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Prof. Dr. Taleb H. Ibrahim
American University of Sharjah, UAE

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0 Corrosion Inhibitors
0 Wastewater Treatment
0 nanomaterials for energy and environment
0 Colloid and Interface Science
0 Materials Science

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Journal article
Published: 22 April 2021 in Molecules
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While several group contribution method (GCM) models have been developed in recent years for the prediction of ionic liquid (IL) properties, some challenges exist in their effective application. Firstly, the models have been developed and tested based on different datasets; therefore, direct comparison based on reported statistical measures is not reliable. Secondly, many of the existing models are limited in the range of ILs for which they can be used due to the lack of functional group parameters. In this paper, we examine two of the most diverse GCMs for the estimation of IL melting point; a key property in the selection and design of ILs for materials and energy applications. A comprehensive database consisting of over 1300 data points for 933 unique ILs, has been compiled and used to critically evaluate the two GCMs. One of the GCMs has been refined by introducing new functional groups and reparametrized to give improved performance for melting point estimation over a wider range of ILs. This work will aid in the targeted design of ILs for materials and energy applications.

ACS Style

Dhruve Mital; Paul Nancarrow; Samira Zeinab; Nabil Jabbar; Taleb Ibrahim; Mustafa Khamis; Alnoman Taha. Group Contribution Estimation of Ionic Liquid Melting Points: Critical Evaluation and Refinement of Existing Models. Molecules 2021, 26, 2454 .

AMA Style

Dhruve Mital, Paul Nancarrow, Samira Zeinab, Nabil Jabbar, Taleb Ibrahim, Mustafa Khamis, Alnoman Taha. Group Contribution Estimation of Ionic Liquid Melting Points: Critical Evaluation and Refinement of Existing Models. Molecules. 2021; 26 (9):2454.

Chicago/Turabian Style

Dhruve Mital; Paul Nancarrow; Samira Zeinab; Nabil Jabbar; Taleb Ibrahim; Mustafa Khamis; Alnoman Taha. 2021. "Group Contribution Estimation of Ionic Liquid Melting Points: Critical Evaluation and Refinement of Existing Models." Molecules 26, no. 9: 2454.

Review article
Published: 29 March 2021 in RSC Advances
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Extraction of phenol from aqueous phase to ionic liquid phase.

ACS Style

Amir Sada Khan; Taleb H. Ibrahim; Nabil Abdel Jabbar; Mustafa I. Khamis; Paul Nancarrow; Farouq Sabri Mjalli. Ionic liquids and deep eutectic solvents for the recovery of phenolic compounds: effect of ionic liquids structure and process parameters. RSC Advances 2021, 11, 12398 -12422.

AMA Style

Amir Sada Khan, Taleb H. Ibrahim, Nabil Abdel Jabbar, Mustafa I. Khamis, Paul Nancarrow, Farouq Sabri Mjalli. Ionic liquids and deep eutectic solvents for the recovery of phenolic compounds: effect of ionic liquids structure and process parameters. RSC Advances. 2021; 11 (20):12398-12422.

Chicago/Turabian Style

Amir Sada Khan; Taleb H. Ibrahim; Nabil Abdel Jabbar; Mustafa I. Khamis; Paul Nancarrow; Farouq Sabri Mjalli. 2021. "Ionic liquids and deep eutectic solvents for the recovery of phenolic compounds: effect of ionic liquids structure and process parameters." RSC Advances 11, no. 20: 12398-12422.

Research article
Published: 21 February 2021 in Environmental Science and Pollution Research
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Cut flowers and floral waste (CFW) is a major concern in the present era. This study emphasizes the reuse of cut flowers as a neat bioadsorbent and activated carbon (AC). The biomass from the cut flowers was utilized as a neat bioadsorbent for the removal of the antibiotic levofloxacin and lead ions from water. The results revealed that the neat bioadsorbent was able to remove 60% levofloxacin and 45% of lead ions. Upon chemical activation of the CFW (using KOH), almost all levofloxacin and more than 99% of lead ions were removed. Physical activation (using CO2) gave a material that removed 90% of levofloxacin and 85% of lead ions. The adsorption of levofloxacin and lead ions on all the adsorbents followed Langmuir isotherms and pseudo-second-order kinetic model. The results have been further explained via the prediction of interaction energies between the adsorbates and adsorbents using COSMO-RS simulation.

ACS Style

Muhammad Ashraf Sabri; Taleb Hassan Ibrahim; Mustafa Ibrahim Khamis; Adriane Ludwick; Paul Nancarrow. Sustainable management of cut flowers waste by activation and its application in wastewater treatment technology. Environmental Science and Pollution Research 2021, 28, 31803 -31813.

AMA Style

Muhammad Ashraf Sabri, Taleb Hassan Ibrahim, Mustafa Ibrahim Khamis, Adriane Ludwick, Paul Nancarrow. Sustainable management of cut flowers waste by activation and its application in wastewater treatment technology. Environmental Science and Pollution Research. 2021; 28 (24):31803-31813.

