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  • آزمایشگاه تحقیقاتی نفت و گاز

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Application of Janus nanoparticles in enhanced oil recovery processes: Current status and future opportunities

Z Tohidi, A Teimouri, A Jafari, R Gharibshahi, MR Omidkhah
Journal Papers , , {Pages }

Abstract

Electromagnetic field’s effect on enhanced oil recovery using magnetic nanoparticles: Microfluidic experimental approach

M Hasani, A Jafari
Journal Papers , , {Pages }

Abstract

Three-dimensional CFD simulation of anaerobic reactions in a continuous packed-bed bioreactor

Sasan Zarei, Seyyed Mohammad Mousavi, Teimour Amani, Mehrdad Khamforoush, Arezou Jafari
Journal PapersRenewable Energy , Volume 169 , 2021 May 1, {Pages 461-472 }

Abstract

In this study, a lab-scale continuous packed-bed bioreactor with multi-sized distributed particles has been simulated in a structured layout using computational fluid dynamics. The goal was to achieve a well-estimated simple model which can describe the hydrodynamic regime of flow as well as mass transfer of species within the bioreactor. A MATLAB program was coded to create the packed-bed geometry by generating non-overlapping spherical particles. The flow hydrodynamics was assumed to be single-phase creeping flow regime (Stokes flow). The kinetic data of batch experiments at similar operating conditions were used to formulate the rate of anaerobic reactions. The anaerobic methanogenesis reactions were assumed to occur at the particle surf

Methods for Viscosity Reduction of Heavy Crude Oil with Focus on Nano Catalysts: A Review Study

SA SABET, MR OMIDKHAH, A JAFARI
Journal Papers , Volume 19 , Issue 112, 2021 January 1, {Pages 74-85 }

Abstract

Investigations on a variety of methods for reducing the viscosity of heavy crude oil show that conventional methods due to their high temperature and pressure are expensive, unsafe, costly maintenance with huge utility and low efficiency. Thermal cracking was the first method of reducing viscosity, which presence of catalysts could improve some of its problems such as instability and extremely high temperatures. But temperature was still high and due to these basic problems, efforts are continuing to achieve better result and more efficiency. Usage of dispersed nanocatalysts greatly increased the efficiency of these reactions so that at presence of hydrogen and nano dispersed catalyst viscosity reduced up to 99%. Many nanocatalysts have bee

Nanoparticles assisted microwave radiation: Fluid-rock interactions in oil reservoirs

HS Armandi, A Jafari, R Gharibshahi
Journal Papers , , {Pages }

Abstract

Effects of Phase Change on Enhanced Oil Recovery During Injection of Steam Carrying Alumina Nanoparticles: Numerical Simulation

M Ahmadlouydarab, K Ghaffari, A Jafari
Journal Papers , , {Pages }

Abstract

Evaluating the Effect of Demand Response Programs (DRPs) on Robust Optimal Sizing of Islanded Microgrids. Energies 2021, 14, 5750

M Karami Darabi, H Ganjeh Ganjehlou, A Jafari, M Nazari-Heris, ...
Journal Papers , , {Pages }

Abstract

Biosynthesis of silica nanoparticle using Saccharomyces cervisiae and its application on enhanced oil recovery

Hamed Zamani, Arezou Jafari, Seyyed Mohammad Mousavii, Esmaeel Darezereshki
Journal PapersJournal of Petroleum Science and Engineering , 2020 January 30, {Pages 107002 }

Abstract

Using nanotechnology to increase the recovery of oil reservoirs can be a good way to meet energy demand, in order to increase oil production and reduce production costs. Biotechnology of nanoparticles using microorganisms as an environmentally friendly research field in nanotechnology around the world is a rapid development and is considered as a substitute for conventional and physical chemical methods. Optimizing processes can lead to morphology, control of the size and speed of nanoparticle synthesis reactions. Therefore, the purpose of this research is to build a reflection on the current status and future projects, and in particular the feasibility and limitations of the biotechnology approach proposed in the oil industry. In this rese

A novel model for natural gas storage on carbon nanotubes

Sajad Askari, Arezou Jafari
Journal PapersApplied Nanoscience , 2020 January 2, {Pages 15-Jan }

Abstract

Compressed natural gas (CNG) is widely used in the automotive industry, but high pressure increases the costs of vessel design and construction, with this process being dangerous as well. To overcome problems associated with CNG, adsorbed natural gas (ANG) was introduced where adsorbents, such as activated carbon, play a fundamental role in this process. In this method, gas storage is low and non-economical, but it is safer. The present research was conducted to solve this problem using adsorbent nanoparticles, particularly nanotubes, and the modeling of natural gas storage in nanoparticles was studied. First, the governing equations of the process were obtained. Second, coding was done using MATLAB software, and the effects of various fact

Material properties and cell compatibility of poly (γ-glutamic acid)-keratin hydrogels

Maryam Ijadi Bajestani, Safaa Kader, Mehri Monavarian, Seyyed Mohammad Mousavi, Esmaiel Jabbari, Arezou Jafari
Journal PapersInternational Journal of Biological Macromolecules , Volume 142 , 2020 January 1, {Pages 790-802 }

