Chapters in Books

1. Zhang, Z.; M. H. Ibrahim; H. El-Naas; J. Cai, “Zeolites Nanocomposite Membrane Applications in CO2 Capture”, Chapter 50 in Handbook of Nanomaterials for Industrial Applications: A volume in Micro and Nano Technologies, Editor: Chaudhery M. Hussain, Elsevier (2018). ISBN 978-0-12-813351-4
2. Zacharia, R., H. El-Naas, and M. J. Al-Marri, “Photocatalytic Oxidation of Non-Acid Oxygenated Hydrocarbons: Application in GTL Process”, Chapter 15 in Water Management : Social and Technological Perspectives, Edited by Mutiu Kolade AMOSA , IQBAL M. Mujtaba ,  Thokozani Majozi, Taylor & Francis Ltd (2018). ISBN  9781138067240
3. Al-Khalid, T. and H. El-Naas, “Organic Contaminants in Refinery Wastewater: Characterization and Novel Approaches for Biotreatment”, in Petroleum Science and Engineering, Editor: M. Zoveidavianpoor, InTech (2018). ISBN 978-953-51-5321-4
4. Zhien Z., T. N. G. Borhani, H. El-Naas, CO₂ Capture, in Exergetic, Energetic and Environmental Dimensions, Editors: Ibrahim Dincer, Can Ozgur Colpan, Onder Kizilkan, Elsevier (2018). ISBN 978-0128137345.
5. Moussa, D. T. and H. El-Naas, Electrochemical technologies for produced water treatment, Chapter 13 in Inorganic Pollutants in Wastewater: Methods of Analysis, Removal and Treatment, Editors: Inamuddin, Abdullah M. Asiri and Ali Mohammad, Materials Research Forum (2017). ISBN 978-1-945291-34-0.
6. El–Naas, H., Hussein A. Mousa and Maisa El Gamal, Microbial Degradation of Chlorophenols, in Microbe-induced Degradation of Pesticides, Edited by: S. N. Singh, Springer (2017)
7. El-Naas, M. H., Reject Brine Management, in Desalination, Trends and Technologies, Edited by: Michael Schorr, Publisher: InTech, February 2011; ISBN 978-953-307-311-8.
8. El-Naas, M. H. and M. A. Alhaija, Modeling of Adsorption Processes, in Mathematical Modelling, Edited by: Christopher R. Brennan, Nova Publishing, June 2011, ISBN: 978-1-61209-651-3

Patent Applications

1. Deina T. A., El-Naas, M. H., “Electrocoagulation Cell Design”. U.S. Patent Application No. 16/160,786 (2018).
2. Magzoub, M. I., El-Naas, M. H., Nasser, M. S., “Utilization of Steel-Making Waste in Drilling Fluids Formulations”. U.S. Patent Application No. 16/156,923 (2018).
3. El-Naas, M. H., ” Process for Capture of Carbon Dioxide and Desalination” US Patent No. 10,118,843 B2 (2018).
4. El-Naas, M. H., “System for Contacting Gases and Liquids” US Patent No. 9,724,639 B2 (2017).
5. El-Naas, M. H., Acio and A. Hassan “Spouted Bed Bio-Reactor System” US Patent Application No. 13/975,834
6. El-Naas, M. H. and S. Al-Zuhair, Process and System for the Treatment of Industrial and Petroleum Refinery Wastewater; Canadian Patent No. 2,796,105
7. El-Naas, M. H. and S. Al-Zuhair, Process and System for the Treatment of Industrial and Petroleum Refinery Wastewater; UK Patent Application No. 1202411.3; US No. 13/676,755.

Articles in Refereed Journals

1. Bouabidi, Z. B; H. El-Naas; Z. Zhang, Immobilization of Microbial Cells for the Biotreatment of Wastewater: A Review, Environmental Chemistry Letters (2018), 1-17.
2. El-Naas, M. H., Zacharia, R., N. Elbashir, Zhang, Z., Dindoruk, B., Editorial for the special issue (GPS, 2016), Journal of Natural Gas Science and Engineering (2018), 55, 563-564.
3. Shaikh, S. M. R.; Nasser, M. S.; Magzoub, M.; Benamor, A.; Hussein, I. A.; El-Naas, M. H.; Qiblawey, H. Effect of electrolytes on electrokinetics and flocculation behavior of bentonite-polyacrylamide dispersions. Applied Clay Science 2018, 158, 46.