Chicago/Turabian Style

Muhammad Ashraf Sabri; Taleb Hassan Ibrahim; Mustafa Ibrahim Khamis; Adriane Ludwick; Paul Nancarrow. 2021. "Sustainable management of cut flowers waste by activation and its application in wastewater treatment technology." Environmental Science and Pollution Research 28, no. 24: 31803-31813.

Review article
Published: 21 January 2021 in Journal of Molecular Liquids
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Due to the superior thermophysical properties and tunable nature of ionic liquids (ILs), these materials are considered as potential alternative for the removal of phenolic compounds by separation. COSMO-RS (Conductor like Screening Model for Real Solvent) based screening was used to select efficient ILs for the removal of phenolic compounds using liquid-liquid phase extraction (LLE). For this purpose, a combination of 40 cation (involving imidazolium, pyridinium, pyrrolidinium, ammonium and phosphonium) and 20 different anions in 800 possible combinations were screened via COSMO-RS to predict their selectivity and capacity at infinite dilution for phenolic compounds removal. From the simulation results, it can be concluded that anions, cation, alkyl chain length and functional group on the cation have significant effects on the binding of phenolic compounds to ILs. Based on the COSMO-RS screening results, some general guideline on the proper selection of ILs for phenolic compound extraction from aqueous solution are proposed and discussed.

ACS Style

Amir Sada Khan; Taleb Hassan Ibrahim; Zeeshan Rashid; Mustafa I. Khamis; Paul Nancarrow; Nabil Abdel Jabbar. COSMO-RS based screening of ionic liquids for extraction of phenolic compounds from aqueous media. Journal of Molecular Liquids 2021, 328, 115387 .

AMA Style

Amir Sada Khan, Taleb Hassan Ibrahim, Zeeshan Rashid, Mustafa I. Khamis, Paul Nancarrow, Nabil Abdel Jabbar. COSMO-RS based screening of ionic liquids for extraction of phenolic compounds from aqueous media. Journal of Molecular Liquids. 2021; 328 ():115387.

Chicago/Turabian Style

Amir Sada Khan; Taleb Hassan Ibrahim; Zeeshan Rashid; Mustafa I. Khamis; Paul Nancarrow; Nabil Abdel Jabbar. 2021. "COSMO-RS based screening of ionic liquids for extraction of phenolic compounds from aqueous media." Journal of Molecular Liquids 328, no. : 115387.

Journal article
Published: 18 January 2021 in Sustainability
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Two novel nitrogen-rich aminal linked porous organic polymers, NRAPOP-O and NRAPOP-S, have been prepared using a single step-one pot Schiff-base condensation reaction of 9,10-bis-(4,6-diamino-S-triazin-2-yl)benzene and 2-furaldehyde or 2-thiophenecarboxaldehyde, respectively. The two polymers show excellent thermal and physiochemical stabilities and possess high porosity with Brunauer–Emmett–Teller (BET) surface areas of 692 and 803 m2 g−1 for NRAPOP-O and NRAPOP-S, respectively. Because of such porosity, attractive chemical and physical properties, and the availability of redox-active sites and physical environment, the NRAPOPs were able to effectively remove Cr(VI) from solution, reduce it to Cr(III), and simultaneously release it into the solution. The efficiency of the adsorption process was assessed under various influencing factors such as pH, contact time, polymer dosage, and initial concentration of Cr(VI). At the optimum conditions, 100% removal of Cr(VI) was achieved, with simultaneous reduction and release of Cr(III) by NRAPOP-O with 80% efficiency. Moreover, the polymers can be easily regenerated by the addition of reducing agents such as hydrazine without significant loss in the detoxication of Cr(VI).

ACS Style

Muhammad Sabri; Ziad Sara; Mohammad Al-Sayah; Taleb Ibrahim; Mustafa Khamis; Oussama El-Kadri. Simultaneous Adsorption and Reduction of Cr(VI) to Cr(III) in Aqueous Solution Using Nitrogen-Rich Aminal Linked Porous Organic Polymers. Sustainability 2021, 13, 923 .

AMA Style

Muhammad Sabri, Ziad Sara, Mohammad Al-Sayah, Taleb Ibrahim, Mustafa Khamis, Oussama El-Kadri. Simultaneous Adsorption and Reduction of Cr(VI) to Cr(III) in Aqueous Solution Using Nitrogen-Rich Aminal Linked Porous Organic Polymers. Sustainability. 2021; 13 (2):923.

Chicago/Turabian Style

Muhammad Sabri; Ziad Sara; Mohammad Al-Sayah; Taleb Ibrahim; Mustafa Khamis; Oussama El-Kadri. 2021. "Simultaneous Adsorption and Reduction of Cr(VI) to Cr(III) in Aqueous Solution Using Nitrogen-Rich Aminal Linked Porous Organic Polymers." Sustainability 13, no. 2: 923.

