghani, Roozbeh؛ Habibi, Ali؛ Yazdanbakhsh, Amirhosein (University of Tehran, 2022-12-01)

  This work aims to develop a one-dimensional mathematical model for a novel multi - tubular thermally coupled reactor in the steady-state condition. The mentioned thermally coupled reactor includes the endothermic reaction ...

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• The Comprehensive Evaluation of the Coke Formation and Catalyst Deactivation in the Propane Dehydrogenation Reactor: Computational Fluid Dynamics Modelling 

  Mosleh, Soleiman؛ Darvishi, Parviz (University of Tehran, 2022-12-01)

  A numerical evaluation was performed to understand the effect of catalytic bed geometry on the catalyst deactivation and propane dehydrogenation reactor performance with respect to coke formation. Furthermore, the temperature ...

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• Vulnerability of Renewable and Fossil Fuel Energy from COVID 19 

  Ahmadyan, Azam (University of Tehran, 2022-12-01)

  COVID-19 has hurt the world economy since its global spread. So various economic sectors, particularly the energy sector, have been impacted negatively. Statistical analysis has been used in numerous research to assess the ...

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• Numerical Modeling of Micromixing Performance of Five Generic Microchannel Reactors using Villermaux/Dushman Competing Test Reaction 

  Valeh-e-Sheyda, Peyvand؛ Yarmohammad, Majid (University of Tehran, 2022-12-01)

  Microchannel reactors, known as high-process intensification reactors, are utilized in various fields due to their intensive micromixing performance, which is crucial for fast chemical reactions. The work presented here ...

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• The Effect of Carbonate Cement Type on Sandstone Matrix Acidizing 

  Younesian-Farid, Hossein؛ Sadeghnejad, Saeid (University of Tehran, 2022-12-01)

  This study aims to numerically determine the roles of the geochemical reactions during the injection of a strong acid into a sandstone sample. As a case study, we used laboratory results of hydrochloric acid (HCl) injection ...

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