Isam Al Zubaidi - Academia.edu (original) (raw)

Papers by Isam Al Zubaidi

European Journal of Engineering and Technology Research

The drying process was chosen as a case study for the experimental design project. This design pr... more The drying process was chosen as a case study for the experimental design project. This design project is related to a heat and mass transfer laboratory for undergraduate students. The drying process was performed at different operating variables such as sample drying temperatures, air velocities, and sample particle size. Many runs were performed for each operating variable and the work was twice repeated for consistency. Each experimental run was continued until no further mass change was observed. The mass of material, wet and dry bulb temperature and air velocity were collected as a function of time. Many mathematical formulas were applied. The kinetics and the model of the drying process were estimated. The heat and mass transfer coefficients were calculated and related to the air temperature, moisture content, velocities, and the size of the sample. It was found that the drying process of wet sand followed the proposed model by Wang and Singh. Many other drying relations were ...

European Journal of Engineering Research and Science, 2019

Due to the depletion of light crude oil reserves, heavy crude oil and residues are the alternativ... more Due to the depletion of light crude oil reserves, heavy crude oil and residues are the alternatives to meet ‎the ‎increasing global demand for light oil products. Heavy crude oil and residues are characterized by the presence of heavy ‎hydrocarbon ‎compounds which contain high levels of impurities such as metals, nitrogen, and sulfur-containing compounds. ‎Methods of ‎upgrading are required to increase refining efficiencies and to obtain high-quality products.‎ Upgrading processes can be categorized into three categories; ‎carbon rejection processes, hydrogen addition processes, and a combination of the two. The catalyst can be used with any of these processes for better improvement. Many types of research have been carried out to develop a high-performance process which is stable, high commercial products yield, and low solids formation. In this work, recent advances on petroleum residues upgrading with catalyst, solvents, and thermal cracking were reviewed. Advantages and disadvan...

Environmental Technology & Innovation, 2018

Abstract Soil remediation was investigated from waste oil contamination. Contamination of differe... more Abstract Soil remediation was investigated from waste oil contamination. Contamination of different soil particle diameters was prepared with different dosage of waste oil contamination. Solvent extraction technique was employed for remediation using batch process. The contaminated soil was treated with many solvents and different solvents to oil ratios. The solvent was recovered and reused. The soil and waste oil were analyzed before and after remediation process to study the performance of soil remediation process. A mathematical model for remediation process was constructed. The performance of different solvents for soil remediation is as follow: LPG Condensate > Dichloromethane > Trichloromethane > MEK > Stabilized Condensate > Hexane > Heptane > 1-butanol > toluene > ethyl acetate > 2-propanol Physical properties of recovered waste oil showed lower carbon residue, ash content, and asphaltene content due to the adsorption of heavy molecular weight hydrocarbons inside the pores of the soil after extraction process. The treated soil may need further regeneration process to recover it from the entire heavy molecules. Two stages extraction process was performed to remove all the heavy constituents from the pores of the contaminated soil.

Applied System Innovation, 2018

Progress in Petrochemical Science, 2018

International Journal of Advances in Chemical Engineering and Biological Sciences, 2015

Environmental Technology & Innovation, 2016

Abstract Remediation of oil-polluted water was studied using waste tire cord fiber WTCF as a wast... more Abstract Remediation of oil-polluted water was studied using waste tire cord fiber WTCF as a waste fibrous sorbent. The rate of sorption, sorption capacity, oil retention, water uptake, adsorption isotherm model, and kinetic behavior were evaluated. It was found that the oil sorption capacity was equal to 15.45 g oil/g sorbent. For fixed amount of sorbent, oil sorption was increased with an increasing of the amount of oil until equilibrium state was reached. The sorbent was proven to have a high retention time; it can save 66.3% of the adsorbed oil after five minutes drainage. This property makes the material as a unique material to have such high retention time. The reusability of sorbents showed that this sorbent can have 75.7% of the sorption capacity after 10 cycles. The total amount of adsorbed oil was 107.66 g oil/g of WTCF for 10 cycles. Langmuir, Frendlich, Timken, Hurkins–Jura, Halsay, Radlich–Peterson, and Dubinin–Radushkevich adsorption isotherm models were applied to fit the adsorption remediation process. The remediation process using WTCH was following a second order rate kinetic and Radlich–Peterson adsorption isotherm model.