Journal article
Published: 09 January 2021 in Journal of Molecular Liquids
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In this study, the extraction behavior of several ionic liquids (ILs) containing the same anion, bis-(trifluoromethylsulfonyl)imide ([NTf2]) and a range of cations with different alkyl chain length are compared for the removal of phenol from aqueous solution. The [NTf2]− anion was selected due to its hydrophobic nature and low viscosity, which can contribute positively to mass transfer and to the removal efficiency of phenol, in combination with a range of imidazolium, pyrrolidinium and ammonium based cations. To study the effect of alkyl chain length on the extraction of phenol, the alkyl chain length attached to the imidazolium cation was varied from C2 to C12. The effect of process parameters such as IL to water volume ratio (VIL:Vw), phenol concentration, pH and extraction time were investigated. For a given alkyl chain length, the performance of the ILs followed the order: pyrrolidinium>imidazolium>ammonium. Increasing the alkyl chain length of the imidazolium cation resulted in decreasing removal efficiency of phenol. Around 89% removal of phenol was achieved in 3 min, at pH 2 and volume ratio (VIL: Vwater) of 1:3 at room temperature. The extraction of phenol into the ionic liquid phase was confirmed using Fourier Transform Infrared spectroscopy (FTIR). The interactions of phenol with the various studied ionic liquids were modeled using the Conductor like Screening Model for Real Solvents (COSMO-RS). The experimental results were explained based on hydrophobic-hydrophilic interactions between phenol and the ILs as revealed from the σ profiles.

ACS Style

Amir Sada Khan; Taleb Hassan Ibrahim; Mustafa I. Khamis; Paul Nancarrow; Nabil Abdel Jabbar. Role of cation and alkyl chain length on the extraction of phenol from aqueous solution using NTf2-based ionic liquids: Experimental and computational analysis. Journal of Molecular Liquids 2021, 326, 115305 .

AMA Style

Amir Sada Khan, Taleb Hassan Ibrahim, Mustafa I. Khamis, Paul Nancarrow, Nabil Abdel Jabbar. Role of cation and alkyl chain length on the extraction of phenol from aqueous solution using NTf2-based ionic liquids: Experimental and computational analysis. Journal of Molecular Liquids. 2021; 326 ():115305.

Chicago/Turabian Style

Amir Sada Khan; Taleb Hassan Ibrahim; Mustafa I. Khamis; Paul Nancarrow; Nabil Abdel Jabbar. 2021. "Role of cation and alkyl chain length on the extraction of phenol from aqueous solution using NTf2-based ionic liquids: Experimental and computational analysis." Journal of Molecular Liquids 326, no. : 115305.

Review
Published: 28 September 2020 in Polymers
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Phenol–formaldehyde (PF) resin continues to dominate the resin industry more than 100 years after its first synthesis. Its versatile properties such as thermal stability, chemical resistance, fire resistance, and dimensional stability make it a suitable material for a wide range of applications. PF resins have been used in the wood industry as adhesives, in paints and coatings, and in the aerospace, construction, and building industries as composites and foams. Currently, petroleum is the key source of raw materials used in manufacturing PF resin. However, increasing environmental pollution and fossil fuel depletion have driven industries to seek sustainable alternatives to petroleum based raw materials. Over the past decade, researchers have replaced phenol and formaldehyde with sustainable materials such as lignin, tannin, cardanol, hydroxymethylfurfural, and glyoxal to produce bio-based PF resin. Several synthesis modifications are currently under investigation towards improving the properties of bio-based phenolic resin. This review discusses recent developments in the synthesis of PF resins, particularly those created from sustainable raw material substitutes, and modifications applied to the synthetic route in order to improve the mechanical properties.

ACS Style

P. R. Sarika; Paul Nancarrow; Abdulrahman Khansaheb; Taleb Ibrahim. Bio-Based Alternatives to Phenol and Formaldehyde for the Production of Resins. Polymers 2020, 12, 2237 .

AMA Style

P. R. Sarika, Paul Nancarrow, Abdulrahman Khansaheb, Taleb Ibrahim. Bio-Based Alternatives to Phenol and Formaldehyde for the Production of Resins. Polymers. 2020; 12 (10):2237.

Chicago/Turabian Style

P. R. Sarika; Paul Nancarrow; Abdulrahman Khansaheb; Taleb Ibrahim. 2020. "Bio-Based Alternatives to Phenol and Formaldehyde for the Production of Resins." Polymers 12, no. 10: 2237.

Journal article
Published: 02 September 2020 in Processes
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A previous publication by our group reported that adsorption of Cr(VI) on sheep wool reached 99% when allowed a long residence time, with concurrent reduction to Cr(III). In this study, the process was scaled up by optimizing a pilot plant based on semi-batch adsorption cycles. This yielded Cr(III), which is about 300 times less toxic than Cr(VI), and can be precipitated using lime at high pH. Since the reduction step is slower than the adsorption one, an adsorption column was designed to perform semi-batch operation cycles, whereby the extended “off cycle” allows reduction to take place. Since reduction of Cr(VI) frees active sites on wool, the plant acts in lieu of in situ regeneration, accompanied by additional adsorption of Cr(VI). The results show that 97% of the column efficiency can be recovered within 24 h of “off cycle”. Wastewater from a local electroplating industry was treated by this method with high removal of Cr(VI), reaching the limit permitted by environmental standards. This study also reveals that typical concentrations of heavy metals, present in wastewater produced from electroplating, had no substantial antagonistic interference with Cr(VI) adsorption.

