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Prof. Mustafa Khamis
American University of Sharjah, UAE

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0 Spectroscopy
0 Wastewater Treatment
0 Cryogenic Cooling
0 thermodynamics of sorption processes
0 Novel adsobents

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Spectroscopy

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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.

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: 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: 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 article chemistry
Published: 03 July 2018 in Arabian Journal for Science and Engineering
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In this study, the removal of selected pharmaceuticals including ibuprofen, diclofenac sodium, indomethacin, chlorpheniramine maleate, and paracetamol from water using natural Jordanian zeolite was studied. The influence of pH, contact time, adsorbent dosage, and initial pharmaceutical concentration on the adsorption process was investigated using batch and column methods. The optimal pH for the removal of all selected pharmaceuticals was found to be 2 except for diclofenac sodium where the optimal pH was 6. The optimum adsorption time was found to be 80 min. The percentage removal increased as the initial concentration of the pharmaceuticals increased from 10.0 to 50.0 mg/L except for indomethacin where the removal decreased as the initial concentration increased. After optimization, the highest removal was found to be 88.3, 30.1, 59.0, 85.8, and 12.7% for ibuprofen, diclofenac sodium, indomethacin, chlorpheniraminemaleate, and paracetamol, respectively. Langmuir and Freundlich isotherm models were used to evaluate the adsorption efficiencies of the investigated pharmaceuticals. The results demonstrated that Langmuir isotherm fits the experimental data for diclofenac sodium, indomethacin and paracetamol with adsorption capacity \((Q_{\mathrm{max}})\) of 4.8, 26.6, and 55.6 mg/g, respectively, whereas Freundlich isotherm fits the experimental data for both ibuprofen and chlorpheniramine maleate. Continues flow experiment was performed on ibuprofen under constant influent concentration and fixed flow rate. Equal eluted fractions of 100 mL were collected and analyzed for ibuprofen content. The results indicated that percentage removal of ibuprofen on zeolite was found to be the highest after fraction 9 with 78% removal.

ACS Style

Fuad Al-Rimawi; Mahran Daana; Mustafa Khamis; Rafik Karaman; Hani Khoury; Mohannad Qurie. Removal of Selected Pharmaceuticals from Aqueous Solutions Using Natural Jordanian Zeolite. Arabian Journal for Science and Engineering 2018, 44, 209 -215.

AMA Style

Fuad Al-Rimawi, Mahran Daana, Mustafa Khamis, Rafik Karaman, Hani Khoury, Mohannad Qurie. Removal of Selected Pharmaceuticals from Aqueous Solutions Using Natural Jordanian Zeolite. Arabian Journal for Science and Engineering. 2018; 44 (1):209-215.

Chicago/Turabian Style

Fuad Al-Rimawi; Mahran Daana; Mustafa Khamis; Rafik Karaman; Hani Khoury; Mohannad Qurie. 2018. "Removal of Selected Pharmaceuticals from Aqueous Solutions Using Natural Jordanian Zeolite." Arabian Journal for Science and Engineering 44, no. 1: 209-215.

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

Taleb Hassan Ibrahim; Muhammad Ashraf Sabri; Mustafa Ibrahim Khamis; Yehya Amin Elsayed; Ziad Sara; Barra Hafez. Produced water treatment using olive leaves. Desalination and Water Treatment 2017, 60, 129 -136.

AMA Style

Taleb Hassan Ibrahim, Muhammad Ashraf Sabri, Mustafa Ibrahim Khamis, Yehya Amin Elsayed, Ziad Sara, Barra Hafez. Produced water treatment using olive leaves. Desalination and Water Treatment. 2017; 60 ():129-136.

Chicago/Turabian Style

Taleb Hassan Ibrahim; Muhammad Ashraf Sabri; Mustafa Ibrahim Khamis; Yehya Amin Elsayed; Ziad Sara; Barra Hafez. 2017. "Produced water treatment using olive leaves." Desalination and Water Treatment 60, no. : 129-136.

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.

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

Fatin Samara; Mustafa Khamis; Ziad Sara; Yehya Elsayed. Removal of benzo (a) anthracene from water using a novel UAE sludge-based activated adsorbent. Desalination and Water Treatment 2017, 100, 295 -302.