4. Ibrahim, M., M. H. El-Naas, Z. Zhang, and B. Van der Bruggen,CO2 Capture Using Hollow Fiber Membranes: A Review of Membrane Wetting, Energy Fuels (2018), 32, 963−978
5. El Gamal, M., H. A Mousa, M. H El-Naas, R. Zacharia, S. Judd, “Bio-regeneration of Activated Carbon: A Comprehensive Review, Separation and Purification Technology (2018), 197, 345-359
6. Bouabidi, Z. B., H. El-Naas, D. Cortes, G. McKay, Steel-Making dust as a potential adsorbent for the removal of lead (II) from an aqueous solution, Chemical Engineering Journal 334 (2018) 837–844
7. Abotaleb, A., M. H. El-Naas, A. Amhamed, Enhancing gas loading and reducing energy consumption in acid gas removal systems: A simulation study based on real NGL plant data, Journal of Natural Gas Science and Engineering (2017). Doi.org/10.1016/j.jngse.2017.08.011
8. Al-Saydeh, S. A., S. J. Zaidi, M. H. El-Naas, Conversion of carbon dioxide: Opportunities and fundamental challenges, American Journal of Engineering and Applied Sciences, 2018, 11 (1): 138-153.
9. Surkatti, R., M. H. El-Naas, Competitive interference during the biodegradation of cresols, International Journal of Environmental Science and Technology (2018), Volume 15, Issue 2, pp 301–308
10. Al-Saydeh, S. A., M. H. El-Naas, S. J. Zaidi, Copper removal from industrial wastewater: A comprehensive review, Journal of Industrial and Engineering Chemistry 56 (2017) 35–44.
11. El-Naas, M. H., F. Mohammad, M. I. Suleiman, M. Al Musharfy and A. H. Al-Marzouqi, A New Process for the Capture of CO2 and Reduction of Water Salinity, Desalination 411 (2017) 69–75
12. El-Naas, M. H., Alhaija, M.A., Al-Zuhair, S., Evaluation of an activated carbon packed bed for the adsorption of phenols from petroleum refinery wastewater, Environmental Science and Pollution Research (2017) 24:7511–7520.
13. El-Naas, M. H., F. Mohammad, M. I. Suleiman, M. Al Musharfy and A. H. Al-Marzouqi, Evaluation of a Novel Gas-Liquid Contactor/Reactor system for Natural Gas applications, Journal of Natural Gas Science and Engineering. 39 (2017) 133-142
14. Moussa, D. T., M. H. El-Naas, M. Nasser, M. J. Al-Marri, A comprehensive review of electrocoagulation for water treatment: Potentials and challenges, Journal of Environmental Management 186 (2017) 24-41.
15. El-Naas, M. H., R. Surkatti, S. Al-Zuhair, Petroleum refinery wastewater treatment: A pilot scale study, Journal of Water Process Engineering. (2016), http://dx.doi.org/10.1016/j.jwpe.2016.10.005.
16. El-Naas, M. H., Z. M. Ismail, M. H. Al-Marzouqi, Correlating the physical solubility of CO₂ in several amines to the concentrations of amine groups, Journal of Natural Gas Science and Engineering, 34 (2016) 841–848.
17. El-Naas , M. H., F. Mohammad, M. I. Suleiman, M. Al Musharfy, A. H. Al-Marzouqi, Statistical analysis and Optimization of a Process for CO₂ Capture, International Journal of Chemical and Molecular Engineering, Vol. 10, No. 4 (2016) 382-389.
18. El Telib, A. E., M. H. El-Naas, J. A. Acio, Biodegradation of BTEX: Optimization through Response Surface Methodology, American Journal of Engineering and Applied Sciences, In Press (2016).
19. Hasan, S., M. H. El-Naas, “Optimization of a Combined Approach for the Treatment of Carbide Slurry and Capture of CO₂,” American Journal of Engineering and Applied Sciences, 9, No. 3 (2016),  449-457.
20. Mohammad, A. F., M. H. El-Naas, M. I. Suleiman, and M. Al Musharfy, “Optimization of a Solvay-Based Approach for CO₂ Capture,” International Journal of Chemical Engineering and Applications, 7 (2016) 230-234.
21. El-Naas, M. H., El Gamal, S. Hameedi, A.M.O. Mohamed, CO₂ Sequestration Using Accelerated Gas-Solid Carbonation of Pre-treated EAF Steel-making Bag House Dust, Journal of Environmental Management 156 (2015) 218-224.
22. Hamdan, S. S., M. H. El-Naas, An electrocoagulation column (ECC) for groundwater purification, Journal of Water Process Engineering 4 (2014) 25–30
23. El-Naas, M. H., A. Acio, A. E. El Telib, Aerobic Biodegradation of BTEX: Progresses and Prospects, Journal of Environmental Chemical Engineering 2 (2014) 1104–112.