ACS Style

Mohamed Badrelzaman; Mustafa I. Khamis; Taleb H. Ibrahim; Fawwaz H. Jumean. Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool. Processes 2020, 8, 1092 .

AMA Style

Mohamed Badrelzaman, Mustafa I. Khamis, Taleb H. Ibrahim, Fawwaz H. Jumean. Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool. Processes. 2020; 8 (9):1092.

Chicago/Turabian Style

Mohamed Badrelzaman; Mustafa I. Khamis; Taleb H. Ibrahim; Fawwaz H. Jumean. 2020. "Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool." Processes 8, no. 9: 1092.

Journal article
Published: 21 August 2020 in Molecules
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The thermal conductivities of selected deep eutectic solvents (DESs) were determined using the modified transient plane source (MTPS) method over the temperature range from 295 K to 363 K at atmospheric pressure. The results were found to range from 0.198 W·m−1·K−1 to 0.250 W·m−1·K−1. Various empirical and thermodynamic correlations present in literature, including the group contribution method and mixing correlations, were used to model the thermal conductivities of these DES at different temperatures. The predictions of these correlations were compared and consolidated with the reported experimental values. In addition, the thermal conductivities of DES mixtures with water over a wide range of compositions at 298 K and atmospheric pressure were measured. The standard uncertainty in thermal conductivity was estimated to be less than ± 0.001 W·m−1·K−1 and ± 0.05 K in temperature. The results indicated that DES have significant potential for use as heat transfer fluids.

ACS Style

Taleb H. Ibrahim; Muhammad A. Sabri; Nabil Abdel Jabbar; Paul Nancarrow; Farouq S. Mjalli; Inas Alnashef. Thermal Conductivities of Choline Chloride-Based Deep Eutectic Solvents and Their Mixtures with Water: Measurement and Estimation. Molecules 2020, 25, 3816 .

AMA Style

Taleb H. Ibrahim, Muhammad A. Sabri, Nabil Abdel Jabbar, Paul Nancarrow, Farouq S. Mjalli, Inas Alnashef. Thermal Conductivities of Choline Chloride-Based Deep Eutectic Solvents and Their Mixtures with Water: Measurement and Estimation. Molecules. 2020; 25 (17):3816.

Chicago/Turabian Style

Taleb H. Ibrahim; Muhammad A. Sabri; Nabil Abdel Jabbar; Paul Nancarrow; Farouq S. Mjalli; Inas Alnashef. 2020. "Thermal Conductivities of Choline Chloride-Based Deep Eutectic Solvents and Their Mixtures with Water: Measurement and Estimation." Molecules 25, no. 17: 3816.

Original paper
Published: 24 June 2020 in International Journal of Environmental Science and Technology
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Chemically and physically activated carbon fibers (ACFs) were produced using PAN (polyacrylonitrile) fibers and their properties were compared with commercial samples. Chemical activation using 3:1 KOH (ww−1) yielded fibers with 2885 m2 g−1 surface area, whereas fibers produced via physical activation with carbon dioxide had an area of only 774 m2 g−1. The surface area of the commercial sample was found to be 1500 m2 g−1. Notably, the total volume of pores, Vt, was 2.39 and 0.633 cm3 g−1 for synthetic (Syn-ACFs) and commercial (C-ACFs). The two fiber types were investigated for p-cresol removal and for treatment of emulsified oil in produced water. At a challenge contaminant concentration of 350 mg L−1 (p-cresol) and 150 mg L−1 (emulsified oil), adsorption studies of p-cresol on Syn-ACFs and C-ACFs at 25 °C gave 91.0 and 71.6% removal efficiencies, respectively. Adsorption of emulsified oil on synthetic ACFs resulted in a removal efficiency of ca. 97%. Adsorption of p-cresol on synthetic and commercial ACFs followed the Langmuir isotherm, with monolayer saturation (qm) values of 500 and 294 mg g−1, respectively. Single cycle regeneration efficiencies by ethanol and n-hexane were 63.8 and 73.6%, respectively. Thermal regeneration at 600 °C was most effective, with an efficiency of 83.9%.

ACS Style

D. S. S. Alkathiri; M. A. Sabri; T. H. Ibrahim; Y. A. Elsayed; F. Jumean. Development of activated carbon fibers for removal of organic contaminants. International Journal of Environmental Science and Technology 2020, 17, 4841 -4852.

