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Muftah H. El-Naas
Gas Processing Center College of Engineering Qatar University Doha, Ad Dawhah 2713 Qatar

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Review
Published: 22 June 2021 in ChemElectroChem
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Carbon dioxide conversion into useful products has been gaining considerable attention as a global-warming-mitigation technique. The electrochemical conversion of CO2 into high-value chemicals involves the utilization of electrical energy in the presence of an effective catalyst. The process products depend on the number of transferred electrons during the reaction and the characteristics of the electrode. Recently, electrodes coupled with active catalysts have been used to convert CO2 into valuable products including formic acid, hydrocarbons, and syngas. This review offers an overview of the recent literature on the electrochemical conversion of CO2 to valuable products, with an emphasis on the production of formate/formic acid. In addition, it compares the main features of electrochemical conversion to other techniques and summarizes their key advantages. It also provides future perspective for research and development, such as the need for novel and selective catalysts to obtain high conversion and product yield with low energy consumption.

ACS Style

Shaima A. Al‐Tamreh; Mohamed H. Ibrahim; Muftah H. El‐Naas; Jan Vaes; Deepak Pant; Abdelbaki Benamor; Abdulkarem Amhamed. Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review. ChemElectroChem 2021, 1 .

AMA Style

Shaima A. Al‐Tamreh, Mohamed H. Ibrahim, Muftah H. El‐Naas, Jan Vaes, Deepak Pant, Abdelbaki Benamor, Abdulkarem Amhamed. Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review. ChemElectroChem. 2021; ():1.

Chicago/Turabian Style

Shaima A. Al‐Tamreh; Mohamed H. Ibrahim; Muftah H. El‐Naas; Jan Vaes; Deepak Pant; Abdelbaki Benamor; Abdulkarem Amhamed. 2021. "Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review." ChemElectroChem , no. : 1.

Tutorial review
Published: 18 June 2021 in Green Chemistry
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This review summarises the structural-compositional engineering of carbon nitride (g-C3N4) for electrocatalytic and photocatalytic CO2 reduction to chemicals and fuels experimentally and theoretically.

ACS Style

Qingqing Lu; Kamel Eid; Wenpeng Li; Aboubakr M. Abdullah; Guobao Xu; Rajender S. Varma. Engineering graphitic carbon nitride (g-C3N4) for catalytic reduction of CO2 to fuels and chemicals: strategy and mechanism. Green Chemistry 2021, 23, 5394 -5428.

AMA Style

Qingqing Lu, Kamel Eid, Wenpeng Li, Aboubakr M. Abdullah, Guobao Xu, Rajender S. Varma. Engineering graphitic carbon nitride (g-C3N4) for catalytic reduction of CO2 to fuels and chemicals: strategy and mechanism. Green Chemistry. 2021; 23 (15):5394-5428.

Chicago/Turabian Style

Qingqing Lu; Kamel Eid; Wenpeng Li; Aboubakr M. Abdullah; Guobao Xu; Rajender S. Varma. 2021. "Engineering graphitic carbon nitride (g-C3N4) for catalytic reduction of CO2 to fuels and chemicals: strategy and mechanism." Green Chemistry 23, no. 15: 5394-5428.

Review
Published: 10 June 2021 in ChemElectroChem
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Rechargeable zinc-air batteries (RZABs) are one of the most promising next-generation energy storage technologies for stationary applications (home and industry), wearable and portable electronics, and transportation (including electric vehicles) due to their high energy density, environmental-friendliness, safety, and low cost. However, RZABs still face serious challenges (such as sluggish oxygen reactions, poor durability, inferior reversibility of the zinc anode, and low cell energy efficiency) that conspire against their widespread commercialization. The reactions that occur at the three key components of the RZAB (air cathode, zinc anode, and electrolyte) co-operatively conspire against its performance. Thus, this review focuses on the bifunctional electrocatalytic events at the cathode (i.e., oxygen reduction reaction (ORR) and oxygen evolution reaction (OER)). That is in addition to the recent developments aimed at mitigating the performance-limiting events at the anode and the electrolytes. This review directs the attention of researchers and users to the critical areas for the development of the next-generation RZABs.

ACS Style

Adewale Kabir Ipadeola; Aderemi Bashir Haruna; Lesego Gaolatlhe; Augustus Kelechi Lebechi; Jiashen Meng; Quan Pang; Kamel Eid; Aboubakr Abdullah; Kenneth Ikechukwu Ozoemena. Efforts at Enhancing Bifunctional Electrocatalysis and Related Events for Rechargeable Zinc‐Air Batteries. ChemElectroChem 2021, 1 .

AMA Style

Adewale Kabir Ipadeola, Aderemi Bashir Haruna, Lesego Gaolatlhe, Augustus Kelechi Lebechi, Jiashen Meng, Quan Pang, Kamel Eid, Aboubakr Abdullah, Kenneth Ikechukwu Ozoemena. Efforts at Enhancing Bifunctional Electrocatalysis and Related Events for Rechargeable Zinc‐Air Batteries. ChemElectroChem. 2021; ():1.

Chicago/Turabian Style

Adewale Kabir Ipadeola; Aderemi Bashir Haruna; Lesego Gaolatlhe; Augustus Kelechi Lebechi; Jiashen Meng; Quan Pang; Kamel Eid; Aboubakr Abdullah; Kenneth Ikechukwu Ozoemena. 2021. "Efforts at Enhancing Bifunctional Electrocatalysis and Related Events for Rechargeable Zinc‐Air Batteries." ChemElectroChem , no. : 1.