AMA Style

Fatin Samara, Mustafa Khamis, Ziad Sara, Yehya Elsayed. Removal of benzo (a) anthracene from water using a novel UAE sludge-based activated adsorbent. Desalination and Water Treatment. 2017; 100 ():295-302.

Chicago/Turabian Style

Fatin Samara; Mustafa Khamis; Ziad Sara; Yehya Elsayed. 2017. "Removal of benzo (a) anthracene from water using a novel UAE sludge-based activated adsorbent." Desalination and Water Treatment 100, no. : 295-302.

Journal article
Published: 13 May 2016 in Journal of Adhesion Science and Technology
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ACS Style

Taleb Ibrahim; Elron Gomes; Ime B. Obot; Mustafa Khamis; Mohamed Abou Zour. Corrosion inhibition of mild steel byCalotropisproceraleaves extract in a CO2saturated sodium chloride solution. Journal of Adhesion Science and Technology 2016, 30, 2523 -2543.

AMA Style

Taleb Ibrahim, Elron Gomes, Ime B. Obot, Mustafa Khamis, Mohamed Abou Zour. Corrosion inhibition of mild steel byCalotropisproceraleaves extract in a CO2saturated sodium chloride solution. Journal of Adhesion Science and Technology. 2016; 30 (23):2523-2543.

Chicago/Turabian Style

Taleb Ibrahim; Elron Gomes; Ime B. Obot; Mustafa Khamis; Mohamed Abou Zour. 2016. "Corrosion inhibition of mild steel byCalotropisproceraleaves extract in a CO2saturated sodium chloride solution." Journal of Adhesion Science and Technology 30, no. 23: 2523-2543.

Articles
Published: 07 March 2016 in Environmental Technology
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Kinetic studies on the stability of the pain killer paracetamol in Al-Quds activated sludge demonstrated that paracetamol underwent biodegradation within less than one month to furnish p-aminophenol in high yields. Characterizations of bacteria contained in Al-Quds sludge were accomplished. It was found that Pseudomonas aeruginosa is the bacterium most responsible for the biodegradation of paracetamol to p-aminophenol and hydroquinone. Batch adsorptions of paracetamol and its biodegradation product (p-aminophenol) by activated charcoal and a composite micelle (octadecyltrimethylammonium)–clay (montmorillonite) were determined at 25°C. Adsorption was adequately described by a Langmuir isotherm, and indicated better efficiency of removal by the micelle–clay complex. The ability of bench top reverse osmosis (RO) plant as well as advanced membrane pilot plant to remove paracetamol was also studied at different water matrixes to test the effect of organic matter composition. The results showed that at least 90% rejection was obtained by both plants. In addition, removal of paracetamol from RO brine was investigated by using photocatalytic processes; optimal conditions were found to be acidic or basic pH, in which paracetamol degraded in less than 5 min. Toxicity studies indicated that the effluent and brine were not toxic except for using extra low energy membrane which displayed a half maximal inhibitory concentration (IC-50) value of 80%.

ACS Style

Rafik Karaman; Mustafa Khamis; Jehad Abbadi; Ahmad Amro; Mohannad Qurie; Ibrahim Ayyad; Fatima Ayyash; Omar Hamarsheh; Reem Yaqmour; Shlomo Nir; Sabino A. Bufo; Laura Scrano; Sofia Lerman; Shirra Gur-Reznik; Carlos Dosoretz. Paracetamol biodegradation by activated sludge and photocatalysis and its removal by a micelle–clay complex, activated charcoal, and reverse osmosis membranes. Environmental Technology 2016, 37, 2414 -2427.

AMA Style

Rafik Karaman, Mustafa Khamis, Jehad Abbadi, Ahmad Amro, Mohannad Qurie, Ibrahim Ayyad, Fatima Ayyash, Omar Hamarsheh, Reem Yaqmour, Shlomo Nir, Sabino A. Bufo, Laura Scrano, Sofia Lerman, Shirra Gur-Reznik, Carlos Dosoretz. Paracetamol biodegradation by activated sludge and photocatalysis and its removal by a micelle–clay complex, activated charcoal, and reverse osmosis membranes. Environmental Technology. 2016; 37 (19):2414-2427.