24. Surkatti, R. and M. H. El-Naas, Biological treatment of wastewater contaminated with p-cresol using Pseudomonas putida immobilized in polyvinyl alcohol (PVA) gel, Journal of Water Process Engineering 1 (2014) 84–90.
25. El-Naas, M. H., S. Al-Zuhair, and M. Abu Alhaija, Evaluation of a three-step process for the treatment of petroleum refinery wastewater, Journal of Environmental Chemical Engineering 2 (2014) 56–62.
26. Hamdan S., M. H. El-Naas, Characterization of the removal of Chromium (VI) from groundwater by electrocoagulation, Journal of Industrial and Engineering Chemistry, 20 (2014) 2775–2781
27. Al-Khalid, T. and M. H. El-Naas, Biodegradation of Phenol and 2, 4 Dichlorophenol: The Role of Glucose in Biomass Acclimatization, International Journal of Engineering Research & Technology, 1 No. 3 (2014) 1579-1586.
28. Al-Nakoua, M. and M. H. El-Naas, CO₂ Reforming of Methane in a Probe Reactor with a Thin Catalyst Layer, International Journal of Engineering Research & Technology, 3 No. 2 (2014) 1885-1888.
29. Soliman, A. M., M. H. El-Naas , O. Chaalal, Adsorption of Crystal Violet on Sludge produced from Refinery Wastewater Treatment: Characterization of Sludge Equilibrium and Kinetic Studies, International Journal of Chemical and Environmental Engineering , 4, No. 6 (2013) 390-398.
30. Al-Khalid, T. and M. H. El-Naas, Transient Behavior in Biodegradation of 2, 4 Dichlorophenol: Is It a Starvation Effect? International Journal of Chemical Engineering and Applications, 4, No. 6 (2013) 365-368.
31. El-Naas M. H., A-H. I. Mourad, and R. Surkatti, Evaluation of the Characteristics of Polyvinyl alcohol (PVA) as Matrices for the Immobilization of Pseudomonas Putida, International Biodeterioration & Biodegradation 85 (2013) 413-420.
32. El-Naas, M. H., S. Al-Zuhair, A. Al-Lobaney, Treatment of Petroleum Refinery Wastewater by Continuous Electrocoagulation, International Journal of Engineering Research & Technology, 2, No. 10 (2013) 2144-2150
33. Al-Zuhair, S., K. Ahmed, A. Abdulrazak, M. H. El-Naas, Synergistic Effect of Pretreatment and Hydrolysis Enzymes on the Production of Fermentable Sugars from Date Palm Lignocellulosic Waste, Journal of Industrial and Engineering Chemistry, 19 (2013) 413-415
34. Al-Khalid, T. and M. H. El-Naas, Aerobic Biodegradation of Phenols: A Comprehensive Review, Critical Reviews in Environmental Science and Technology, 42 (2012) 1632-1690.
35. Al-Zuhair, S. and M. H. El-Naas, Phenol Biodegradation by Ralstonia Pickettii Extracted from Petroleum Refinery Oil Sludge. Chemical Engineering Communications, 199 (2012) 1194-1204.
36. Al-Marzouqi, M. and M. H. El-Naas, The Role of Environmental Design Competitions in Engineering Education, International Journal of Engineering Education, 28, No. 4 (2012) 959-965.
37. Abu-Jdayil, B., M. A. Al-Nakoua, M. H. El-Naas, and A. Khaleel, Rheological Characteristics of Nickel–Alumina Sol–Gel Catalyst, Fuel Processing Technology, 102 (2012) 85-89.
38. Al-Nakoua, M. A. and M. H. El-Naas, Combined Steam and Dry Reforming of Methane in Narrow Channel Reactors, International Journal of Hydrogen Energy, 37 (2012) 7538-7544.
39. El-Naas, H., Teaching Water Desalination through Active Learning, Education for Chemical Engineers, Volume 6, Issue 4, December 2011, Pages e97-e102.
40. Al-Zuhair S. and M. H. El-Naas, Immobilization of Pseudomonas Putida in PVA Gel Particles for the Biodegradation of Phenol at High Concentrations, Biochemical Engineering Journal, 56, 1-2 (2011) 46-50.
41. Al-Nakoua, M. A., M. H., El-Naas, and B. Abu Jdayil, Characterization and Testing of Sol-Gel Catalysts Prepared as Thin Layers in a Plate Reactor, Fuel Processing Technology, 92, 10 (2011) 1836-1841.