Review
Published: 06 May 2021 in Nanomaterials
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Catalytic methane decomposition (CMD) is a highly promising approach for the rational production of relatively COx-free hydrogen and carbon nanostructures, which are both important in multidisciplinary catalytic applications, electronics, fuel cells, etc. Research on CMD has been expanding in recent years with more than 2000 studies in the last five years alone. It is therefore a daunting task to provide a timely update on recent advances in the CMD process, related catalysis, kinetics, and reaction products. This mini-review emphasizes recent studies on the CMD process investigating self-standing/supported metal-based catalysts (e.g., Fe, Ni, Co, and Cu), metal oxide supports (e.g., SiO2, Al2O3, and TiO2), and carbon-based catalysts (e.g., carbon blacks, carbon nanotubes, and activated carbons) alongside their parameters supported with various examples, schematics, and comparison tables. In addition, the review examines the effect of a catalyst’s shape and composition on CMD activity, stability, and products. It also attempts to bridge the gap between research and practical utilization of the CMD process and its future prospects.

ACS Style

Ahmed Gamal; Kamel Eid; Muftah El-Naas; Dharmesh Kumar; Anand Kumar. Catalytic Methane Decomposition to Carbon Nanostructures and COx-Free Hydrogen: A Mini-Review. Nanomaterials 2021, 11, 1226 .

AMA Style

Ahmed Gamal, Kamel Eid, Muftah El-Naas, Dharmesh Kumar, Anand Kumar. Catalytic Methane Decomposition to Carbon Nanostructures and COx-Free Hydrogen: A Mini-Review. Nanomaterials. 2021; 11 (5):1226.

Chicago/Turabian Style

Ahmed Gamal; Kamel Eid; Muftah El-Naas; Dharmesh Kumar; Anand Kumar. 2021. "Catalytic Methane Decomposition to Carbon Nanostructures and COx-Free Hydrogen: A Mini-Review." Nanomaterials 11, no. 5: 1226.

Research article
Published: 03 May 2021 in International Journal of Energy Research
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In a previous work, the overall performance of modified Solvay process was investigated in the absence of ammonia, where carbon dioxide and brine treatments were accomplished in a single reaction and in the presence of calcium hydroxide (Ca(OH)2). In this study, the impact of alkaline and amphoteric oxides, namely potassium hydroxide (KOH) and aluminum oxide (Al2O3), on the pH level, CO2 capture capacity, ions reduction, and type of produced solids was investigated at a temperature of 20°C and a gas flow rate of 1 L/min. At the stoichiometric ratio and less than the solubility limit, the KOH/brine mixture achieved a CO2 uptake of 0.31 g CO2/g KOH. In comparison, about 0.92 g of CO2 was captured by 1 g of CaO when CaO was added to the brine in an amount that was more than the solubility limit but less than the stoichiometric ratio. Moreover, the percentage of the ions reduction for the KOH and CaO was almost the same except for the sulfate ions, as the best removal was for the CaO. The poorest CO2 capture and ions removal occurred with the Al2O3. X‐ray diffraction was used to identify most of the solid products, and the obtained results proved that KOH is a promising alkaline for the combined process. In addition, potassium chloride crystals were produced when KOH was utilized, which is a very valuable product, and it can also be easily separated. Although Al2O3 showed no reactivity, it revealed good results in terms of magnesium ions recovery and could be considered as a coagulant for recovering magnesium ions in the reject brine solution.

ACS Style

Aya A‐H. I. Mourad; Ameera F. Mohammad; Mohammednoor Altarawneh; Ali H. Al‐Marzouqi; Muftah H. El‐Naas; Mohamed H. Al‐Marzouqi. Effects of potassium hydroxide and aluminum oxide on the performance of a modified solvay process for CO 2 capture: A comparative study. International Journal of Energy Research 2021, 45, 13952 -13964.

AMA Style

Aya A‐H. I. Mourad, Ameera F. Mohammad, Mohammednoor Altarawneh, Ali H. Al‐Marzouqi, Muftah H. El‐Naas, Mohamed H. Al‐Marzouqi. Effects of potassium hydroxide and aluminum oxide on the performance of a modified solvay process for CO 2 capture: A comparative study. International Journal of Energy Research. 2021; 45 (9):13952-13964.

Chicago/Turabian Style

Aya A‐H. I. Mourad; Ameera F. Mohammad; Mohammednoor Altarawneh; Ali H. Al‐Marzouqi; Muftah H. El‐Naas; Mohamed H. Al‐Marzouqi. 2021. "Effects of potassium hydroxide and aluminum oxide on the performance of a modified solvay process for CO 2 capture: A comparative study." International Journal of Energy Research 45, no. 9: 13952-13964.

Journal article
Published: 02 March 2021 in Heliyon
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Inert-particles spouted bed reactor (IPSBR) is characterized by intense mixing generated by the circular motion of the inert particles. The operating parameters play an important role in the performance of the IPSBR system, and therefore, parameter optimization is critical for the design and scale-up of this gas–liquid contact system. Computational fluid dynamics (CFD) provides detailed modeling of the system hydrodynamics, enabling the determination of the operating conditions that optimize the performance of this contact system. The present work optimizes the main IPSBR operating parameters, which include a feed-gas velocity in the range 0.5–1.5 m/s, orifice diameter in the range 0.001–0.005 m, gas head in the range 0.15–0.35 m, mixing-particle diameter in the range 0.009–0.0225 m, and mixing-particle to reactor volume fraction in the range 2.0–10.0 vol % (which represents 0.01–0.1 kg of mixing particles loading). The effects of these parameters on the average air velocity and average air volume fraction in the upper, middle, and conical regions of the reactor were studied. The specific distance for each region has been measured from the orifice point to be 50 mm for the conical region, 350 mm for the middle region and 550 mm for the upper rejoin. The selected factors were optimized to obtain the minimum air velocity distribution (maximum gas residence time) and the maximum air volume fraction (maximum interfacial area concentration) because these conditions will increase the gas holdup, the gas–liquid contact area, and the mass transfer coefficient among phases. Response surface methodology (RSM) was used to determine the optimum operating conditions. The regression analysis showed an excellent fit of the experimental data to a second-order polynomial model. The interaction between the process variables was evaluated using the obtained three-dimensional surface plots. The analysis revealed that under the optimized parameters of a feed-gas velocity of 1.5 m/s, orifice diameter of 0.001 m, gas head of 0.164 m, mixing-particle diameter of 0.0225 m, and mixing-particle loading of 0.02 kg, the minimum average air velocity and highest air volume fraction were observed throughout the reactor.

