Papers by mohammad Al-Mayyahi
Journal of petroleum exploration and production technology, Feb 10, 2024
The current study is designed and performed to examine the impact of a combinative method includi... more The current study is designed and performed to examine the impact of a combinative method including the new class of surfactants from the ionic liquids (ILs) family (imidazolium type) and nanoparticles (NPs) namely silicon dioxide nanoparticles (SiO 2-NPs). Besides, the effect of pH concomitant with the other parameters was examined since pH is an essential operating parameter especially if researchers dealing with a non-neutral type of crude oil. Unfortunately, although using chemicals is highly effective, there are limited investigations dealing with a new class of surfactants, NPs, and operating conditions such as pH. In other words, although there are several investigations dealing with alkaline, polymers, and surfactants, a few studies were performed to find the interactions between the new class of surfactants such as ILs, NPs (no matter metallic-based or nonmetallic-based type) and pH which can directly manipulate the in-situ surfactant formation which acts similarly to alkaline injection. In this way, two different surfactants namely 1-dodecyl-3-methyl imidazolium chloride ([C 12 mim][Cl]), and 1-octadecyl-3-methyl imidazolium chloride ([C 18 mim][Cl]) and SiO 2-NPs with concentrations of 0-2000 ppm and 0-1000 ppm are used for interfacial tension (IFT) and wettability alteration investigations using heavy acidic crude oil. The measured IFT values revealed that increasing the surfactant concentration to 2000 ppm can reduce the IFT to the minimum value of 0.94 and 0.88 mN/m for [C 12 mim][C] and [C 18 mim][Cl], respectively. Besides, the measurements revealed that it is possible to reach the water-wet condition with contact angles of 81.3° and 74.5° for [C 12 mim][Cl] and [C 18 mim][Cl], respectively. Moreover, the measurements revealed that increasing the pH from 3 to 11 has a considerable effect on the IFT reduction and wettability alteration because of in-situ surfactant formation (reaction between the OH − and the functional group of the crude oil) which can act as a solution including alkaline in it. Finally, the IFT and contact angle were measured using 1000 and 500 ppm of [C 12 mim][Cl] and [C 18 mim][Cl] while the pH and SiO 2-NPs concentrations ranged between 3-11 and 0-1000 ppm, respectively. The measurements revealed the significant impact of SiO 2-NPs for reducing the IFT and changing the wetness of the rock surface with a minimum IFT value of 0.35 mN/m and contact angle of 23.3° (strongly water-wet condition). Considering the obtained results, it can be concluded that the proposed combinative method is highly applicable for higher oil production using the lab-scale equipment. The point is that the further systematic investigations are required since using combinative methods for enhanced oil recovery (EOR) purposes are still in the preliminary stages of their appearance.
Journal of physics, Feb 1, 2021
Superparamagnetic iron oxide nanoparticles (MNPs) with appropriate surface chemistry exhibit many... more Superparamagnetic iron oxide nanoparticles (MNPs) with appropriate surface chemistry exhibit many interesting properties that can be exploited in a variety of biomedical applications such as magnetic resonance imaging contrast enhancement, tissue repair, hyperthermia, drug delivery and in cell separation. These applications required that the MNPs such as iron oxide Fe 3 O 4 magnetic nanoparticles (Fe 3 O 4 MNPs) having high magnetization values and particle size smaller than 100 nm. This paper reports the experimental detail for preparation of monodisperse oleic acid (OA)-coated Fe 3 O 4 MNPs by chemical co-precipitation method to determine the optimum pH, initial temperature and stirring speed in order to obtain the MNPs with small particle size and size distribution that is needed for biomedical applications. The obtained nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM),
Studying the extraction of scandium(III) by macrocyclic compounds from aqueous solution using optimization technique
International Journal of Environmental Science and Technology, 2022
This study aims to optimize the extraction efficiency of Sc(III) by dicyclohexano-18-crown-6 (DC1... more This study aims to optimize the extraction efficiency of Sc(III) by dicyclohexano-18-crown-6 (DC18C6) and kryptofix 2.2.2 (K 2.2.2) macrocyclic compounds as novel extractants using response surface methodology (RSM). Additionally, it was intended to design a method for recovering Sc from an aqueous model solution using molecular recognition technology (MRT).The independent operating variables (concentration of K 2.2.2 and DC18C6, concentration of Sc, pH and time) influencing the extraction process were optimized by central composite rotatable design (CCRD) found in RSM of the STATISTZICA software. Moreover, the WinQSB software was employed to predict the optimum conditions. The complexation reaction between Sc and macrocyclic ligands was confirmed by ultraviolet visible spectroscopic (UV–Vis) and inductively coupled plasma optical emission spectroscopic (ICP-OES) techniques. Furthermore, the analysis of variance (ANOVA) component indicated that all the process independent variables investigated had significant impacts on the extraction efficiency of Sc. The obtained optimization results showed that at the following optimum conditions: 0.006 mol/L concentration of K 2.2.2 and DC18C6, 11 min contact time, pH 4 of the aqueous solution and 75 mg/L initial Sc concentration resulted in an optimum extraction efficiency of 99.7% and 15.2%, respectively. Moreover, the complexed metal ions can be efficiently recovered/stripped out by HCl or HNO3.