42. Faiz, F., H. El-Naas, and M. H. Al-Marzouqi, Significance of Gas Velocity Change during the Transport of CO₂ through Hollow Fiber Membrane Contactors, Chemical Engineering Journal, 168 (2011) 593–603.
43. El-Naas, M. H., Electrocoagulation for the Treatment of Petroleum Refinery Wastewater, Hydrocarbon World, 5 (2010) 1.
44. El-Naas, M. H., S. Al-Zuhair, and M. Abu Alhaija, Removal of Phenol from Petroleum Refinery Wastewater through Adsorption on Date-Pit Activated Carbon, Chemical Engineering Journal, 162 (2010) 997–1005.
45. El-Naas, M. H., I. Mourad, S. Al-Zuhair, and R. Surkatti, Characterization of Polyvinyl alcohol (PVA) Gel as Support for Microbial Immobilization , Journal of Biotechnology, 150, Supplement 1 (2010).
46. El-Naas, M. H., Al-Zuhair, and S. Makhlouf, Continuous Biodegradation of Phenol in a Spouted Bed Bioreactor (SBBR), Chemical Engineering Journal, 160 (2010) 565–570.
47. El-Naas, M. H., Al-Marzouqi, S. A. Marzouk, and N. Abdullatif, Evaluation of the Removal of CO₂ using Membrane Contactors: Membrane Wettability, Journal of Membrane Science, 350 (2010) 410–416.
48. El-Naas, M. H., Al-Zuhair, and S. Makhlouf, Batch Degradation of Phenol in a Spouted Bed Bioreactor System, Journal of Industrial and Engineering Chemistry, 16 (2010) 267-272.
49. Marzouk S. A., M. H. Al-Marzouqi, M. H. El-Naas, N. Abdullatif and Z. M. Ismail, Removal of Carbon Dioxide from Pressurized CO₂–CH₄ Gas Mixture using Hollow Fiber Membrane Contactors, Journal of Membrane Science, 351 (2010) 21-27.
50. El-Naas, M. H., A. H. Al-Marzouqi, and O. Chaalal, A Combined Approach for the Management of Desalination Reject Brine and Capture of CO₂, Desalination, 251 (2010) 70-74.
51. El-Naas, M. H., S. Al-Zuhair, and M. Abu Alhaija, Reduction of COD in Refinery Wastewater through Adsorption on Date-Pit Activated Carbon, Journal of Hazardous Materials, 173 (2010) 750-757.
52. El-Naas, M. H., S. Al-Zuhair, A. Al-Lobaney, and S. Makhlouf, Assessment of Electrocoagulation for the Treatment of Petroleum Refinery Wastewater, Journal of Environmental Management, 91 (2009) 180-185.
53. Ghasem, N., M. H. Al-Marzouqi, and M. H. El-Naas, Effect of Temperature, Composition, and Shear Rate on Polyvinylidene Fluoride/Dimethylacetamide Solution Viscosity, Journal of Chemical and Engineering Data, 54 (2009) 3276-3280
54. El-Naas, M. H., Al-Muhtaseb, and S. Makhlouf, Biodegradation of Phenol by Pseudomonas Putida Immobilized on Polyvinyl Alcohol (PVA) Gel, Journal of Hazardous Materials, 164 (2009) 720-725.
55. Al-Marzouqi, M., S. Marzouk, M. H. El-Naas, and N. Abdullatif, CO₂ Removal from CO₂-CH₄ Gas Mixture Using Different Solvents and Hollow Fiber Membranes, Industrial and Engineering Chemistry Research, 48 (2009) 3600-3605.
56. El-Naas, M. H. and S. Makhlouf, A Spouted Bed Bioreactor for the Biodegradation of Phenols in Refinery Wastewater, Journal of Biotechnology, Vol. 13, Supplement 1 (2008).
57. Al-Zuhair, S., M. H. El-Naas, and H. Al-Hassani, Sulfate Inhibition Effect on Sulfate Reducing Bacteria, Journal of Biochemical Technology , 1(2) (2008) 39-44.
58. Al-Marzouqi, M., M. H. El-Naas, S. Marzouk, and N. Abdullatif, Modeling of Chemical Absorption of CO₂ in Membrane Contactors, Separation and Purification Technology, 62 (2008) 499-506.
59. Al-Muhtaseb, S. A., M. H. El-Naas, and S. Abdullah, Removal of Aluminum from Aqueous Solutions by Adsorption on Date-Pit and BDH Activated Carbons, Journal of Hazardous Materials, 158 (2008) 300-307.