ACS Style

A. Mohammad; A.A.H.I. Mourad; A.H. Al-Marzouqi; M.H. El-Naas; B. Van der Bruggen; M. Al-Marzouqi; F. Alnaimat; M. Suleiman; M. Al Musharfy. CFD and statistical approach to optimize the average air velocity and air volume fraction in an inert-particles spouted-bed reactor (IPSBR) system. Heliyon 2021, 7, e06369 .

AMA Style

A. Mohammad, A.A.H.I. Mourad, A.H. Al-Marzouqi, M.H. El-Naas, B. Van der Bruggen, M. Al-Marzouqi, F. Alnaimat, M. Suleiman, M. Al Musharfy. CFD and statistical approach to optimize the average air velocity and air volume fraction in an inert-particles spouted-bed reactor (IPSBR) system. Heliyon. 2021; 7 (3):e06369.

Chicago/Turabian Style

A. Mohammad; A.A.H.I. Mourad; A.H. Al-Marzouqi; M.H. El-Naas; B. Van der Bruggen; M. Al-Marzouqi; F. Alnaimat; M. Suleiman; M. Al Musharfy. 2021. "CFD and statistical approach to optimize the average air velocity and air volume fraction in an inert-particles spouted-bed reactor (IPSBR) system." Heliyon 7, no. 3: e06369.

Data article
Published: 30 January 2021 in Data in Brief
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Fresh water resources on the earth are less than 0.2%; meanwhile, around 80% of the freshwater is consumed daily in agriculture, industries, and household activities [1], [2]. There is an essential need to develop efficient adsorbents for wastewater treatment [1], [2], [3], [4], [5], [6], in this regards, hereafter we present the rationale synthesis and characterization of hybrid natural bentonite clay modified with Calix [4] arene (denoted as B-S-Calix) as efficient adsorbents for toxic metals from wastewater. This is driven by the facile photo-radical thiol-yne addition among the thiolated clay and an alkynylated calix[4]arene. The morphology, surface modifications, and Thermal degradation of B, B-S, and B-S-Calix were investigated using TEM, FTIR, and TGA techniques. The adsorption performance of B, BS and B-S-Calix towards toxic metals including cadmium (II) ion [Cd (II)], zinc (II) ion [Zn(II)], lead(II) ion [Pb(II)], strontium(II) ion [Sr (II)], cobalt(II) ion [Co (II)], copper(II) ion [Cu(II)], and mercury (II) ion [Hg(II)] from wastewater were benchmarked 25 °C. These data are related to the article entitled “hybrid Clay/Calix[4]arene Calix[4]arene-clicked clay through thiol-yne addition for the molecular recognition and removal of Cd(II) from wastewater’’ [7].

ACS Style

Khouloud Jlassi; Kamel Eid; Mostafa H. Sliem; Aboubakr M. Abdullah; Mohamed M. Chehimi. Data on the fabrication of hybrid calix [4]arene-modified natural bentonite clay for efficient selective removal of toxic metals from wastewater at room temperature. Data in Brief 2021, 35, 106799 .

AMA Style

Khouloud Jlassi, Kamel Eid, Mostafa H. Sliem, Aboubakr M. Abdullah, Mohamed M. Chehimi. Data on the fabrication of hybrid calix [4]arene-modified natural bentonite clay for efficient selective removal of toxic metals from wastewater at room temperature. Data in Brief. 2021; 35 ():106799.

Chicago/Turabian Style

Khouloud Jlassi; Kamel Eid; Mostafa H. Sliem; Aboubakr M. Abdullah; Mohamed M. Chehimi. 2021. "Data on the fabrication of hybrid calix [4]arene-modified natural bentonite clay for efficient selective removal of toxic metals from wastewater at room temperature." Data in Brief 35, no. : 106799.

Original research article
Published: 15 January 2021 in Frontiers in Bioengineering and Biotechnology
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The gas-to-liquid (GTL) process generates considerable amounts of wastewater that are highly acidic and characterized by its high chemical oxygen demand (COD) content, due to the presence of several organic pollutants, such as alcohols, ketones, aldehydes, and fatty acids. The presence of these organics in the process water may lead to adverse effect on the environment and aquatic life. Thus, it is necessary to reduce the COD content of GTL process water to an acceptable limit before discharging or reusing the treated water. Due to several advantages, biological treatment is often utilized as the main step in GTL process water treatment plants. In order to have a successful biotreatment process, it is required to choose effective and suitable bacterial strains that have the ability to degrade the organic pollutants in GTL process water. In this work, bacterial strains were isolated from the GTL process water, identified by 16S rRNA gene sequencing and then used in the biodegradation process. The detailed identification of the strains confirmed the presence of three organics-degrading bacteria identified as Alcaligenes faecalis, Stenotrophomonas sp., and Ochrobactrum sp. Furthermore, biodegradation experiments were carried out and confirmed that the pure culture as well as the mixed culture consortium of the bacterial strains has the ability to reduce the organic pollutants in GTL process water. However, the growth rate and biodegradation efficiency depend on the type of strains and the initial COD content. Indeed, the removal percentage and growth rate were enhanced after 7 days for all cultures and resulted in COD reduction up to 60%. Moreover, the mixed culture of bacterial strains can tolerate and treat GTL process water with a variety of ranges of COD contents.