Desalination and Water Treatment, 2015

2015 6th International Conference on Modeling, Simulation, and Applied Optimization (ICMSAO), 2015

Batch adsorption equilibrium of the sulfur compounds from diesel oil using two types of commercia... more Batch adsorption equilibrium of the sulfur compounds from diesel oil using two types of commercial activated carbon was studied in a two-level factorial experimental design method. This technique has been used to investigate the impacts of several factors controlling the adsorption process, such as source of sorbent material, amount of sorbent material used, and temperature. High percentages of adsorption of sulfur compounds were obtained using the sorbent materials tested. The analysis of variance and the factorial design of experiments showed that the amount of sorbent material used was the most significant factor under the experimental ranges studied. Also, a predictive regression model for the experimental data was generated. The capability of the generated regression model was studied, where excellent agreement between the experimental and predicted values was observed.

-Potato peels was used for remediation of water from waste oil spill. The remediation process was... more -Potato peels was used for remediation of water from waste oil spill. The remediation process was investigated at room temperature, static state, and short and medium term adsorption process. The bouncy test, sorption capacity, retention time, and reusability were investigated. The adsorption equilibrium model and the kinetic model were determined. The potato peels was treated and passed the bouncy test. The oil sorption capacity was 2.15 g of oil/g sorbent. The reusability was not good as other natural sorbents. The adsorption process of using potato peels in adsorbing waste lubricating oil from the surface of water followed the second order kinetics adsorption process.

-The inhibitive effect of (crude) waste glycerol from biodiesel manufacturing process on the corr... more -The inhibitive effect of (crude) waste glycerol from biodiesel manufacturing process on the corrosion behavior of steel was investigated. The inhibitory effects were studied on steel in 0.5 N hydrochloric acid solutions, using a weight loss method, and Scanning Electron Microscopy (SEM) techniques. The inhibition effect was studied by varying concentrations of inhibitors (0.1, 0.3, 0.5, 0.8, and 1.0%) by weight of solution. The corrosion of steel was inhibited continuously with the amount of inhibitor added. It reached to very high level of inhibition with 0.8 and 1% of inhibitor concentration. The adsorption isotherm models were applied and it is shown that the adsorption of inhibitor layer followed Langmuir isotherm model. The Scanning Electron Microscopy showed that the inhibitor is covering the surface of the metal so that it prevents the metal surface to be in contact with the acid medium.

-The efflux time measurement from vertical carbon steel vessel was measured using 1,2, and 3-pipe... more -The efflux time measurement from vertical carbon steel vessel was measured using 1,2, and 3-pipe lines located at the bottom of the tank having different lengths and diameters. The efflux time experimental setup was developed and designed using Solid Edge software. The setup was built and commissioned at the University of Regina's Engineering Workshop and will be used to teach relevant engineering laboratory concepts at the undergraduate level. The experimental setup is equipped with pressure gauges, flow meters and level sensors necessary to collect meaningful data. The efflux time was measured for each configuration of length and diameter of exit pipes. The results obtained from the develop setup were analyzed and compared to relevant results available from the open literature.

Remediation of oil polluted water was studied using two bio-degradable organic natural sorbents. ... more Remediation of oil polluted water was studied using two bio-degradable organic natural sorbents. These natural sorbents were flower of Arabic herbs Massofa and Youda. Short period static sorption process was performed in this work. Many parameters such as rate of sorption, sorption capacity, oil retention, water and oil uptake, and reusability were studied. Using different amount of sorbents, the average oil sorption capacity for Youda was 6.281 g of oil absorbed/g of sorbent whereas for Masoofa it was 5.415 g of oil absorbed/g of sorbent. The performance of these biodegradable sorbents was compared with other biomass sorbent materials available in the literature. It was found that Massofa and Youda were promising materials for removing oil spill from the surface of water.

This research conveys a unique work in order to remove sulfur from heavy oil using surfactant as ... more This research conveys a unique work in order to remove sulfur from heavy oil using surfactant as extracting materials. Different surfactants were used in this work. Among these surfactants are; demulsifier, Tween 20, Tween 40, and Tween 85. This work was done in a batch wise scale at room temperature. The demulsifier, surfactant and water were added to the heavy oil to extract the sulfur containing compounds from the oil phase to new phase which is produced after settling overnight. Three phases were formed after settlement; oil, water, and solid/semi-solid layers. Sulfur content and other physical properties were measured before and after the treatment process. The sulfur recovery was equal to 35.32% using 5 % tween 20, the other two surfactants showed 33.45 and 34% using 5% Tween 40 and 10% of tween 85. The physical properties were improved during this process due to the deposit semi solid/solid layer of ash and carbon from the heavy oil.