60. Al-Marzouqi, M. H., H. El-Naas, S. A. M. Marzouk, M. A. Al-Zarooni, N. Abdullatif, and R. Faiz, Modeling of CO₂ Absorption in Membrane Contactors, Separation and Purification Technology, 59 (2008) 286-293.
61. El-Naas, M. H., Abu Al-Rub, I. Ashour, and M. Al Marzouqi, Effect of Competitive Interference on the Biosorption of Lead (II) by C. Vulgaris, Chemical Engineering and Processing, 46 (2007) 1391-1399.
62. El-Naas, M. H., R. J. Munz, J. Rossi and A. Zekri, Plasma Heating of Carbonate Formations, Petroleum Science and Technology, 25 (2007) 1143-1161.
63. Abu Al-Rub, F., H. El-Naas, I. Ashour, and M. Al Marzouqi, Biosorption of Copper on Chlorella vulgaris from Single, Binary and Ternary Metal Aqueous Solutions, Process Biochemistry, 41 (2) (2006) 457-464.
64. Al Marzouqi, H., M. A. Abdulkarim, S. A. Marzouk, M. H. El-Naas, and H. Hassanain, Facilitated Transport of CO₂ through Immobilized Liquid Membrane, Industrial & Engineering Chemistry Research, 44 (2005) 9273-9278.
65. Abu Al-Rub, F., H El-Naas, F. Ben Yehia, and I. Ashour, Biosorption of Nickel on Blank Alginate Beads, Free and Immobilized Algal Cells, Process Biochemistry, 39 No.11 (2004) 1767-1773.
66. El-Naas, M. H. and A. Zekri, A Novel Plasma Technique to Stimulate Tight Carbonate Rocks, Energy Sources, 24 No.3 (2002) 181-194.
67. El-Naas, M. H., S. Rognon, R. Legros, and R.C.Mayer, Hydrodynamics and Mass Transfer in a Spouted Bed Dryer, Drying Technology, 18 No. 1 (2000) 323-340.
68. Hastaoglu, M. A., N. Hilal,, M. Abdulkarim, and H. El-Naas, Transient multi Gas-Solid Reactions in a Bubbling Fluidized Bed, Canadian Journal of Chemical Engineering, 78 (2000) 433-441.
69. El-Naas, M. H., J. Munz, and F. Ajersch, Solid Phase Synthesis of Calcium Carbide in a Plasma Reactor, Plasma Chemistry and Plasma Processing, 18 No.3 (1998) 409- 427.
70. El-Naas, M. H., J. Munz, and F. Ajersch, Modelling of a Plasma Reactor for the Synthesis of Calcium Carbide, Canadian Metallurgical Quarterly, 37 No.1 (1998) 67-74.
71. El-Naas, M. H., J. Munz, and D. Berk, Pyrolysis of CANMET Co-Processing Residue in Argon/Hydrogen Plasma, Canadian Journal of Chemical Engineering, 71 (1993) 866-872.

Other Professional Papers and Talks, Abstracts, Presented at Conferences

Refereed conference proceedings

1. Mohammad A. F., El‐Naas M. H., Al‐Marzouqi A. H., Al‐Marzouq A., Suleiman M.I., Al‐Musharfy M., Firmansyah T., CFD simulation of a novel gas‐liquid reactor system, The 23^rd International Conference on Chemical Reactors (CHEMREACTOR‐23), Ghent, Belgium, November 5‐9, 2018.
2. El-Naas, M. H., F. Mohammad, M. I. Suleiman, M. Al Musharfy and A. H. Al Marzouqi, “Recovery of Magnesium from High Salinity Water as Magnesium Hydroxide”, Frontiers International Conference on Waste Water Treatment, May 21-24, 2017, Palermo, Italy
3. El-Naas, M. H., A. Mohammad, M. I. Suleiman, and M. Al Musharfy, “Statistical Analysis and Optimization of a Process for CO2 Capture”, the 18th International Conference on Environmental Science and Technology, Venice, Italy, April 11-12, 2016.
4. El-Naas, M. H., S. Hamdan (2014) “Removal of hexavalent chromium from groundwater by continuous electrocoagulation” The 5th International Conference on Chemical Engineering and Applications, August 2014, Taipei, Taiwan
5. El-Naas, H., A-M Mohamed, M. El Gamal, Sequestration of Carbon Dioxide using EAF Steel Slag in a Fluidized Bed Reactor, The World Congress of Chemical Engineering, WCCE 9, August 2013, Seoul, Korea.