ACS Style

Riham Surkatti; Zulfa A. Al Disi; Muftah H. El-Naas; Nabil Zouari; Mark C. M. Van Loosdrecht; Udeogu Onwusogh. Isolation and Identification of Organics-Degrading Bacteria From Gas-to-Liquid Process Water. Frontiers in Bioengineering and Biotechnology 2021, 8, 1 .

AMA Style

Riham Surkatti, Zulfa A. Al Disi, Muftah H. El-Naas, Nabil Zouari, Mark C. M. Van Loosdrecht, Udeogu Onwusogh. Isolation and Identification of Organics-Degrading Bacteria From Gas-to-Liquid Process Water. Frontiers in Bioengineering and Biotechnology. 2021; 8 ():1.

Chicago/Turabian Style

Riham Surkatti; Zulfa A. Al Disi; Muftah H. El-Naas; Nabil Zouari; Mark C. M. Van Loosdrecht; Udeogu Onwusogh. 2021. "Isolation and Identification of Organics-Degrading Bacteria From Gas-to-Liquid Process Water." Frontiers in Bioengineering and Biotechnology 8, no. : 1.

Research article
Published: 05 January 2021 in Journal of the American Chemical Society
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The development of low-dimensional (LD) supramolecular materials with multifunctional electrocatalytic properties has sparked the attention of the catalysis community. Herein, we report the synthesis of a new class of 0D–2D heterostructures composed of boron carbon nitride nanosheets (BCN NSs) and fullerene molecules (C60/F) that exhibit multifunctional electrocatalytic properties for the hydrogen evolution/oxidation reactions (HER/HOR) and the oxygen evolution/reduction reactions (OER/ORR). The electrocatalytic properties were studied with varying F:BCN weight ratios to optimize the intermolecular electron transfer (ET) from the BCN NSs to the electron-accepting C60 molecules. The nanohybrid supramolecular material with 10 wt % F in BCN NSs (10% F/BCN) exhibited the largest Raman and C 1s binding energy shifts, which were associated with greater cooperativity interactions and enhanced ET processes at the F/BCN interface. This synergistic interfacial phenomenon resulted in highly active catalytic sites that markedly boosted electrocatalytic activity of the material. The 10% F/BCN showed the highest tetrafunctional catalytic performance, outperforming the OER catalytic activity of commercial RuO2 catalysts with a η10 of 390 mV and very competitive onset potential values of −0.042 and 0.92 V vs RHE for HER and ORR, respectively, and a current density value of 1.47 mA cm–2 at 0.1 V vs RHE with an ultralow ΔGH* value of −0.03 eV toward the HOR process. Additionally, the 10% F/BCN catalyst was also used as both cathode and anode in a water splitting device, delivering a cell potential of 1.61 V to reach a current density of 10 mA cm–2.

ACS Style

Ariful Ahsan; Tianwei He; Kamel Eid; Aboubakr M. Abdullah; Michael L. Curry; Aijun Du; Alain R. Puente Santiago; Luis Echegoyen; Juan C. Noveron. Tuning the Intermolecular Electron Transfer of Low-Dimensional and Metal-Free BCN/C60 Electrocatalysts via Interfacial Defects for Efficient Hydrogen and Oxygen Electrochemistry. Journal of the American Chemical Society 2021, 143, 1203 -1215.

AMA Style

Ariful Ahsan, Tianwei He, Kamel Eid, Aboubakr M. Abdullah, Michael L. Curry, Aijun Du, Alain R. Puente Santiago, Luis Echegoyen, Juan C. Noveron. Tuning the Intermolecular Electron Transfer of Low-Dimensional and Metal-Free BCN/C60 Electrocatalysts via Interfacial Defects for Efficient Hydrogen and Oxygen Electrochemistry. Journal of the American Chemical Society. 2021; 143 (2):1203-1215.

Chicago/Turabian Style

Ariful Ahsan; Tianwei He; Kamel Eid; Aboubakr M. Abdullah; Michael L. Curry; Aijun Du; Alain R. Puente Santiago; Luis Echegoyen; Juan C. Noveron. 2021. "Tuning the Intermolecular Electron Transfer of Low-Dimensional and Metal-Free BCN/C60 Electrocatalysts via Interfacial Defects for Efficient Hydrogen and Oxygen Electrochemistry." Journal of the American Chemical Society 143, no. 2: 1203-1215.

Review
Published: 16 December 2020 in Processes
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Produced water (PW) is a by-product of oil and gas operations, and its production is foreseen to increase in the upcoming years. Such an increase is justified by various entities through their projection of the expected increase in the demand of oil and gas. The treatment of produced water is a significantly growing challenge for the oil and gas industry that requires serious attention. The first part of this review will present the underlying issue of produced water and relevant practices. With adsorption being defined as the least expensive treatment method, the second part will introduce general adsorption principals. The third part will describe the recent applications of adsorption for the treatment of PW with more focus of categorizing the adsorbents as natural and non-natural adsorbents. The main aim of this review is to shed light on the recent research related to PW treatment using adsorption. This is performed to highlight the shortcomings in PW adsorption research and recommend research pathways that can help in developing the field further.

