Dr. Enas M. Nashef obtaied his Ph. D. from the University of South Carolina, USA in 2004. He joined King Saud University, Riyadh, Saudi Arabia, as assistant professor in the department of chemical engineering. In 2011, Nashef was promoted to associate professor. He was very active in research related to green engineering and sustainability and established collaboration with many universities including the University of Malaya, KL, Malaysia, where he was a co- advisor for several Ph. D. students. In June 2014, Nashef joined Masdar Institute (UAE) as an associate professor in the department of chemical engineering. In 2017, he joined Khalifa University of Science and Technology as associate professor in the department of chemical engineering where he was promoted to full professor in 2019.
Nashef co-authored more than 140 peer-reviewed journal publications. In addition, he received 9 patents from US and EU Patent Offices. He is also a recipient of several prestigious awards including King Abdullah Award for best invention in 2013.
Co-PI, “Fine-tuned novel Graphene Oxide-based nanocomposite membranes for water nano filtration”, 960,000 AED, ASPIRE 2020.
The aim of this research work is to assess the performance of GO-based nanocomposites as novel functional materials for water desalination and purification, by a combined materials design/experimental study. In the first part of the study, screening of potential candidate materials (polymers and ILs) will be performed via a combined theoretical/computational protocol whereas an examination of the factors governing the sieving performance of the GO-based nanocomposites via atomistic MD simulations will be carried out. Based on the predictions of the first part, novel nanocomposite membranes will be synthesized, and permeation studies of water will be conducted at operational water desalination conditions. A comprehensive computational protocol modeling the reverse osmosis operation will also be developed, while the experimental tests results will be used as the basis for the next step, the pilot-scale studies of these fine-tuned GO-membranes.
PI, Waste Water Treatment Using Ionic Liquids, 300,000 AED, funded by ADEK, 2018-2020
Chlorophenols (CPs) are synthetic chemicals that are generated and used widely by different industries such as textile, pharmaceutical, metallurgic, oil, and pulp and paper manufacturing. Except water, most of the solvents used in these industries are volatile and toxic. Therefore, there is an imminent need for replacing these solvents by solvents that have less negative impact on the environment. In addition, CPs are considered as hazardous pollutants due to their resistance to biodegradation and persistence in the environment. Their toxic effects are severe including DNA damage, endocrine disruption, cytotoxicity, mutagenicity, and carcinogenicity. Hence, the water contaminated by CPs must be treated before being released to the environment. Ionic liquids (ILs) are molten salts that are liquid below 100 °C, which have been used as solvents for many processes including liquid-liquid extraction and as electrolytes in electrochemical devices. ILs are characterized by negligible vapor pressure and non-flammability. These compounds are liquid over a wide range of temperatures; possess high thermal and chemical stability. Solubility data of CPs in ILs is important for assessing the potential use of ILs as reaction media and in water treatment, but relevant data for ILs are scarce. To our best knowledge, no solubility data of chlorophenols in ILs were reported in the literature. Thus, in this study, the solubility of 3-chlorophenol (3-CP), 2,5-dichlorophenol (DCP), 2,4,6-trichlorophenol (TCP), and pentachlorophenol (PCP) in six hydrophobic bis(trifluoromethylsulfonyl)imide based ILs at 25, 35, and 45 °C was investigated. It was found that the solubility of 3-CP in all studied ILs at 25 °C was greater than 70 wt%, thus the solubility measurements of 3-chlorophenol in the studied IL were stopped at 70 wt% and further measurement was not conducted. The solubility of other CPs in all studied ILs decreased with increasing the number of chlorine atoms in the CP and increased with the increase in temperature, but the degree of increase depended on the structure of both the IL and chlorinated phenol. In general, it was found that the tested chlorophenols have substantial solubility in pyridinium and imidazolium-based ILs. In addition, the non-random two-liquid model (NRTL) and Conductor-like Screening Model for Real Solvents (COSMO-RS) models were applied to predict the solubility of chlorophenols in all ILs used in this study. There was a good quantitative and qualitative agreement between experimental and calculated solubility data in most of the cases.
(1) R. Sulaiman, , I. Adeyemi, S.R. Abraham, S.W. Hasan, I.M. AlNashef, Liquid-liquid extraction of chlorophenols from wastewater using hydrophobic ionic liquids. Journal of Molecular Liquids, 294 (2019) 111680
(2) Adeyemi, I., Sulaiman, R., Almazroui, M., Al-Hammadi, A., AlNashef, I.M. (2020). Removal of chlorophenols from aqueous media with hydrophobic deep eutectic solvents: Experimental study and COSMO RS evaluation. Journal of Molecular Liquids, 31, 113180.
1. AlZahrani, S. M., AlNashef, I. M. and Sarwono Mulyono Mulyoprayitno, European Patent No. EP 2650345 B1, Method for removal of sulfur containing compounds from hydrocarbon mixtures, 21 January 2015.
2. AlNashef, I. M. AlZahrani, S. M. European Patent No. EP2596836 B1, Method for decomposing a halogenated organic compound, 5 March 2014.