Chicago/Turabian Style

Rafik Karaman; Mustafa Khamis; Jehad Abbadi; Ahmad Amro; Mohannad Qurie; Ibrahim Ayyad; Fatima Ayyash; Omar Hamarsheh; Reem Yaqmour; Shlomo Nir; Sabino A. Bufo; Laura Scrano; Sofia Lerman; Shirra Gur-Reznik; Carlos Dosoretz. 2016. "Paracetamol biodegradation by activated sludge and photocatalysis and its removal by a micelle–clay complex, activated charcoal, and reverse osmosis membranes." Environmental Technology 37, no. 19: 2414-2427.

Articles
Published: 20 July 2015 in Journal of Environmental Science and Health, Part A
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Stability and removal of spironolactone (SP) from wastewater produced at Al-Quds University Campus were investigated. Kinetic studies on both pure water and wastewater coming from secondary treatment (activated sludge) demonstrated that the potassium-sparing diuretic (water pill), spironolactone, underwent degradation to its hydrolytic derivative, canrenone, in both media. The first-order hydrolysis rate of SP in activated sludge at 25°C (3.80 × 10−5 s−1) was about 49-fold larger than in pure water (7.4 × 10−7 s−1). The overall performance of the wastewater treatment plant (WWTP) installed in the University Campus was assessed showing that more than 90% of spiked SP was removed together with its newly identified metabolites. In order to look for a technology to supplement or replace ultra-filtration membranes, the effectiveness of adsorption and filtration by micelle-clay filters for removing SP was tested in comparison with activated charcoal. Batch adsorption in aqueous suspensions was well described by Langmuir isotherms, showing a better removal by the micelle-clay material. Filtration of SP water solutions by columns filled with a mixture of sand and a micelle-clay complex showed complete removal of the drug at concentrations higher than in sand/activated-charcoal filled filters.

ACS Style

Saleh Sulaiman; Mustafa Khamis; Shlomo Nir; Filomena Lelario; Laura Scrano; Sabino A. Bufo; Rafik Karaman. Stability and removal of spironolactone from wastewater. Journal of Environmental Science and Health, Part A 2015, 50, 1127 -1135.

AMA Style

Saleh Sulaiman, Mustafa Khamis, Shlomo Nir, Filomena Lelario, Laura Scrano, Sabino A. Bufo, Rafik Karaman. Stability and removal of spironolactone from wastewater. Journal of Environmental Science and Health, Part A. 2015; 50 (11):1127-1135.

Chicago/Turabian Style

Saleh Sulaiman; Mustafa Khamis; Shlomo Nir; Filomena Lelario; Laura Scrano; Sabino A. Bufo; Rafik Karaman. 2015. "Stability and removal of spironolactone from wastewater." Journal of Environmental Science and Health, Part A 50, no. 11: 1127-1135.

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Published: 14 July 2015 in DESALINATION AND WATER TREATMENT
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In this study, the stability of chlorpyrifos, a known pesticide, in fresh water and sludge was investigated. The results showed that chlorpyrifos underwent hydrolysis in both media to give two main metabolites: 3,5,6-trichoro-2-pyridiniol (TCP) and diethylthiophosphoric acid (DETP). The hydrolysis reaction in both media was found to follow first-order kinetics with a rate constant of 7.10 × 10−8 (R2 = 0.999) in pure water and of 9.30 × 10−8 (R2 = 0.996) in sludge. Chlorpyrifos degradation’s half-life value in pure water was 112 d and in sludge was 85.9 d. The efficiency of Al-Quds University wastewater treatment plant demonstrated that the ultrafiltration-hollow fiber unit (UF-HF) was insufficient in removing chlorpyrifos from spiked secondary treated wastewater samples, whereas the combination of ultrafiltration-spiral wound unit (UF-SW) followed by activated carbon (AC) column was quite efficient and yielded a complete removal of the pesticide. Batch adsorption experiments using either AC or micelle–clay complex were performed and the experimental results were fitted to Langmuir and Freundlich isotherms. Adsorption analysis using Langmuir isotherm revealed that Qmax for the AC was higher than that of the micelle–clay complex, while Freundlich isotherm showed almost similar values of n (3.413 vs. 3.745) for both adsorbents, despite the fact that the activated carbon filter showed higher kF value. Filtration column of mixed micelle–clay complex and sand demonstrated a breakthrough point after the third fraction for chlorpyrifos removal and a complete removal for all fractions collected in the TCP experiment. This result reveals that mixed micelle–clay complex and sand column is much more efficient in removing TCP than removing its parent compound, chlorpyrifos.