6. El-Naas, M. and  R. Surkatti, A-H Mourad, Evaluation of the Mechanical Properties of Poly Vinyl Alcohol (PVA) Gel for Biomass Immobilization, The World Congress of Chemical Engineering, WCCE 9, August 2013, Seoul, Korea.
7. El-Naas, H. and S. Hamdan, Assessment of Electrocoagulation for the Removal of Cr (VI) from Groundwater, The 2^nd  International Conference on Chemical Engineering and Applications (CCEA 2011), Male, Maldives, November 2011.
8. El-Naas, M. H., Al-Zuhair, and M. Alhaija, Adsorption of Organic Contaminants on Date-Pit Activated Carbon, The 13^th Asia Pacific Confederation of Chemical Engineering Congress, Taipei, Taiwan 2010.
9. Al Nakoua, M. A. and H., El-Naas, Probe and Channel Reactors with a Thin Catalyst Layer, The 13th Asia Pacific Confederation of Chemical Engineering Congress, Taipei, Taiwan 2010.
10. El-Naas, M. H., An Active Learning Approach to Teaching Water Desalination”. International Conference on Education, Research and Innovation, Madrid, Spain 2009.
11. Ghasem, G., M. Al-Marzouqi, and H. El-Naas, Teaching Chemical Engineering Processes Simulation, International Conference on Education, Research and Innovation, Madrid, Spain 2009.
12. Al Nakoua, M. A. and H. El-Naas, Methane Reforming Reactions in Small Channels, International Conference on Chemical, Biological & Environmental Engineering (CBEE 2009), Singapore 2009.
13. El-Naas, M. H., Al-Zuhair, S. Abdulla, and S. Makhlouf, Phenol Bioremoval Using Spouted Bed Bioreactor, The 8^th World Congress of Chemical Engineering, Montreal 2009.
14. Nakoua, M. A. and El-Naas, M. H., GTL Feed by Catalytic Oxidation of Methane in Plate Reactor, The 1^st Annual Gas Processing Symposium, ELSEVIER, Qatar, January 10-12, 2009.
15. El-Naas, M. H. and S. Makhlouf, A Spouted Bed Bioreactor for the Biodegradation of Phenols in Refinery Wastewater, The 13^th International Biotechnology Symposium, Dalian, China, October 2008.
16. El-Naas, H., O. Chaalal, and A. H. Al-Marzouqi, CO₂ Capture through Reactions with Desalination Reject Brine, Proceedings of Clean Air 2007, Portugal, July 2-7, 2007.
17. El-Naas, H., M. Al-Marzouqi, S. A. M. Marzouk, M. Al-Zarooni, and N. Abdullatif, Characterization of the Transport of CO₂ through Membrane Contactors, Proceedings of Clean Air 2007, Portugal, July 2-7, 2007.
18. Chaalal, M. H. El-Naas, and A. H. Al-Marzouqi, A Novel Technique for Natural Gas Sweetening and Water Desalting, Proceedings of Clean Air 2007, Portugal, July 2-7, 2007.
19. Al Marzouqi, H., M. A. Abdulkarim, S. A. Marzouk, M. H. El-Naas, and N. Dabaibeh, CO₂ Removal from a Gas Stream Using Facilitated Transport Membranes, The 7^th World Congress of Chemical Engineering, Glasgow (UK), July 10-14, 2005.
20. El-Naas, M. H., A Thermodynamic Investigation of a Plasma Process for the Removal of H₂S, Proceedings of the 6^th International Conference on Technologies and Combustion for a Clean Environment, Paper 44.2, July 2001.
21. El-Naas, M. H. and A. Zekri, Application of Plasma Technology to Fracture Tight Formations, SPE Annual Technical Conference and Exhibition, Paper 71460,  New Orleans 2001.
22. Hastaoglu, M. A., H. El-Naas, and Y. G. Bolkan, Optimization of Pumping Costs for a Multi-Regional Water Distribution System, The 2^nd International Conference on Sustainability in Desert Regions, UAE, Al-Ain, November 1999.
23. El-Naas, M. H., Ajersch and R. J. Munz, Effect of Carbon Reactivity on Plasma Synthesis of Calcium Carbide, The 35^th Annual Conference of Metallurgists, Montreal, Quebec, Canada, 1996.
24. El-Naas, M. H., J. Munz and F. Ajersch, Production of Calcium Carbide in a Plasma-Jet Fluid Bed Reactor, The 12^th International Symposium on Plasma Chemistry, Minneapolis, Minnesota, USA, Vol. (2) PP. 613-618, August 1995.