AMA Style

D. S. S. Alkathiri, M. A. Sabri, T. H. Ibrahim, Y. A. Elsayed, F. Jumean. Development of activated carbon fibers for removal of organic contaminants. International Journal of Environmental Science and Technology. 2020; 17 (12):4841-4852.

Chicago/Turabian Style

D. S. S. Alkathiri; M. A. Sabri; T. H. Ibrahim; Y. A. Elsayed; F. Jumean. 2020. "Development of activated carbon fibers for removal of organic contaminants." International Journal of Environmental Science and Technology 17, no. 12: 4841-4852.

Journal article
Published: 04 June 2020 in Environmental Nanotechnology, Monitoring & Management
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In this work, multiwall carbon nanotubes (MWCNTs) were chemically modified to yield products that speciate and selectively remove trivalent chromium (Cr(III)) and hexavalent chromium (Cr(VI)) from wastewater. The surface of MWCNTs were modified with cationic surfactant cetyl trimethyl ammonium bromide (CTAB), and yielded a product (MWCNTs-CTAB) that can remove Cr(VI) with 98% efficiency at optimum conditions. Surface modification with anionic surfactant sodium lauryl sulfate (SLS) after magnetization with magnetite (M) yielded a product (MWCNTs-M-SLS) that can remove Cr(III) with 99% efficiency at optimum conditions. Removal of Cr(III) by MWCNTs-M-SLS and Cr(VI) by MWCNTs-CTAB best fitted to Langmuir isotherm model with an adsorption capacity of 66.2 and 27.8 mg/g, respectively. Adsorption kinetics for removal of Cr(III) by MWCNTs-M-SLS and Cr(VI) by MWCNTs-CTAB, demonstrated that adsorption is very fast (< 5 min). Thermodynamic studies indicated that adsorption of Cr(VI) by MWCNTs-CTAB is an endothermic process with enthalpy, entropy and free energy of adsorption of 14.1 KJ/mol, 51.6 J/mol.K and -1.30 KJ/mol, respectively. Adsorption-desorption study of chromium from impregnated MWCNTs-CTAB was performed at different temperatures. At 25 °C, removal efficiency dropped from 98% to 73% to 60%, and at 35 °C, removal efficiency dropped from 98% to 75% to 61%, indicating that temperature did not have a significant effect on the regeneration process. Results indicate that a sequential plant can be designed and engineered for simultaneous speciation and removal of both ions from wastewater.

ACS Style

Tamara Dokmaji; Taleb Ibrahim; Mustafa Khamis; Mohamed Abouleish; Isra Arshad Alam. Chemically modified nanoparticles usage for removal of chromium from sewer water. Environmental Nanotechnology, Monitoring & Management 2020, 14, 100319 .

AMA Style

Tamara Dokmaji, Taleb Ibrahim, Mustafa Khamis, Mohamed Abouleish, Isra Arshad Alam. Chemically modified nanoparticles usage for removal of chromium from sewer water. Environmental Nanotechnology, Monitoring & Management. 2020; 14 ():100319.

Chicago/Turabian Style

Tamara Dokmaji; Taleb Ibrahim; Mustafa Khamis; Mohamed Abouleish; Isra Arshad Alam. 2020. "Chemically modified nanoparticles usage for removal of chromium from sewer water." Environmental Nanotechnology, Monitoring & Management 14, no. : 100319.

Journal article
Published: 09 May 2020 in Processes
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Alizarin red S (ARS) removal from wastewater using sheep wool as adsorbent was investigated. The influence of contact time, pH, adsorbent dosage, initial ARS concentration and temperature was studied. Optimum values were: pH = 2.0, contact time = 90 min, adsorbent dosage = 8.0 g/L. Removal of ARS under these conditions was 93.2%. Adsorption data at 25.0 °C and 90 min contact time were fitted to the Freundlich and Langmuir isotherms. R2 values were 0.9943 and 0.9662, respectively. Raising the temperature to 50.0 °C had no effect on ARS removal. Free wool and wool loaded with ARS were characterized by Fourier Transform Infrared Spectroscopy (FTIR). ARS loaded wool was used as adsorbent for removal of Cr(VI) from industrial wastewater. ARS adsorbed on wool underwent oxidation, accompanied by a simultaneous reduction of Cr(VI) to Cr(III). The results hold promise for wool as adsorbent of organic pollutants from wastewater, in addition to substantial self-regeneration through reduction of toxic Cr(VI) to Cr(III). Sequential batch reactor studies involving three cycles showed no significant decline in removal efficiencies of both chromium and ARS.

ACS Style

Mustafa I. Khamis; Taleb H. Ibrahim; Fawwaz H. Jumean; Ziad A. Sara; Baraa A. Atallah. Cyclic Sequential Removal of Alizarin Red S Dye and Cr(VI) Ions Using Wool as a Low-Cost Adsorbent. Processes 2020, 8, 556 .

AMA Style

Mustafa I. Khamis, Taleb H. Ibrahim, Fawwaz H. Jumean, Ziad A. Sara, Baraa A. Atallah. Cyclic Sequential Removal of Alizarin Red S Dye and Cr(VI) Ions Using Wool as a Low-Cost Adsorbent. Processes. 2020; 8 (5):556.

