Raheek I. Ibrahim

University of Technology, Iraq · Department of Electro-Mechanical Engineering

In the presented study, the major objective is reducing the viscosity and enhancing the flow related to heavy crude oil via pipelines using dual treatment as electrical field and dilution. The investigation of experimental variables' interaction effects on the objective function using optimization technique has been achieved. In this experiment, at...

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 technol...

The key idea is to reduce the Iraqi crude oil viscosity, and enhance its rheological properties during its pipeline transportation at low temperatures. To achieve this objective, four different graphene supercapacitor designs are tested, by the application of various electric field intensities as: 14 V cm⁻¹, 18 V cm⁻¹, and 22 V cm⁻¹, and the additi...

The importance of Super-capacitors (SCs) stems from their distinctive properties including long cycle life, high strength and environment friendly, they are sharing similar fundamental equations as the traditional capacitors; for attaining high capacitances SC using electrodes materials with thinner dielectrics and high specific surface area. In th...

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-am...

The nanoparticles of the magnetic core-shell Fe 3 O 4 @SiO 2 were produced using a modified Stöber approach and functionalized with (3-amino-propyl) APTES triethoxysilane and ethylene-diamine-tetra-acetic acid (EDTA). Magnetic nano adsorbents exhibit many attractive opportunities for different purposes due to their easy removal and possibility of r...

The objectives of this work were to prepare, characterize the CaCO 3 nanoparticles as admixture derived from eggshell waste to improve the mechanical properties and performance of oil well cement (OWC) and to evaluate the interactions regarding the cement-admixture compatibility. The results suggest to use the combination of ultrafine grinding (bal...

Crude oil flowing in pipelines suffers from a problem fluid flow pressure drop and high energy consumption for fluid pumping. The flow can be enhanced using either viscosity reduction or drag reduction techniques. Drag reduction (DR) can be considered as the most effective and applicable method. Such method contributes in reducing the frictional en...

The aim of the present work is to solve the problem of fouling in boiler pipes and improve energy efficiency of steam boilers in the south refineries company, Al-Basrah province, Iraq. An automatic control system with a novel electronic circuit has been proposed to achieve this aim. This system consists of an on-line conductivity sensor and a condu...

People are completely dependent on groundwater for drinking and irrigation in distant Iraq. In many places, copper ions are one of the primary pollutants found in extra quantities in groundwater. The current work uses watermelon shell for removing of copper ions from groundwater. An initial concentration of 10 mg / L and an adsorbent particle size...

Flow of crude oil in pipelines suffers from a problem of fluid flow pressure drop and high energy consumption for fluid pumping. Flow can be enhanced using either viscosity reduction or drag reduction techniques. Drag reduction (DR) is considered as a most effective and most applicable method.

The flow of crude oil in pipelines suffers from a problem of fluid flow pressure drop and high-energy consumption for pumping especially in low temperatures environment. Flow can be enhanced using viscosity either reduction or drag reduction techniques. Drag reduction is considered as the most effective and most applicable method. The technique con...

Crude oil is considered as a major source of energy all over the world. Midstream refers to the various methods of transportation. Important issues that oil transportation methods face are spills and inadvertent emissions. Therefore, most of the technology developments in transportation methods are aimed at reducing emissions, increasing efficiency...

The pressure wave is a serious problem in crude oil transportation pipelines. It is generated at the beginning and at the end of crude oil pumping process or as a result of sudden closing of valves. The high turbulence fluid particles in presence of pressure wave resulting in sever stresses on pipe walls needing for maintenance and replacement afte...

Blow down water is the part of water that is purposely drained during the boiler operation to limit the level of impurities in boiler water to an acceptable level. So it is contains large quantity of heat energy. The aim of the present work is to improve energy efficiency of steam boilers in the south refineries company/Al-Basrah. This aim has been...

The objective of the study is to treat industrial wastewater and perform a thermodynamic experimental study for more economical and efficient adsorption process. This has been done by biosorption and chemisorption of chromium ions from synthetic wastewater into already prepared pomegranate peel as a natural adsorbent. Pomegranate peel proved to be...

In Al-Rustamiyah sewage treatment plant in the east of Baghdad city, capital of Iraq, the membrane bioreactor suffering from a severe biofouling problem. The main reason for this problem is inefficient and inadequate aeration process. The objective of this work is to control fouling and to improve the energy efficiency of the submerged membrane bio...