Conference Presentations

1. El-Naas, M. H., T. Al-Khalid, Biotechnology in the Oil and Gas Industry: Potentials for the Treatment of Processed Water, the 17th International Biotechnology Symposium and Exhibition (IBS 2016), Melbourne, Australia, 24 – 27 October 2016.
2. Mohammad, A. F., H. El-Naas, M. I. Suleiman, and M. Al Musharfy, “Optimization of a Solvay-Based Approach for CO2 Capture,” the 6^th International Conference on Chemical Engineering and Applications (CCEA 2015), Hong Kong, August 2015
3. El-Naas, M. H., A. E. El Telib (2014) “A new approach to the biodegradation of BTEX” The 16th International Biotechnology Symposium and Exhibition – IBS 2014, September 2014, Fortaleza, Brazil.
4. Al-Khalid, T. T., H. El-Naas, Evaluating the Performance of Spouted Bed Bio-Reactor during Aerobic Biodegradation of 2, 4 Dichlorophenol, Wastewater and Biosolids Treatment and Reuse: Bridging Modeling and Experimental Studies, WBTR, June 2014, Otranto, Italy.
5. Hasan, S., H. El-Naas, Treatment of carbide slurry using electrocoagulation, Wastewater and Biosolids Treatment and Reuse: Bridging Modeling and Experimental Studies, WBTR, June 2014, Otranto, Italy.
6. El-Naas, M. H. Hameedi, M. El Gamal, A-M.  Mohamed (2014) “Carbon Sequestration through Steel-Making By-products” ADNOC International Research and Development Conference, ADRAC, 24-27^th February 2104, Abu Dhabi, UAE.
7. El-Naas, M. H., A. Acio, A. Hassan (2014) “Biodegradation of BTEX: A Novel Approach” ADNOC International Research and Development Conference, ADRAC, 24-27^th February 2014, Abu Dhabi, UAE.
8. Hamdan, S. S., H. El-Naas (2014) “Electro-coagulation for Water Purification: Potentials and Challenges” ADNOC International Research and Development Conference, ADRAC, 24-27^th February 2104, Abu Dhabi, UAE
9. Al-Khalid, T. T., H. El-Naas (2014) “Biotechnology in Oil Industry: Potential and Applications” ADNOC International Research and Development Conference, ADRAC, 24-27^th February 2104, Abu Dhabi, UAE.
10. Surkatti, R., H. El-Naas, “Experimental evaluation and modeling of the biodegradation of cresols in wastewater”, ADNOC International Research and Development Conference, ADRAC, 24-27^th February 2104, Abu Dhabi, UAE.
11. Al-Khalid, T. T., H. El-Naas, Transient Behavior in Biodegradation of 2, 4 dichlorophenol: Is it a Starvation Effect?, The 4th International Conference on Chemical Engineering and Applications, Paris, France 2013
12. Hamdan, S. S., H. El-Naas, Evaluation of an Electrocoagulation Column for the Removal of Cr(VI)from Brackish Groundwater, The 63^rd Canadian Chemical Engineering Conference, New Brunswick, Canada 2013
13. Al-Khalid, T. and H. El-Naas, Aerobic Biodegradation of Chlorophenols in a Spouted Bed Bio-Reactor (SBBR), The 62^nd Canadian Chemical Engineering Conference, Vancouver, Canada, October 2012
14. El-Naas, H. and R. Surkatti, Evaluation of the Biodegradation of P-cresol in a Spouted Bed Bio-Reactor (SBBR), The 15^th International Biotechnology Symposium, Daegu, Korea, September 2012.
15. Surkatti, R. and H. El-Naas, Biodegradation of O-cresol by Pseudomonas Putida Immobilized in Polyvinyl alcohol (PVA), The 1^st International Conference on Desalination and Environment, Abu Dhabi, UAE, November 2011.
16. Hamdan S. and H. El-Naas, Removal of Cr(VI) from Brackish Groundwater Using Electrocoagulation, The 1^st International Conference on Desalination and Environment, Abu Dhabi, UAE, November 2011.
17. El-Naas, M. H., S. Al-Zuhair, Amal Lobani, and S. Makhlouf, Treatment of Refinery Wastewater by Electrocoagulation, UAEU Research Conference, Al-Ain, 2009.
18. El-Naas, M. H., S. Al-Zuhair, and Manal Alhaija, Refinery Wastewater Treatment using BDH and Date-Pit Activated Carbons, UAEU Research Conference, Al-Ain, 2009.
19. El-Naas, H., A. H. Al-Marzouqi and O. Chaalal, CO₂ Capture and Storage through Reactions with Seawater, UAEU Specialty Symposium on Carbon Management, Al-Ain, 2009.