ACS Style

Roghayeh Yousef; Hazim Qiblawey; Muftah H. El-Naas. Adsorption as a Process for Produced Water Treatment: A Review. Processes 2020, 8, 1657 .

AMA Style

Roghayeh Yousef, Hazim Qiblawey, Muftah H. El-Naas. Adsorption as a Process for Produced Water Treatment: A Review. Processes. 2020; 8 (12):1657.

Chicago/Turabian Style

Roghayeh Yousef; Hazim Qiblawey; Muftah H. El-Naas. 2020. "Adsorption as a Process for Produced Water Treatment: A Review." Processes 8, no. 12: 1657.

Review
Published: 25 September 2020 in Nanomaterials
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MXenes have emerged as promising materials for various mechanical applications due to their outstanding physicochemical merits, multilayered structures, excellent strength, flexibility, and electrical conductivity. Despite the substantial progress achieved in the rational design of MXenes nanostructures, the tutorial reviews on the mechanical properties of self-standing MXenes were not yet reported to our knowledge. Thus, it is essential to provide timely updates of the mechanical properties of MXenes, due to the explosion of publications in this filed. In pursuit of this aim, this review is dedicated to highlighting the recent advances in the rational design of self-standing MXene with unique mechanical properties for various applications. This includes elastic properties, ideal strengths, bending rigidity, adhesion, and sliding resistance theoretically as well as experimentally supported with various representative paradigms. Meanwhile, the mechanical properties of self-standing MXenes were compared with hybrid MXenes and various 2D materials. Then, the utilization of MXenes as supercapacitors for energy storage is also discussed. This review can provide a roadmap for the scientists to tailor the mechanical properties of MXene-based materials for the new generations of energy and sensor devices.

ACS Style

Yassmin Ibrahim; Ahmed Mohamed; Ahmed M. AbdelGawad; Kamel Eid; Aboubakr M. Abdullah; Ahmed Elzatahry. The Recent Advances in the Mechanical Properties of Self-Standing Two-Dimensional MXene-Based Nanostructures: Deep Insights into the Supercapacitor. Nanomaterials 2020, 10, 1916 .

AMA Style

Yassmin Ibrahim, Ahmed Mohamed, Ahmed M. AbdelGawad, Kamel Eid, Aboubakr M. Abdullah, Ahmed Elzatahry. The Recent Advances in the Mechanical Properties of Self-Standing Two-Dimensional MXene-Based Nanostructures: Deep Insights into the Supercapacitor. Nanomaterials. 2020; 10 (10):1916.

Chicago/Turabian Style

Yassmin Ibrahim; Ahmed Mohamed; Ahmed M. AbdelGawad; Kamel Eid; Aboubakr M. Abdullah; Ahmed Elzatahry. 2020. "The Recent Advances in the Mechanical Properties of Self-Standing Two-Dimensional MXene-Based Nanostructures: Deep Insights into the Supercapacitor." Nanomaterials 10, no. 10: 1916.

Journal article
Published: 23 August 2020 in Journal of Water Process Engineering
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Water scarcity is a challenge that is faced worldwide to secure sustainable good quality water resources. Produced water, associated with the production of gas and oil, usually comes as oil contaminated water, creating real problems in water resources’ management. Removing oil content from produced water is crucial to meet the discharge limits set by governmental legislation. Nanocomposites have attracted attention as potential adsorbents due to their high ability to remove oil content from produced water. In this work, Iron oxide/Bentonite nanocomposites (Fe3O4/Bent NC) were synthesized using ultrasound-assisted co-precipitation methods and evaluated them for oil removal from emulsified oil solutions. SEM, EDS, TEM, XRD, FTIR and VSM were used to characterize the synthesized nanocomposites, confirming the successful formation of superparamagnetic Fe3O4/Bent NC. In addition, the characterization analysis showed that iron oxide nanoparticles were uniformly distributed over bentonite surface with a particle size of 13.55 nm. Performance analysis of oil removal using synthesized Fe3O4/Bent NC was carried out by assessing the effect of Nano-adsorbent dosage, oil initial concentration, adsorption time, and solution pH using batch experiments. A removal percentage of 67% after 90 minutes using only 0.1 grams at 100 ppm oil concentration was obtained. The experimental data were described by Langmuir isotherm model, which suggests a monolayer adsorption of oil onto synthesized Fe3O4/Bent NC. The kinetics data were best described using pseudo-second-order kinetics model. Overall, this study confirms the applicability of Fe3O4/Bent NC as a feasible adsorbent for oil removal from produced water.

ACS Style

Dina Ewis; Abdelbaki Benamor; Muneer M. Ba-Abbad; Mustafa Nasser; Muftah El-Naas; Hazim Qiblawey. Removal of Oil Content from Oil-Water Emulsions Using Iron Oxide/Bentonite Nano Adsorbents. Journal of Water Process Engineering 2020, 38, 101583 .

AMA Style

Dina Ewis, Abdelbaki Benamor, Muneer M. Ba-Abbad, Mustafa Nasser, Muftah El-Naas, Hazim Qiblawey. Removal of Oil Content from Oil-Water Emulsions Using Iron Oxide/Bentonite Nano Adsorbents. Journal of Water Process Engineering. 2020; 38 ():101583.

Chicago/Turabian Style

Dina Ewis; Abdelbaki Benamor; Muneer M. Ba-Abbad; Mustafa Nasser; Muftah El-Naas; Hazim Qiblawey. 2020. "Removal of Oil Content from Oil-Water Emulsions Using Iron Oxide/Bentonite Nano Adsorbents." Journal of Water Process Engineering 38, no. : 101583.