Al-Rustamiyah plant is the oldest and biggest sewage treatment plant in Iraq; it locates in the south of Baghdad city. The plant suffers from serious problems associated with overflow and low capacity. The present work aims to upgrade the heart of biological treatment process through suggesting the use of membrane bioreactor; (MBR). In this work, f...

The aim of the present work is to reduce the viscosity of Iraqi heavy crude oil to enhance its flowability in pipelines. This has been done by applying an effective electrical field through design and implementation of an invented capacitor. In order to attain this objective; an experimental rig has been built. It consisted of: a crude oil pipe, a...

Copper ion Cu(II) is among the main pollutants present in excessive amounts in underground water in many locations in Iraq. The present work studies adsorptive removal of Cu(II) from well water using waste materials such as watermelon shell, lemon, and banana peels. Influences of many parameters like initial concentration, dosing, contact time, pH,...

Abstract—This study has been devoted to apply the optimization technique involving central composite rotatable design to seek on the optimum conditions for using novel nanosilica (NS) in concrete; this nano silica has been previously prepared from Iraqi sand. Nano silica sand has been shown to improve workability and strength. This research present...

Abstract—This study has been devoted to apply the optimization technique involving central composite rotatable design to seek on the optimum conditions for using novel nanosilica (NS) in concrete; this nano silica has been previously prepared from Iraqi sand. Nano silica sand has been shown to improve workability and strength. This research present...

This study has been devoted to apply the optimization technique involving central composite rotatable design to seek on the optimum conditions for using novel nanosilica (NS) in concrete; this nano silica has been previously prepared from Iraqi sand. Nano silica sand has been shown to improve workability and strength. This research presents the com...

Palm oil mill effluent (POME) was produced in huge amounts in Malaysia, and if it discharged into the environment, it causes a serious problem regarding its high content of nutrients and high levels of COD and BOD concentrations. This study was devoted on POME treatment and purification using an integrated process consisting of microalgae treatment...

The objective of this work is to prepare, and characterize silica nanoparticles (NS) for the first time from Ardma silica sand, which is obtained from Anbar province in the west of Iraq. The procedure suggests using a combination of ball milling and heating process, then evaluating the influence of (NS) addition on mechanical properties (compressiv...

Palm oil mill effluent (POME) wastewater was produced in huge amounts in Malaysia, and if it discharged into the environment, it causes a serious problem regarding its high content of nutrients. This study was devoted to POME wastewater treatment with microalgae. The main objective was to find the optimum conditions (retention time, and pH) in the...

This paper is devoted to study the effect of condensation temperature changing on the performance of absorption cooling system working with on solar energy .It aims at reducing the cost of the absorption cooling system and reducing the temperature of the generator to enable the cooler to work with solar collector more economical and to reduce the e...

The objective of this study is to promote the performance of the hollow fiber ultrafiltration (UF) membrane using air-liquid two-phase flow to depress the concentration polarization layer. The effect of various operating conditions such as, feed concentration, flow rate, temperature, transmembrane pressure, and air flow rate on UF performance was e...

Iraqi deoil asphalt as a source of carbon is used to prepare the carbon nanospheres (CNS) by chemical vapor deposition (CVD) method. Asphalt after further chemical treatment to remove aromatic oil and impurities was crushed, weighted and evaporated under inert atmosphere using argon. The vapor/argon mixture was allowed to pass through high temperat...

In electric motors, electrical energy is transformed to mechanical energy or vice versa. Electrical energy has to be transformed from a stationary component into moving one, which is done by copper commentator in sliding contact with graphite brushes. This study includes a technical method to prepare metal – graphite composite brushes. The prepared...

Gas-Liquid-Solid system as slurry in a reactor have a wide range of applications in industry, a slurry reactor is a vessel containing the catalyst suspended in a liquid phase. In this study, we develop a CFD model to predict the gas holdup at different gas superficial velocities. The experiments were done in a gas-liquid-solid slurry bubble column...

In electric motors, electrical energy is transformed to mechanical energy or vice versa. Electrical energy has to be transformed from a stationary component into moving one, which is done by copper commentator in sliding contact with graphite brushes. This study includes a technical method to prepare metal – graphite composite brushes. The prepared...