Performance Evaluation of a Wet Cooling Water Tower Using Graphene Nanofluids
JP Journal of Heat and Mass Transfer, 2018
Chemical Engineering Transactions, 2019
Energy saving is an important issue in process industries due to the increasing cost of energy an... more Energy saving is an important issue in process industries due to the increasing cost of energy and associated environmental pollution. Retrofitting of existing Heat Exchanger Networks (HENs) is a key solution to maintain their energy efficiency and minimize utilities consumption. Several graphical methods have been developed for retrofitting design of HENs during the last few years. However, some of these methods are tedious and often leads to complex and uneconomic retrofit. This paper presents a simple graphical retrofit method to cut utility consumption of existing HENs. The new retrofitting method uses a single graph called Supply-Target Diagram (ST-D) to identify and represent potential modifications in existing HENs. A case study is used to illustrate the application of the new graphical method for a retrofitting design of an existing HEN. The addition of two exchangers using the new graphical method shows that heating and cooling utilities can be reduced by 18.75% and 40% res...
Synthesis and surface modification of magnetic Fe3O4@SiO2 core-shell nanoparticles and its application in uptake of scandium (III) ions from aqueous media
Environmental Science and Pollution Research
The main objective of this work is to produce an eco-friendly and economically nano-adsorbent whi... more The main objective of this work is to produce an eco-friendly and economically nano-adsorbent which can separate scandium metal ions Sc from a model aqueous phase prior to applying these adsorbents in industrial filed. The magnetic core-shell structure Fe3O4@SiO2 nanoparticles were synthesized by modified Stöber method and functionalized with (3-aminopropyl) triethoxysilane APTES as a coupling agent and ethylenediaminetetraacetic acid (EDTA) as a ligand. Magnetic nano support adsorbents exhibit many attractive opportunities due to their easy removal and possibility of reusing. The ligand grafting was chemically robust and does not appreciably influence the morphology or the structure of the substrate. To evaluate the potential, the prepared hybrid nanoparticles were used as nano-adsorbent for Sc ions from model aqueous solutions due to the fact that rare earth elements (REEs) have a strong affinity for oxygen and nitrogen donors. The iron oxide nanoparticles were prepared by co-precipitation method at pH 10 and pH 11 to get the best morphology and nanoscale dimensions of iron oxide magnetic nanoparticles. The particle size, morphology, specific surface area, and surface modification were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), and X-ray powder diffraction (XRD). The results showed that the Fe3O4 nanoparticles with average particle size of 15 ± 3 nm were successfully synthesized at pH 11, and 25 °C. Moreover, the prepared Fe3O4 nanoparticles were coated with amorphous SiO2 and functionalized with amino and carboxyl groups. The adsorption study conditions of Sc are as follows: the initial concentrations of the Sc model solution varied 10–50 mg/L, 20 mL volume, 20–80 mg of the Fe3O4@SiO2-COO adsorbent, pH range of 1–5, and 5 h contact time at 25 °C temperature. The adsorption equilibrium was represented with Langmuir, Freundlich, and Temkin isotherm models. Langmuir model was found to have the correlation coefficient value in good agreement with experimental results. However, the adsorption process followed pseudo-second-order kinetics.
Improvement of mechanical properties of Oil well cement by incorporate Nano-CaCO3 prepared from eggshell waste
IOP Conference Series: Materials Science and Engineering
Heat transfer analysis of a shell and tube heat exchanger operated with graphene nanofluids
Case Studies in Thermal Engineering
Abstract Nanofluids have attracted huge attention because of their effective physical and thermal... more Abstract Nanofluids have attracted huge attention because of their effective physical and thermal properties. One of many applications of nanofluids is the enhancement of the thermal performance of heat exchangers. In the current study, an experimental investigation has been conducted for studying the effects of graphene nanofluids on the convective heat transfer in a vertical shell and tube heat exchanger. Graphene flakes were prepared using graphite foam that is derived from sugar as a raw material. The prepared Graphene flakes have been characterized using scanning electron microscopy, X-ray diffraction, atomic force microscopy, and Raman spectroscopy. The graphene nanofluid has been used in the tube side of the heat exchanger to enhance its heat transfer performance. Different parameters such as nanofluids’ concentration, flow rate and inlet temperature were studied and their effects on heat transfer coefficient and thermal efficiencies are discussed. The results show that using of graphene/water nanofluids enhances the thermal performance of the vertical shell and tube heat exchanger. A maximum increase in the heat transfer coefficient of 29% was achieved using 0.2% graphene/water nanofluids. Furthermore, the mean thermal efficiency of the heat exchanger was enhanced by 13.7% by using graphene/water nanofluid.
Journal of Physics: Conference Series
The high global population rate has driven the demand for fresh water to increase rapidly. Howeve... more The high global population rate has driven the demand for fresh water to increase rapidly. However, the scarcity of fresh water is creating an escalating pressure on the global community to find other alternative water resources such as wastewater reuse and desalination. Desalination is an effective technique for providing fresh water supply. However, most of current desalination technologies consume large amount of energy. Hence, the cost of fresh water produced is strongly depends on the cost of energy used in the desalination processes. For this purpose, a new water desalination system has been developed through theintegration of a thermal pump system, wetting technology and dehumidification. Power consumption in water desalination has been reduced by controlling water and air flow rates in the new system. The results showed that 1.71 kg /h of fresh water could be produced using only 0.726 kWh which is an important achievement in reducing the energy consumed in the water desalination in small capacity units.
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Papers by mohammad Al-Mayyahi