Chicago/Turabian Style

Mustafa I. Khamis; Taleb H. Ibrahim; Fawwaz H. Jumean; Ziad A. Sara; Baraa A. Atallah. 2020. "Cyclic Sequential Removal of Alizarin Red S Dye and Cr(VI) Ions Using Wool as a Low-Cost Adsorbent." Processes 8, no. 5: 556.

Journal article
Published: 01 September 2018 in Journal of Industrial and Engineering Chemistry
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Two hydrophobic room temperature ionic liquid (IL), tetrahexylammonium dihexyl-sulfosuccinate (IL1) and trioctylmethylammonium salicylate (IL2), have been employed for the treatment of spent caustic (SC) wastewater by liquid-liquid extraction at room temperature and pressure. The concentrations of phenols, thiols and benzaldehyde were reduced to below their detection limits and the chemical oxygen demand (COD) levels were reduced from 64166 ± 3880 mg/L to 63.0 ± 9.0 mg/L. This represents an outstanding reduction in pollutant and COD levels to well below the discharge limits for industrial effluents as set by U.S.A Environmental Protection Agency (EPA) regulations, thus eliminating the need for any further treatment before discharge.

ACS Style

Muhammad Ashraf Sabri; Taleb Hassan Ibrahim; Mustafa Ibrahim Khamis; Paul Nancarrow; Muhammad Faheem Hassan. Spent caustic treatment using hydrophobic room temperatures ionic liquids. Journal of Industrial and Engineering Chemistry 2018, 65, 325 -333.

AMA Style

Muhammad Ashraf Sabri, Taleb Hassan Ibrahim, Mustafa Ibrahim Khamis, Paul Nancarrow, Muhammad Faheem Hassan. Spent caustic treatment using hydrophobic room temperatures ionic liquids. Journal of Industrial and Engineering Chemistry. 2018; 65 ():325-333.

Chicago/Turabian Style

Muhammad Ashraf Sabri; Taleb Hassan Ibrahim; Mustafa Ibrahim Khamis; Paul Nancarrow; Muhammad Faheem Hassan. 2018. "Spent caustic treatment using hydrophobic room temperatures ionic liquids." Journal of Industrial and Engineering Chemistry 65, no. : 325-333.

Research paper
Published: 16 June 2018 in International Journal of Environmental Research
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The removal of lead ions from aqueous solution by the biosorbent Eucalyptus camaldulensis leaf powder (ECLP) was investigated. The ECLP with and without nitric acid conditioning was characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy and Fourier transformation infrared spectroscopy (FTIR). The FTIR spectra for the sorbents tested in this work revealed lead complexation to functional groups. The effects of biosorbent dosage, contact time, salinity, pH, and temperature on the removal efficiency of lead ion by ECLP were evaluated. The optimal parameters were determined to be 2 g/L of biosorbent dosage, pH 7.0, salinity 500 ppm and equilibrium time of 40 min in case of conditioned ECLP (ECPL-N). The adsorption isotherms of lead ions on ECPL-N was best described by the Freundlich isotherm with Freundlich constants of Af = 23.8 and n = 1.84 at 25 °C. The kinetics of lead ions adsorption on ECPL-N was found to follow pseudo-second-order reaction kinetics with rate constant of 0.02 g/mg.min at 25 °C. It is found that at optimal conditions, ECLP-N was able to reduce lead concentration below 0.1 ppm. The fixed bed column adsorption of lead using ECLP-N was best described by the Yan model. These findings strongly suggest that ECPL-N can be implemented as an efficient alternative to other adsorbents for lead removal.

ACS Style

Muhammad Ashraf Sabri; Taleb Hassan Ibrahim; Mustafa Khamis; Sameer Al-Asheh; Muhammad Faheem Hassan. Use of Eucalyptus camaldulensis as Biosorbent for Lead Removal from Aqueous Solution. International Journal of Environmental Research 2018, 12, 513 -529.

AMA Style

Muhammad Ashraf Sabri, Taleb Hassan Ibrahim, Mustafa Khamis, Sameer Al-Asheh, Muhammad Faheem Hassan. Use of Eucalyptus camaldulensis as Biosorbent for Lead Removal from Aqueous Solution. International Journal of Environmental Research. 2018; 12 (4):513-529.

Chicago/Turabian Style

Muhammad Ashraf Sabri; Taleb Hassan Ibrahim; Mustafa Khamis; Sameer Al-Asheh; Muhammad Faheem Hassan. 2018. "Use of Eucalyptus camaldulensis as Biosorbent for Lead Removal from Aqueous Solution." International Journal of Environmental Research 12, no. 4: 513-529.