Abstract

Given the great demand for biopolymer and protein-based products from renewable resources, synthesis of a keratin-based hydrogel is presented herein. In this work, a novel hydrogel of poly(γ-glutamic acid) (γ-PGA) and keratin was synthesized through facile EDC?HCl/HOBt chemistry. Since keratin main chain is rich in amino side groups, carboxyl groups in γ-PGA were crosslinked with multi terminated amine groups in keratin. In the following, the hydrogel characteristics, including swelling ratio (2010% at molar ratio of HOBt/EDC = 0.105), in vitro degradation and mass loss (about 20% at day 21 for the aforementioned sample), chemical decomposition and the rheological properties were investigated. The chemical activator agents, enhanced

Novel preparation of MoO3/gamma-Al2O3 nanocatalyst: application in extra-heavy oil visbreaking at atmospheric pressure

Nooshin Taghili, Mehrdad Manteghian, Arezou Jafari
Journal PapersAPPLIED NANOSCIENCE , Volume 10 , Issue 5, 2020 May 1, {Pages 1603-1613 }

Abstract

In this study, the effect of gamma alumina-based molybdenum oxide nanoparticles, on the viscosity reduction of extra-heavy crude oil in a catalytic cracking process in atmospheric pressure and at 250-350 degrees C investigated for the first time. Molybdenum oxide nanoparticles synthesized using the polyol method and heating by microwave radiation. According to the dynamic light scattering (DLS) analysis, obtained nanoparticles have an average size of 6 nm. These nanoparticles coated on gamma-alumina powder using the novel method of per-vaporation, and through this method, 0.011 g of molybdenum oxide nanoparticles coated over per 1 g of catalyst, during 14 days. The performance of the synthesized catalysts in the cracking process of extra-h

Phase Behavior, Wettability Alteration, and Oil Recovery of Low-Salinity Surfactant Solutions in Carbonate Reservoirs

Sepideh Veiskarami, Arezou Jafari, Aboozar Soleymanzadeh
Journal PapersSPE Journal , 2020 May 1, {Pages }

Abstract

Recent investigations have shown that treatment with injected brine composition can improve oil production. Various mechanisms have been suggested to go through the phenomenon; nevertheless, wettability alteration is one of the most commonly proposed mechanisms in the literature. Wettability alteration of the porous media toward a more favorable state reduces the capillary pressure, consequently contributing to the oil detachment from pore walls.

Novel preparation of MoO3/γ-Al2O3 nanocatalyst: application in extra-heavy oil visbreaking at atmospheric pressure

Nooshin Taghili, Mehrdad Manteghian, Arezou Jafari
Journal PapersApNan , Volume 10 , Issue 5, 2020 April , {Pages 1603-1613 }

Abstract

In this study, the effect of gamma alumina-based molybdenum oxide nanoparticles, on the viscosity reduction of extra-heavy crude oil in a catalytic cracking process in atmospheric pressure and at 250-350 C investigated for the first time. Molybdenum oxide nanoparticles synthesized using the polyol method and heating by microwave radiation. According to the dynamic light scattering (DLS) analysis, obtained nanoparticles have an average size of 6 nm. These nanoparticles coated on gamma-alumina powder using the novel method of per-vaporation, and through this method, 0.011 g of molybdenum oxide nanoparticles coated over per 1 g of catalyst, during 14 days. The performance of the synthesized catalysts in the cracking process of extra-heavy crud

Application of novel functionalized Al2O3/silica by organosiloxane and amine reagents for enhanced oil recovery

Sara Habibi, Arezou Jafari, Zahra Fakhroueian
Journal PapersAPPLIED NANOSCIENCE , 2020 April 2, {Pages }

Abstract

The presence of nanoparticles (NPs), as new and efficient materials in enhanced oil recovery (EOR), has been considerably investigated in recent decades. In addition, smart surface modification of NPs is one of the capabilities recently defined in nanotechnology and nanoscience. Therefore, the main aim of this research is the application of new silica nanoparticles containing Al2O3 activators in EOR. Organosiloxane and amines have been used for surface modification and homogenized dispersibility of NPs in water-based as amine/organosiloxane@Al2O3/SiO2 (AOAS) nanocomposites synthesized using co-precipitation-hydrothermal method. These nanocomposites were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectro

A Systems-Based Approach for Cyanide Overproduction by Bacillus megaterium for Gold Bioleaching Enhancement

Javad Aminian-Dehkordi, Seyyed Mohammad Mousavi, Sayed-Amir Marashi, Arezou Jafari, Ivan Mijakovic
Journal PapersFrontiers in Bioengineering and Biotechnology , Volume 8 , 2020 June 3, {Pages 528 }

Abstract

With the constant accumulation of electronic waste, extracting precious metals contained therein is becoming a major challenge for sustainable development. Bacillus megaterium is currently one of the microbes used for the production of cyanide, which is the main leaching agent for gold recovery. The present study aimed to propose a strategy for metabolic engineering of B. megaterium to overproduce cyanide, and thus ameliorate the bioleaching process. For this, we employed constraint-based modeling, running in silico simulations on iJA1121, the genome-scale metabolic model of B. megaterium DSM319. Flux balance analysis (FBA) was initially used to identify amino acids to be added to the culture medium. Considering cyanide as the desired produ