Review
Published: 27 July 2020 in Water
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Gas-to-liquid (GTL) technology involves the conversion of natural gas into several liquid hydrocarbon products. The Fischer–Tropsch (F–T) process is the most widely applied approach for GTL, and it is the main source of wastewater in the GTL process. The wastewater is generally characterized by high chemical oxygen demand (COD) and total organic carbon (TOC) content due to the presence of alcohol, ketones and organic acids. The discharge of this highly contaminated wastewater without prior treatment can cause adverse effects on human life and aquatic systems. This review examines aerobic and anaerobic biological treatment methods that have been shown to reduce the concentration of COD and organic compounds in wastewater. Advanced biological treatment methods, such as cell immobilization and application of nanotechnology are also evaluated. The removal of alcohol and volatile fatty acids (VFA) from GTL wastewater can be achieved successfully under anaerobic conditions. However, the combination of anaerobic systems with aerobic biodegradation processes or chemical treatment processes can be a viable technology for the treatment of highly contaminated GTL wastewater with high COD concentration. The ultimate goal is to have treated wastewater that has good enough quality to be reused in the GTL process, which could lead to cost reduction and environmental benefits.

ACS Style

Riham Surkatti; Muftah H. El-Naas; Mark C. M. Van Loosdrecht; Abdelbaki Benamor; Fatima Al-Naemi; Udeogu Onwusogh. Biotechnology for Gas-to-Liquid (GTL) Wastewater Treatment: A Review. Water 2020, 12, 2126 .

AMA Style

Riham Surkatti, Muftah H. El-Naas, Mark C. M. Van Loosdrecht, Abdelbaki Benamor, Fatima Al-Naemi, Udeogu Onwusogh. Biotechnology for Gas-to-Liquid (GTL) Wastewater Treatment: A Review. Water. 2020; 12 (8):2126.

Chicago/Turabian Style

Riham Surkatti; Muftah H. El-Naas; Mark C. M. Van Loosdrecht; Abdelbaki Benamor; Fatima Al-Naemi; Udeogu Onwusogh. 2020. "Biotechnology for Gas-to-Liquid (GTL) Wastewater Treatment: A Review." Water 12, no. 8: 2126.

Paper
Published: 07 July 2020 in Green Chemistry
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Edge-carboxylated graphene (ECG) crumpled nanosheets with tuneable COOH content were synthesized by a facile one pot approach for selective hydrolysis of cellulose to glucose and eucalyptus to xylose and glucose under ambient conditions.

ACS Style

Hassan Idris Abdu; Kamel Eid; Aboubakr M. Abdullah; Mostafa H. Sliem; Ahmed Elzatahry; Xiaoquan Lu. Dry ice-mediated rational synthesis of edge-carboxylated crumpled graphene nanosheets for selective and prompt hydrolysis of cellulose and eucalyptus lignocellulose under ambient reaction conditions. Green Chemistry 2020, 22, 5437 -5446.

AMA Style

Hassan Idris Abdu, Kamel Eid, Aboubakr M. Abdullah, Mostafa H. Sliem, Ahmed Elzatahry, Xiaoquan Lu. Dry ice-mediated rational synthesis of edge-carboxylated crumpled graphene nanosheets for selective and prompt hydrolysis of cellulose and eucalyptus lignocellulose under ambient reaction conditions. Green Chemistry. 2020; 22 (16):5437-5446.

Chicago/Turabian Style

Hassan Idris Abdu; Kamel Eid; Aboubakr M. Abdullah; Mostafa H. Sliem; Ahmed Elzatahry; Xiaoquan Lu. 2020. "Dry ice-mediated rational synthesis of edge-carboxylated crumpled graphene nanosheets for selective and prompt hydrolysis of cellulose and eucalyptus lignocellulose under ambient reaction conditions." Green Chemistry 22, no. 16: 5437-5446.

Journal article
Published: 25 June 2020 in International Journal of Chemical Reactor Engineering
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A novel system for contacting gases and liquids, suitable for many applications involving gas–liquid contact such as CO2 capture and brine desalination, has been simulated and experimentally validated. The system comprises a vertical vessel with gas and liquid ports and inert particles that enhance mixing and provide a high gas–liquid interfacial area. A low gas flow rate was statistically demonstrated and experimentally verified to be the optimum condition for CO2 capture and brine desalination; however, the gas velocity can have a considerable effect on the motion of inert particles inside the reactor. Uniform particles motion ensures good mixing within the reactor and hence efficient absorption and stripping process. A computational fluid dynamics (CFD) model, namely Eulerian model, presented in this paper, will help demonstrate the effect of mixing particles at specific conditions on the gas and liquid velocities inside the reactor, gas and liquid volume distribution through reactor, and eddy viscosities stresses of the mixing particles. A mesh-independent study was conducted to demonstrate the independency of mesh structure and size on the output responses. A quasi-steady state was attained to ensure the stability and feasibility of the selected model. The assembled model exhibits remarkable applicability in determining the optimum mixing particles densities, volume ratios, and sizes to ensure best velocity distribution and gas spreading inside the reactor and accordingly enhance the associated chemical reactions.

ACS Style

Ameera F. Mohammad; Aya A-H. I. Mourad; Jawad Mustafa; Ali H. Al-Marzouqi; Muftah El-Naas; Mohamed Al-Marzouqi; Fadi Alnaimat; Mabruk I. Suleiman; Mohamed Al Musharfy; Tommy Firmansyah. Computational fluid dynamics simulation of an Inert Particles Spouted Bed Reactor (IPSBR) system. International Journal of Chemical Reactor Engineering 2020, 1 .