Journal article
Published: 10 May 2018 in Environmental Technology
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Multiwalled carbon nanotubes and their magnetite derivatives were employed as adsorbents for emulsified oil removal from produced water. The experimental parameters for maximum emulsified oil removal efficiency and effective regeneration of these adsorbents were determined. The optimum parameters in terms of adsorbent dosage, contact time, salinity, pH and temperature were 3.0 g/L, 20.0 min, 0 ppm, 7.0 and 25°C for both adsorbents. Due to their low density, multiwalledcarbon nanotubes could not be successfully employed in packed bed columns. The magnetite derivative has a larger density and hence, for the removal of emulsified oil from produced water packed bed column studies were performed utilizing multiwalled carbon magnetite nanotubes. The packed bed column efficiency and behavior were evaluated using Thomas, Clark, Yan et al. and Bohart and Adams models. The Yan model was found to best describe the column experimental data. The adsorbents were regenerated using n-hexane and reused several times for oil removal from produced water without any significant decrease in their initial adsorption capacities.

ACS Style

Taleb H. Ibrahim; Muhammad A. Sabri; Mustafa I. Khamis. Application of multiwalled carbon nanotubes and its magnetite derivative for emulsified oil removal from produced water. Environmental Technology 2018, 40, 3337 -3350.

AMA Style

Taleb H. Ibrahim, Muhammad A. Sabri, Mustafa I. Khamis. Application of multiwalled carbon nanotubes and its magnetite derivative for emulsified oil removal from produced water. Environmental Technology. 2018; 40 (25):3337-3350.

Chicago/Turabian Style

Taleb H. Ibrahim; Muhammad A. Sabri; Mustafa I. Khamis. 2018. "Application of multiwalled carbon nanotubes and its magnetite derivative for emulsified oil removal from produced water." Environmental Technology 40, no. 25: 3337-3350.

Journal article
Published: 01 April 2018 in Journal of Environmental Chemical Engineering
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Graphene and its magnetite derivative were used as adsorbents for removal of emulsified oil from produced water. The experimental parameters for maximum emulsified oil removal efficiency and effective regeneration of these adsorbents were determined. The best parameters in terms of dosage, contact time, pH, salinity and temperature were 3.00 g/L, 60.0 minutes, 10.0, 1500 ppm and 25.0 °C for graphene nanoplatelets, and 4.00 g/L, 30.0 minutes, 3.5, 1000 ppm and 25.0 °C, for graphene magnetite, respectively. Packed column studies were carried out utilizing graphene magnetite as adsorbent for the removal of oil from produced water. The packed column operation was assessed using Thomas, Yan et al., Clark, Bohart and Adams and Yoon and Nelson models. Thomas model was found to best describe the column experimental data. The column was regenerated using n-Hexane and reused several times for produced water treatment with negligible decrease in its initial capacity.

ACS Style

Lamis Abou Chacra; Muhammad Ashraf Sabri; Taleb H. Ibrahim; Mustafa Khamis; Nasser Hamdan; Sameer Al-Asheh; Massa AlRefai; Carlos Fernandez. Application of graphene nanoplatelets and graphene magnetite for the removal of emulsified oil from produced water. Journal of Environmental Chemical Engineering 2018, 6, 3018 -3033.

AMA Style

Lamis Abou Chacra, Muhammad Ashraf Sabri, Taleb H. Ibrahim, Mustafa Khamis, Nasser Hamdan, Sameer Al-Asheh, Massa AlRefai, Carlos Fernandez. Application of graphene nanoplatelets and graphene magnetite for the removal of emulsified oil from produced water. Journal of Environmental Chemical Engineering. 2018; 6 (2):3018-3033.

Chicago/Turabian Style

Lamis Abou Chacra; Muhammad Ashraf Sabri; Taleb H. Ibrahim; Mustafa Khamis; Nasser Hamdan; Sameer Al-Asheh; Massa AlRefai; Carlos Fernandez. 2018. "Application of graphene nanoplatelets and graphene magnetite for the removal of emulsified oil from produced water." Journal of Environmental Chemical Engineering 6, no. 2: 3018-3033.

Journal article
Published: 01 January 2018 in Desalination and Water Treatment
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ACS Style

Priyasha Ray; Muhammad Ashraf Sabri; Taleb H. Ibrahim; Mustafa Khamis; Fawwaz H. Jumean. Design and optimization of a batch sequential contactor for the removal of chromium(VI) from industrial wastewater using sheep wool as a low-cost adsorbent. Desalination and Water Treatment 2018, 113, 109 -113.

AMA Style

Priyasha Ray, Muhammad Ashraf Sabri, Taleb H. Ibrahim, Mustafa Khamis, Fawwaz H. Jumean. Design and optimization of a batch sequential contactor for the removal of chromium(VI) from industrial wastewater using sheep wool as a low-cost adsorbent. Desalination and Water Treatment. 2018; 113 ():109-113.

Chicago/Turabian Style

Priyasha Ray; Muhammad Ashraf Sabri; Taleb H. Ibrahim; Mustafa Khamis; Fawwaz H. Jumean. 2018. "Design and optimization of a batch sequential contactor for the removal of chromium(VI) from industrial wastewater using sheep wool as a low-cost adsorbent." Desalination and Water Treatment 113, no. : 109-113.