3. Hashim, M. A., Mjalli, F. S., AlNashef, I. M., and Kaveh, S., Malaysian patent No. MY-150819-A, A Method for Removing Residual Catalyst from Biodiesel, 28 February 2014.
4. Hayyan, M.; Hashim, M. A. ; Saputra, H.; Saadi, M. A. ; Hayyan, A. ; AlNashef, I. M. ; Othman, R. A. Malaysian patent No. MY-150624-A, Metal-Air Battery Utilizing Phosphonium-Based Deep Eutectic Solvent, 7 February 2014.
5. AlNashef, I. M., AlZahrani, S. M. US patent No. 8,618,346. Process for the destruction of sulfur and nitrogen mustards, lewisite, and their homologous/analogues at ambient conditions. 31 December 2013.
6. AlNashef, I. M., AlZahrani, S. M. US patent No. 8,420,881. Process for the destruction of sulfur and nitrogen mustards, lewisite, and their homologous/analogues in deep eutectic solvents. 16 April 2013.
7. AlNashef, I. M., AlZahrani, S. M. US patent No. 8,147,792. Method for the Preparation of Reactive Compositions Containing Superoxide ion. 3 April 2012.
8. AlNashef, I. M., Gaily, M., AlZahrani, S. M., and Aba Saeed, A. US patent No. 7,942,972 B2. Method for Separating Fructose and Glucose. 17 May 2011.
9. AlNashef, I. M., AlZahrani, S. M. US patent No. 7,763,768 B2. Method for the Preparation of Reactive Compositions Containing Hydrogen Peroxide. 27 July 2010.
2- Selected Publications:
1. Jisha Kuttiani Ali, Emad Alhseinat, Maguy Abi Jaoude, Inas M. Al Nashef, Idowu A. Adeyemi, Tejraj M. Aminabhavi, Hassan A. Arafat, A mixed matrix polyimide ultrafiltration membrane for efficient removal of bentazon from water Chemical Engineering Journal, 433, 2022,134596.
2. Almustafa, G., Darwish, A.S., Lemaoui, T., Arafat, H.A., AlNashef, I. Liquification of 2,2,4-trimethyl-1,3-pentanediol into hydrophobic eutectic mixtures: A multi-criteria design for eco-efficient boron recovery, 2021, Chemical Engineering Journal, 426,131342.
3. Tarek Lemaoui, Farah Abu Hatab, Ahmad S. Darwish, Ayoub Attoui, Nour El Houda Hammoudi, Ghaiath Almustafa, Mohamed Benaicha, Yacine Benguerba, Inas M. Alnashef, Molecular-Based Guide to Predict the pH of Eutectic Solvents: Promoting an Efficient Design Approach for New Green Solvents, ACS Sustainable Chem. Eng. 2021, 9, 5783−5808.
4. Tarek Lemaoui, Yacine Benguerba, Ahmad S. Darwish, Farah Abu Hatab, Samah E. E. Warrag, Maaike C. Kroon, Inas M. Alnashef, Simultaneous dearomatization, desulfurization, and denitrogenation of diesel fuels using acidic deep eutectic solvents as extractive agents: A parametric study, Separation and Purification Technology, 256, 2021, 117861.
5. Adeyemi, I., Sulaiman, R., Almazroui, M., Al-Hammadi, A., AlNashef, I. Removal of chlorophenols from aqueous media with hydrophobic deep eutectic solvents: Experimental study and COSMO-RS evaluation. J. of Molecular Liquids, 311, 2020, Article number 113180.
6. Ghaiath Almustafa, Reyihangu Sulaiman, Mahendra Kumar, Idowu Adeyemi, Hassan A.Arafat, Inas AlNashef. Boron extraction from aqueous medium using novel hydrophobic deep eutectic solvents, Chemical Engineering Journal, 395, 2020, 125173.
7. R. Sulaiman, M. K. Hadj-Kali, S.W.Hasan, S. Mulyono, I.M. AlNashef, Investigating the solubility of chlorophenols in hydrophobic ionic liquids, The Journal of Chemical Thermodynamics, 135, 2019, 97-106.
8. Saleem S. AlSaleem, Waleed M. Zahid, Inas M. Alnashef, Husnain Haider, Destruction of environmentally hazardous halogenated hydrocarbons in stable ionic liquids with superoxide ion radical, Separation and Purification Technology, 215, 2019, 134-142.
9. Dang Viet Quang, Lourdes F. Vega, Enas Nashef. Mohammad R.M. Abu-Zahraa, Applications of fly ash for CO2 capture, utilization, and storage, Abdallah Dindia, J. of CO2 Utilization, 29, 2019, 82-102.
10. I. Adeyemi, M.R. M. Abu-Zahra, I. Alnashef, Experimental Study of the Solubility of CO2 in Novel Amine Based Deep Eutectic Solvents, Energy Procedia, 105, 1394-1400, 2017.
11. S.S. AlSaleem, W.M. Zahid, I.M. Alnashef, H. Haider, Extraction of halogenated hydrocarbons using hydrophobic ionic liquids, Separation and Purification Technology, 184, 231-239, 2017.