Effect of antimicrobial activity of Teucrium polium on oral Streptococcus mutans: a randomized cross-over clinical trial study

A Jafari, SK Tusi, SMA Marashi, SF Niknam, M Farid, M Ansari
Journal Papers , 2020 April 14, {Pages }

Abstract

Background: The purpose of this study was to determine the effect of a mouthwash containing Teucrium polium herb on Streptococcus mutans in mouth. Methods: This study was a randomized, crossover, double-blind clinical trial, where twenty-two volunteer dental students were randomly divided into two groups. The study had two phases. In each phase, one group was chosen as the intervention group, while the other one was the control group. Both the intervention and control groups were given the mouthwash with and without Teucrium polium, respectively. S. mutans of saliva were measured before and after each phase to compare the effects of the mouthwashes. A three-week washout period was considered between the two phases. An independent two-sample

Landscape Planning for Conservation, Based on the InVEST Model of Habitat Quality and Ecological Impact Assessment of Road Network in Chaharmahal & Bakhtiari Province

Sh Nematollahi, S Fakheran, A Jafari, T Raeisi, S Pourmanafi
Journal PapersIranian Journal of Applied Ecology , Volume 8 , Issue 4, 2020 January 10, {Pages 67-81 }

Abstract

One of the primary goals of conservation portfolio selection approaches is to create a functional landscape or network of sites that can support all elements of biodiversity and minimize the environmental risk to critical habitats and species. As human activities, especially roads network development, can be regarded as one of the most important risk elements for the valuable habitats and species of the Chaharmahal & Bakhtiari Province, it is necessary to evaluate the habitat’s condition and ecosystem services for the purpose of conservation planning, as well as minimizing the negative impacts of the roads network on the ecosystem services and habitats. So, for this purpose, first, the habitat quality of Capra aegagrus was modeled using t

Novel preparation of MoO 3/γ-Al 2 O 3 nanocatalyst: application in extra-heavy oil visbreaking at atmospheric pressure

Nooshin Taghili, Mehrdad Manteghian, Arezou Jafari
Journal PapersApplied Nanoscience , Volume 10 , Issue 5, 2020 May , {Pages 1603-1613 }

Abstract

In this study, the effect of gamma alumina-based molybdenum oxide nanoparticles, on the viscosity reduction of extra-heavy crude oil in a catalytic cracking process in atmospheric pressure and at 250–350 C investigated for the first time. Molybdenum oxide nanoparticles synthesized using the polyol method and heating by microwave radiation. According to the dynamic light scattering (DLS) analysis, obtained nanoparticles have an average size of 6 nm. These nanoparticles coated on gamma-alumina powder using the novel method of per-vaporation, and through this method, 0.011 g of molybdenum oxide nanoparticles coated over per 1 g of catalyst, during 14 days. The performance of the synthesized catalysts in the cracking process of extra-heavy cr

Hybridization of superparamagnetic Fe3O4 nanoparticles with MWCNTs and effect of surface modification on electromagnetic heating process efficiency: A microfluidics enhanced?…

Reza Gharibshahi, Mohammadreza Omidkhah, Arezou Jafari, Zahra Fakhroueian
Journal PapersFuel , Volume 282 , 2020 December 15, {Pages 118603 }

Abstract

This study investigated the effect of different surface modifications on the microwave absorption performance of new synthesized MWCNT-Fe3O4 nanohybrid. MWCNT-Fe3O4 nanohybrids were synthesized via a co-precipitation method. For the dispersion of these nanomaterials into the water (as the injected fluid), the surfaces of them were modified. For this purpose, three different materials included 3-AminoPropylTriEthoxySilane (APTES), citric acid (CA), and polyethylene glycol (PEG 6000) were used as the surface modification agents. The nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray crystallography (XRD), vibrating sample magnetometer (VSM), and field emission scanning electron microscopy (FESEM). Stabil

Application of novel functionalized Al 2 O 3/silica by organosiloxane and amine reagents for enhanced oil recovery

Sara Habibi, Arezou Jafari, Zahra Fakhroueian
Journal PapersApplied Nanoscience , Volume 10 , Issue 7, 2020 July , {Pages 2085-2100 }

Abstract

The presence of nanoparticles (NPs), as new and efficient materials in enhanced oil recovery (EOR), has been considerably investigated in recent decades. In addition, smart surface modification of NPs is one of the capabilities recently defined in nanotechnology and nanoscience. Therefore, the main aim of this research is the application of new silica nanoparticles containing Al 2 O 3 activators in EOR. Organosiloxane and amines have been used for surface modification and homogenized dispersibility of NPs in water-based as amine/organosiloxane@ Al 2 O 3/SiO 2 (AOAS) nanocomposites synthesized using co-precipitation–hydrothermal method. These nanocomposites were characterized by scanning electron microscopy (SEM), Fourier transform infrare

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