AMA Style

Ameera F. Mohammad, Aya A-H. I. Mourad, Jawad Mustafa, Ali H. Al-Marzouqi, Muftah El-Naas, Mohamed Al-Marzouqi, Fadi Alnaimat, Mabruk I. Suleiman, Mohamed Al Musharfy, Tommy Firmansyah. Computational fluid dynamics simulation of an Inert Particles Spouted Bed Reactor (IPSBR) system. International Journal of Chemical Reactor Engineering. 2020; ():1.

Chicago/Turabian Style

Ameera F. Mohammad; Aya A-H. I. Mourad; Jawad Mustafa; Ali H. Al-Marzouqi; Muftah El-Naas; Mohamed Al-Marzouqi; Fadi Alnaimat; Mabruk I. Suleiman; Mohamed Al Musharfy; Tommy Firmansyah. 2020. "Computational fluid dynamics simulation of an Inert Particles Spouted Bed Reactor (IPSBR) system." International Journal of Chemical Reactor Engineering , no. : 1.

Journal article
Published: 20 June 2020 in International Journal of Energy Research
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Nafis Mahmud; Abdelbaki Benamor; Mustafa S. Nasser; Muneer M. Ba‐Abbad; Muftah El-Naas; Hazim Qiblawey. Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine. International Journal of Energy Research 2020, 44, 12506 -12524.

AMA Style

Nafis Mahmud, Abdelbaki Benamor, Mustafa S. Nasser, Muneer M. Ba‐Abbad, Muftah El-Naas, Hazim Qiblawey. Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine. International Journal of Energy Research. 2020; 44 (15):12506-12524.

Chicago/Turabian Style

Nafis Mahmud; Abdelbaki Benamor; Mustafa S. Nasser; Muneer M. Ba‐Abbad; Muftah El-Naas; Hazim Qiblawey. 2020. "Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine." International Journal of Energy Research 44, no. 15: 12506-12524.

Research article
Published: 15 June 2020 in ACS Applied Materials & Interfaces
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Multidimensional bimetallic Pt-based nanoarchitectonics are highly promising in electrochemical energy conversion technologies because of their fancy structural merits and accessible active sites; however, hitherto their precise template-free fabrication remains a great challenge. We report a template-free solvothermal one-pot approach for the rational design of cocentric PtNi multicube nanoarchitectonics via adjusting the oleylamine/oleic acid ratio with curcumin. The obtained multidimensional PtNi multicubes comprise multiple small interlace-stacked nanocube subunits assembled in spatially porous branched nanoarchitectonics and bound by high-index facets. The synthetic mechanism is driven by spontaneous isolation among prompt nucleation and oriented attachment epitaxial growth. These inimitable architectural and compositional merits of PtNi multicubes endowed the ethanol oxidation mass and specific activity by 5.6 and 9.03 times than the Pt/C catalyst, respectively, along with the enhancement of methanol oxidation mass activity by 2.3 times. Moreover, PtNi multicubes showed superior durability and a higher tolerance for CO poisoning than the Pt/C catalyst. This work may pave the way for tailored preparation of Pt-based nanoarchitectonics for myriad catalytic reactions.

ACS Style

Fengxia Wu; Kamel Eid; Aboubakr Moustafa Abdullah; Wenxin Niu; Chao Wang; Yixiang Lan; Ahmed A. Elzatahry; Guobao Xu. Unveiling One-Pot Template-Free Fabrication of Exquisite Multidimensional PtNi Multicube Nanoarchitectonics for the Efficient Electrochemical Oxidation of Ethanol and Methanol with a Great Tolerance for CO. ACS Applied Materials & Interfaces 2020, 12, 31309 -31318.

AMA Style

Fengxia Wu, Kamel Eid, Aboubakr Moustafa Abdullah, Wenxin Niu, Chao Wang, Yixiang Lan, Ahmed A. Elzatahry, Guobao Xu. Unveiling One-Pot Template-Free Fabrication of Exquisite Multidimensional PtNi Multicube Nanoarchitectonics for the Efficient Electrochemical Oxidation of Ethanol and Methanol with a Great Tolerance for CO. ACS Applied Materials & Interfaces. 2020; 12 (28):31309-31318.

Chicago/Turabian Style

Fengxia Wu; Kamel Eid; Aboubakr Moustafa Abdullah; Wenxin Niu; Chao Wang; Yixiang Lan; Ahmed A. Elzatahry; Guobao Xu. 2020. "Unveiling One-Pot Template-Free Fabrication of Exquisite Multidimensional PtNi Multicube Nanoarchitectonics for the Efficient Electrochemical Oxidation of Ethanol and Methanol with a Great Tolerance for CO." ACS Applied Materials & Interfaces 12, no. 28: 31309-31318.