12. Maan Hayyan, Mohd Ali Hashim, and Inas M. AlNashef, Superoxide Ion: Generation and Chemical Implications, Chem. Rev. 116 (5), 3029–3085, 2016.
13. L. Bahadori, M. H. Chakrabarti, , M. A. Hashim, N. S. A. Manan, F. S. Mjalli, I. M. AlNashef, N. P. Brandon, Temperature effects on the kinetics of ferrocene and cobaltocenium in methyltriphenylphosphonium bromide based deep eutectic solvents, Journal of The Electrochemical Society, 162 (9) H617-H624, 2015.
14. M.H. Chakrabarti, N.S.A. Manan, N.P. Brandon, R.C. Maher, F.S. Mjalli, I.M. AlNashef, S.A. Hajimolan, M.A. Hashim, M.A. Hussain, D. Nir, One-pot electrochemical gram-scale synthesis of graphene using deep eutectic solvents and acetonitrile, Chemical Engineering Journal, 274 213–223, 2015.
15. Fatemeh Saadat Ghareh Bagh, Mohamed Kamel Omar Hadj-Kali, Farouq S. Mjalli, Mohd Ali Hashim, Inas M. AlNashef, Solubility of sodium chloride in phosphonium-based deep eutectic solvents, Journal of Molecular Liquids, 199, 344-351, 2014.
16. Emad Ali; Sarwono Mulyono Inas M. AlNashef; Farouq S. Mjalli; Adeeb Hayyan; Mohamed Kamel Hadj-Kali ,Solubility of CO2 in deep eutectic solvents: experimental and modeling using Peng?Robinson equation of state, Chemical Engineering Research and Design, 92,10,1898–1906, 2014.
17. Laleh Bahadori, Mohammed H. Chakrabarti, Farouq S. Mjalli, Inas M. AlNashef, Ninie S. Abdul Manan, Mohd Ali Hashim. Physicochemical properties of ammonium-based deep eutectic solvents and their electrochemical evaluation using organometallic reference redox systems, Electrochimica Acta, 113, 205-211, 2013.
18. Fatemeh Bagh, Farouq S. Mjalli, Mohd Ali Hashim, Mohamed K. O. Hadj-Kali, Inas M. AlNashef, Solubility of Sodium Chloride in Ionic Liquids, Industrial and engineering chemistry research, 52, 33, 11488-11493, 2013.
19. Hayyan, M., Farouq S. Mjalli, Mohd Ali Hashim, AlNashef, I. M. Generation of Superoxide Ion in Pyridinium, Morpholinium, Ammonium and Sulfonium Based Ionic Liquids and the Application in the Destruction of Toxic Chlorinated Phenols, Journal of Industrial & Engineering Chemistry Research, 51, 32, 10546–10556, 2012.
20. Shahbaz, K., Mjalli, F.S., Hashim, M. A., and AlNashef, I.M. Eutectic solvents for the removal of residual palm oil-based biodiesel catalyst. Separation and Purification Technology, 81, 216–222, 2011.
21. AlNashef, I.M., Hashim, M.A., Mjalli, F.S., Ali, Q.A., Hayyan, M., A novel method for the synthesis of 2-imidazolones, Tetrahedron Letters 51, 1976–1978, 2010.
22. AlNashef, I. M., AlAmeeri, R. S., AlSahhaf, T. A., and Hamam, S. E. M. Phase Equilibria of the Ternary System CO2-n-Hexane-Naphthalene. Korean Journal of Chemical Engineers, 25, 6, 1495-1498, 2008.
23. AlNashef, I. M., Matthews, M. A., and Weidner, J. W. Electrochemically Generated Superoxide Ion in Ionic Liquids: Applications to Green Chemistry, in Ionic Liquids as Green Solvents: Progress and Prospects, Rogers, R.; and Seddon, K. Editors, ACS, Washington, pp 509-525, 2003.
24. AlNashef, I. M.; Leonard, M. L.; Matthews, M. A.; and Weidner, J. W. Superoxide Electrochemistry in an Ionic Liquid. Ind. Eng. Chem. Res. 41, 4475, 2002.
25. AlNashef, I. M., Leonard, M. L., Kittle, L. M., Matthews, M. A., and Weidner, J. W. Electrochemical Generation of Superoxide in Room-Temperature Ionic Liquids, Electrochem. Solid-State Letters. 4, D16, 2001.
26. Fahim, M. A.; Al-Muhtaseb, S. A., and Al-Nashef I. M. Liquid-liquid equilibria of the ternary system water + acetic acid + 1-hexanol J. Chem. Eng. Data, 42, 183, 1997.
27. Fahim, M. A.; Al-Muhtaseb, S. A., and Al-Nashef I. M. Phase equilibria of the ternary system water + acetic acid + 1-pentanol, J. Chem. Eng. Data, 41, 562, 1996.
28. Sahaf, T.A., Ameeri, R.S., Nashef, I.M., and Hamam, S.E.M., Bubble point measurements for the ternary system carbon dioxide, benzene, and naphthalene, Fluid Phase Equilibria J., 55, 231, 1990.