ACS Style

Mohannad Qurie; Mustafa Khamis; Ibrahim Ayyad; Laura Scrano; Filomena Lelario; Sabino Aurelio Bufo; Gennaro Mecca; Rafik Karaman. Removal of chlorpyrifos using micelle–clay complex and advanced treatment technology. DESALINATION AND WATER TREATMENT 2015, 57, 15687 -15696.

AMA Style

Mohannad Qurie, Mustafa Khamis, Ibrahim Ayyad, Laura Scrano, Filomena Lelario, Sabino Aurelio Bufo, Gennaro Mecca, Rafik Karaman. Removal of chlorpyrifos using micelle–clay complex and advanced treatment technology. DESALINATION AND WATER TREATMENT. 2015; 57 (33):15687-15696.

Chicago/Turabian Style

Mohannad Qurie; Mustafa Khamis; Ibrahim Ayyad; Laura Scrano; Filomena Lelario; Sabino Aurelio Bufo; Gennaro Mecca; Rafik Karaman. 2015. "Removal of chlorpyrifos using micelle–clay complex and advanced treatment technology." DESALINATION AND WATER TREATMENT 57, no. 33: 15687-15696.

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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.

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Published: 14 July 2015 in DESALINATION AND WATER TREATMENT
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Sewage sludge from Dubai was characterized using inductively coupled plasma and CHN elemental analysis. Selected sludge samples were washed with deionized water until constant conductivity was achieved. The sludge samples (washed and unwashed) were carbonized at 680°C in a semi-static steam environment that was self-generated inside a homemade reaction chamber and with the absence of any external flow. The carbonized materials were then activated by impregnation with sodium hydroxide at 3:1 mass ratio followed by thermal treatment at 680°C in the presence of water. The activated products were characterized using SEM/EDS, CHN elemental analysis, and sorption of nitrogen. The results showed that washing the sludge prior to the carbonization step significantly enhanced the surface area of the final activated product. Activation efficiencies were lower than the carbonization efficiencies. The surface area of the activated adsorbent developed from the washed sludge was 1,552 m2/g compared to 1,182 m2/g of the unwashed sample. Pore size distribution showed slight shift to higher average pore size in the washed sample. The activated adsorbent with the highest surface area was then evaluated for the adsorption of lead. The adsorption capacity of the activated product for lead removal was determined using Toth isotherm. The maximum adsorption capacity for the activated washed sludge was found to be 95 mg/g. The energy contents of the washed raw sludge and the tar by-products that were produced during the carbonization process were found to be 14.8 and 38.1 kJ/g, respectively.

ACS Style

Yehya Elsayed; Mustafa Khamis; Fatin Samara; Maitha Alqaydi; Ziad Sara; Isam Al Zubaidi; Maruf Mortula. Novel method for water purification using activated adsorbents developed from sewage sludge. DESALINATION AND WATER TREATMENT 2015, 57, 1 -11.

AMA Style

Yehya Elsayed, Mustafa Khamis, Fatin Samara, Maitha Alqaydi, Ziad Sara, Isam Al Zubaidi, Maruf Mortula. Novel method for water purification using activated adsorbents developed from sewage sludge. DESALINATION AND WATER TREATMENT. 2015; 57 (33):1-11.

Chicago/Turabian Style

Yehya Elsayed; Mustafa Khamis; Fatin Samara; Maitha Alqaydi; Ziad Sara; Isam Al Zubaidi; Maruf Mortula. 2015. "Novel method for water purification using activated adsorbents developed from sewage sludge." DESALINATION AND WATER TREATMENT 57, no. 33: 1-11.