Articles
Published: 24 April 2017 in Journal of Adhesion Science and Technology
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Various electrochemical techniques were employed to study the effectiveness of aqueous Ficus carica (Fig. tree) leaves extract as green corrosion inhibitor for mild steel under field conditions containing 3.5% sodium chloride solution saturated with carbon dioxide. Optimum inhibition efficiency of 90% was obtained using 50 mg/L of inhibitor in the temperature range of 25–40 °C. The mode of action of Ficus carica leave extract as revealed by Polarization studies was shown to act as a mixed inhibitor. The adsorption isotherm of the adsorption of Ficus carica leaves extract on the steel surface was found to follow Langmuir adsorption isotherm. In order to assess the individual contribution of the different constituents of the extract theoretically, the adsorption of the four major organic constituents of Ficus carica leave extract on mild steel were modelled using density functional theory and quench molecular dynamic simulations. Among the four major Ficus carica leaves extract constituent investigated, Caffeoylmalic acid was found to make the most contribution to the overall inhibition action of Ficus carica leaves extract.

ACS Style

Taleb H. Ibrahim; Elron E. Gomes; Ime Bassey Obot; Mustafa Khamis; Muhammad Ashraf Sabri. Mild steel green inhibition by Ficus carica leaves extract under practical field conditions. Journal of Adhesion Science and Technology 2017, 31, 2697 -2718.

AMA Style

Taleb H. Ibrahim, Elron E. Gomes, Ime Bassey Obot, Mustafa Khamis, Muhammad Ashraf Sabri. Mild steel green inhibition by Ficus carica leaves extract under practical field conditions. Journal of Adhesion Science and Technology. 2017; 31 (24):2697-2718.

Chicago/Turabian Style

Taleb H. Ibrahim; Elron E. Gomes; Ime Bassey Obot; Mustafa Khamis; Muhammad Ashraf Sabri. 2017. "Mild steel green inhibition by Ficus carica leaves extract under practical field conditions." Journal of Adhesion Science and Technology 31, no. 24: 2697-2718.

Journal article
Published: 01 January 2017 in Desalination and Water Treatment
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ACS Style

Malaz M. Suliman; Taleb H. Ibrahim; Fawwaz Jumean; Mustafa I. Khamis; Muhammad A. Sabri. Removal of lead ions from wastewater using multi walled carbon nanotubes modified with sodium lauryl sulfate. Desalination and Water Treatment 2017, 100, 55 -65.

AMA Style

Malaz M. Suliman, Taleb H. Ibrahim, Fawwaz Jumean, Mustafa I. Khamis, Muhammad A. Sabri. Removal of lead ions from wastewater using multi walled carbon nanotubes modified with sodium lauryl sulfate. Desalination and Water Treatment. 2017; 100 ():55-65.

Chicago/Turabian Style

Malaz M. Suliman; Taleb H. Ibrahim; Fawwaz Jumean; Mustafa I. Khamis; Muhammad A. Sabri. 2017. "Removal of lead ions from wastewater using multi walled carbon nanotubes modified with sodium lauryl sulfate." Desalination and Water Treatment 100, no. : 55-65.

Articles
Published: 14 July 2015 in DESALINATION AND WATER TREATMENT
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The removal efficiency of oil from simulated samples of produced water (SPW) was studied using a low-cost adsorbent eggplant peel powder (EPP). The effects of pH, adsorbent dosage, contact time, and temperature on the removal efficiency were investigated. The optimum conditions for maximum removal of oil from produced water (PW) are found to be: pH 10.00, adsorbent dosage = 1.75 g/L, contact time = 40 min, and temperature = 55°C. The results showed that the removal efficiency increases with increasing adsorbent dosage, salinity, and pH. The maximum removal efficiency of oil on EEP, at the optimum condition, is greater than 90% by weight. The study showed that EPP is a fast and excellent adsorbent for this oil removal. The crude oil adsorption on EPP is found to follow Langmuir adsorption isotherm, whereas the adsorption kinetics is best described by Pseudo-second-order kinetic model.

ACS Style

Abdul S. Gulistan; Taleb H. Ibrahim; Mustafa I. Khamis; Yehya Elsayed. Application of eggplant peels powder for the removal of oil from produced water. DESALINATION AND WATER TREATMENT 2015, 57, 15724 -15732.

AMA Style

Abdul S. Gulistan, Taleb H. Ibrahim, Mustafa I. Khamis, Yehya Elsayed. Application of eggplant peels powder for the removal of oil from produced water. DESALINATION AND WATER TREATMENT. 2015; 57 (33):15724-15732.

Chicago/Turabian Style

Abdul S. Gulistan; Taleb H. Ibrahim; Mustafa I. Khamis; Yehya Elsayed. 2015. "Application of eggplant peels powder for the removal of oil from produced water." DESALINATION AND WATER TREATMENT 57, no. 33: 15724-15732.