Review
Published: 29 May 2020 in Journal of Natural Gas Science and Engineering
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Gas influx from reservoir into the wellbore during drilling, tripping, or other operations, is a hazard. In the early stages, the influx may be nearly undetectable, but the kick can rapidly change from a seemingly steady condition to one of extremely high flow rate. The resulting uncontrolled release of large amounts of gas on the drilling rig can ignite and explode; causing loss of life, loss of asset, and contamination of environment. A kick perturbs the system; analysis of the resulting transient flow could lead to significant improvement in timely detection of a kick. Timely detection is essential to avoid blowouts. Early detection also allows better characterization of potential blowout, allowing improved response and mitigation efforts. Early gas-kick prediction and analysis through dynamic multiphase flow can lead to significant progress in detection and controlling of High Pressure High Temperature (HPHT) drilling of deep wells, which is vital to prevent gas blowout risk. This review paper aims to provide the current state-of-the-art on the early gas-kick simulation models based on transient multiphase flow to determine the bottom hole pressure and gas kick size and to employ appropriate mitigation plans. A comprehensive literature review on early kick detection showed that the transient one-dimensional two-phase models are prominently researched considering some aspects of heat transfer, gas solubility and homogenous flows. The reported transient two-phase (G-L) flow models are found to be limited to 1-D flow with limited range of operating conditions. Future studies towards more sophisticated 2-D and 3-D simulations of transient multiphase (G-L) flow models using computational fluid dynamics (CFD) tools are recommended. 2-D and 3-D flow simulations using advanced turbulence models can potentially enhance the accuracy in the calculations of phase velocity, temperature and pressure patterns within the annuli of wellbore and can advance the early gas-kick detection process.

ACS Style

Ahmad K. Sleiti; Gorakshnath Takalkar; Muftah El-Naas; Abu Rashid Hasan; Mohammad Rahman. Early gas kick detection in vertical wells via transient multiphase flow modelling: A review. Journal of Natural Gas Science and Engineering 2020, 80, 103391 .

AMA Style

Ahmad K. Sleiti, Gorakshnath Takalkar, Muftah El-Naas, Abu Rashid Hasan, Mohammad Rahman. Early gas kick detection in vertical wells via transient multiphase flow modelling: A review. Journal of Natural Gas Science and Engineering. 2020; 80 ():103391.

Chicago/Turabian Style

Ahmad K. Sleiti; Gorakshnath Takalkar; Muftah El-Naas; Abu Rashid Hasan; Mohammad Rahman. 2020. "Early gas kick detection in vertical wells via transient multiphase flow modelling: A review." Journal of Natural Gas Science and Engineering 80, no. : 103391.

Journal article
Published: 27 May 2020 in Metals
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The effect of temperature, time and rotation speed of FT-GTL process water on the corrosion rate of API X-120 carbon steel was investigated. Electrochemical impedance spectroscopy and potentiodynamic polarization techniques were used to determine the carbon steel corrosion rate under temperatures ranging from 293 to 323 K and rotation speed of 0, 500, 1000, 2000 rpm when the immersion time was 0.5, 1, and 2 h. The corrosion rate increased with temperature and rotation speed but decreased with immersion time. SEM, XRD, and XPS analyses of the corroded surfaces confirmed the formation of iron oxide and ferric oxide as the main components of the protective layer.

ACS Style

Dina Ewis; Ahmed Gomaa Gomaa Talkhan; Abdelbaki Benamor; Hazim Qiblawey; Mustafa Nasser; Muneer M. M. Ba-Abbad; Muftah El-Naas. Corrosion Behavior of API-X120 Carbon Steel Alloy in a GTL F-T Process Water Environment at Low COD Concentration. Metals 2020, 10, 707 .

AMA Style

Dina Ewis, Ahmed Gomaa Gomaa Talkhan, Abdelbaki Benamor, Hazim Qiblawey, Mustafa Nasser, Muneer M. M. Ba-Abbad, Muftah El-Naas. Corrosion Behavior of API-X120 Carbon Steel Alloy in a GTL F-T Process Water Environment at Low COD Concentration. Metals. 2020; 10 (6):707.

Chicago/Turabian Style

Dina Ewis; Ahmed Gomaa Gomaa Talkhan; Abdelbaki Benamor; Hazim Qiblawey; Mustafa Nasser; Muneer M. M. Ba-Abbad; Muftah El-Naas. 2020. "Corrosion Behavior of API-X120 Carbon Steel Alloy in a GTL F-T Process Water Environment at Low COD Concentration." Metals 10, no. 6: 707.

Journal article
Published: 13 May 2020 in Water
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The treatment of tannery effluent is of great interest as it contains a complex mixture of pollutants, primarily chromium. The disposal of this wastewater can have adverse effects on the environment and aquatic life, which is an emerging problem for the environment. In this work, electrocoagulation is used to remove chromium from real tannery wastewater, focusing on performance optimization and sludge characterization. Electrocoagulation experiments were conducted using an electrochemical cell with iron electrodes immersed in a specific volume of tannery wastewater. Operating parameters, such as the initial chromium concentration, pH and current density as well as power consumption were evaluated to determine optimum chromium removal. The optimization was performed using Response Surface Methodology combined with central composite design. Analysis of variance (ANOVA) was used to determine the response, residual, probability, 3D surface and contour plots. The maximum chromium removal was 100% at the optimum values of 13 mA/cm2, 7 and 750 ppm for current density, pH and concentration, respectively.

ACS Style

Nahid M. Genawi; Mohamed H. Ibrahim; Muftah H. El-Naas; Awad E. Alshaik. Chromium Removal from Tannery Wastewater by Electrocoagulation: Optimization and Sludge Characterization. Water 2020, 12, 1374 .

AMA Style

Nahid M. Genawi, Mohamed H. Ibrahim, Muftah H. El-Naas, Awad E. Alshaik. Chromium Removal from Tannery Wastewater by Electrocoagulation: Optimization and Sludge Characterization. Water. 2020; 12 (5):1374.

Chicago/Turabian Style

Nahid M. Genawi; Mohamed H. Ibrahim; Muftah H. El-Naas; Awad E. Alshaik. 2020. "Chromium Removal from Tannery Wastewater by Electrocoagulation: Optimization and Sludge Characterization." Water 12, no. 5: 1374.