Remediation of oil-polluted water from waste lubricating oil by adsorption was investigated using... more Remediation of oil-polluted water from waste lubricating oil by adsorption was investigated using pomegranate peels powder. Many parameters such as the oil sorption capacity, oil retention, water and oil uptake, kinetic behavior of remediation process, adsorption isotherm model, and reusability were studied. The oil sorption capacity of adsorbent was equal to 2.316 g oil /g sorbent. The sorbent has a very good retention time; it can keep 48% of the adsorbed oil after three minutes of drainage. This property makes the material a unique behavior to keep the oil for this long time. The reusability of sorbents showed a 76.2 % of the sorption capacity after 6 reusability cycles. The total amount of adsorbed oil is 11.659 g oil/ g pomegranate peels powder. The kinetic study showed that the rate of adsorption followed the first order kinetics. Langmuir, Frendlich adsorption isotherm models were applied to check if any of these models is fitting the adsorption remediation process.

The effect of diffusivity of petroleum products on human health in contaminated areas was investi... more The effect of diffusivity of petroleum products on human health in contaminated areas was investigated. The diffusivity of light naphtha, different brands of gasoline, gasoline-ethanol blends, and jet fuel were examined as a function of temperature. The diffusivities were related to the density, vapor pressure, and the types of hydrocarbons present in each product. The diffusivity of different gasoline-ethanol blends was also studied. The temperature has an effective influence on diffusivity. The increasing of atmospheric temperature means an increasing in the diffusivity and increasing in the impact of human health and especially in closed areas as hydrocarbon vapors contaminated area.

Proceedings of the 3rd International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'16), May 1, 2016

The inhibitive effect of (crude) waste glycerol from biodiesel manufacturing process on the corro... more The inhibitive effect of (crude) waste glycerol from biodiesel manufacturing process on the corrosion behavior of steel was investigated. The inhibitory effects were studied on steel in 0.5 N hydrochloric acid solutions, using a weight loss method, and Scanning Electron Microscopy (SEM) techniques. The inhibition effect was studied by varying concentrations of inhibitors (0.1, 0.3, 0.5, 0.8, and 1.0%) by weight of solution. The corrosion of steel was inhibited continuously with the amount of inhibitor added. It reached to very high level of inhibition with 0.8 and 1% of inhibitor concentration. The adsorption isotherm models were applied and it is shown that the adsorption of inhibitor layer followed Langmuir isotherm model. The Scanning Electron Microscopy showed that the inhibitor is covering the surface of the metal so that it prevents the metal surface to be in contact with the acid medium.

Proceedings of the 6th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'19), Jun 1, 2019

Vapor diffusion was studied from volatile liquids of ethanol blend gasoline. The studying was con... more Vapor diffusion was studied from volatile liquids of ethanol blend gasoline. The studying was conducted at two operating temperatures of 40 and 50 oC and blending of 0, 5, 10, 20, 30, 40, and 100 % by volume ethanol. The diffusion coefficients of the blend showed an increase in diffusion coefficient in air with increasing temperature and % of ethanol added. The diffusivity coefficient of gasoline-ethanol followed the following polynomial equations:

Environmental Technology & Innovation

European Journal of Engineering Research and Science

Petroleum refinery uses many catalysts such as hydroprocessing catalyst HPC, fluid catalytic cra... more Petroleum refinery uses many catalysts such as hydroprocessing catalyst HPC, fluid catalytic cracking catalyst FCCC, reforming catalyst RC, etc. During the refining processes, the catalysts are deactivated; the spent catalysts are regarded as hazardous toxic materials due to heavy metals, coke, other poisonous compounds, and hydrocarbons. Huge amount of spent catalysts SC is generated which is expected to increase with expansion capacities of available refineries processes. This paper is reviewing the mechanisms of refining catalyst and the deactivation processes and focusing on spent catalysts management. Management of spent catalyst includes four main options; select the catalysts which reduce the generation of SC by switching to more environment friendly, longer lifetime and less toxic catalyst during the refining process; regenerate the SC; and precious metal recovery should be explored and reuse for other applications. The selection can be based on many factors such as safety,...