20. Nakoua, M. A. and H. El-Naas, Characterization of Thin Film Ni/Al₂O₃ Catalysts for Use in Plate Reactors, The 10^th UAEU Annual Research Conference, Al-Ain, April 2009
21. Al-Marzouqi, H. El-Naas, and Rami Faiz, Modeling of CO₂ Transport through Hollow Fiber Membrane Contactors, UAEU Specialty Symposium on Carbon Management, Al-Ain, 2009.
22. El-Naas, M. H., S. Al-Zuhair, and S. Makhlouf, Experimental Evaluation of a Spouted Bed Bioreactor for the Removal of Phenol from Refinery Wastewater, UAEU Research Conference, Al-Ain, 2008.
23. Al-Zuhair, , M. H. El-Naas, and H. Hassani, A Kinetic Study on Anaerobic Removal of Sulphate using Sulphate Reducing Bacteria, UAEU Research Conference,  Al-Ain, 2008.
24. El-Naas, H., O. Chaalal, and A. H. Al-Marzouqi, Management of Desalination Reject Brine through Reactions with CO₂, UAEU Research Conference, Al-Ain, 2007.
25. El-Naas, H., S. Al-Muhtaseb, M. A. Al-Zarooni, S. Abdulla, and S. Makhlouf, Assessment of a Biological Process for the Treatment of Refinery Wastewater, UAEU Research Conference, Al-Ain, 2007.
26. El-Naas, H., A. Dowiadar, A. H. Al-Marzouqi, and O. Chaalal, Evaluation of the Solubility of NaHCO₃ in High Salinity Solutions, UAEU Annual Conference, Al-Ain, 2007.
27. Al-Marzouqi, M., S. Marzouk, H. El-Naas, M. Abdulkarim, and N. Abdullatif, A Comprehensive Model for CO₂ Absorption in Membrane Contactors, UAEU Research Conference, Al-Ain, 2007.
28. Marzouk, S., M. Al-Marzouqi, H. El-Naas, M. Abdulkarim, and N. Abdullatif, CO₂ Removal from Gas Streams Using Different Hollow Fiber Membrane Contactors and Liquid Adsorbents, UAEU Research Conference, Al-Ain, 2007.
29. El-Naas, M. H., Y. Zekri, R. J. Munz, and J. Rossi, Plasma Heating: New Approach to Fracturing Tight Carbonate Formations, UAEU Research Conference, Al-Ain, 2006.
30. Al-Marzouqi, M., S. Marzouk, M. Abdulkarim, H. El-Naas, N. Abdullatif, and S. Ahmed, Selective Removal of CO₂ from Natural Gas Stream Using Membrane Contactors, UAEU Research Conference, Al-Ain, 2006.
31. Sabouni, R., Al-Tayyarri, H. Obaid, L. Murad, S. Al-Molla, M. H. El-Naas, and Mohamed Abdulkarim, Design and Simulation of a Humidification-Dehumidification Process for Seawater Desalination, UAEU Research Conference,  Al-Ain, 2006.
32. El-Naas, M. H., R. J. Munz, and A. Zekri, Plasma Heating of Tight Carbonate Formations: An Innovative Technique, AIChE Annual Conference (Paper 370a), Austin Texas, USA, November 2004.
33. Al-Qaydi, A., A. Al-Harbi, S. Basloom, N. Al-Darmaki, and H. El-Naas, Bio -sorption of Chromium from Simulated Wastewater, UAEU Research Conference, Al-Ain, 2004.
34. Al-Harbi, A., S. Basloom, N. Al-Darmaki, A. Al-Kethairi, and H. El-Naas, A Process for the Removal of Chromium from Groundwater, UAEU Research Conference, Al-Ain, 2004.
35. Al-Marzouqi, M., H. El-Naas, M. A. Abdulkarim, S. A. Marzouk, and N. Dabaibeh, Selective Removal of H₂S and CO₂ from a Gas Stream Using Facilitated Transport Membranes, UAEU Research Conference, Al-Ain, 2004.
36. El-Naas, M. H., I. Ashour, F. Abu Al-Rub, and M. Al Marzouqi, Competitive Bio-sorption of Copper, Lead & Zinc from Simulated Wastewater, UAEU Research Conference, Al-Ain, 2003.
37. Al-Marzouqi, M., H. El-Naas, M. A. Abdulkarim, S. A. Marzouk, and N. Dabaibeh, Selective Removal of H₂S and CO₂ from a Gas Stream Using Facilitated Transport Membranes, UAEU Research Conference, Al-Ain, 2003.
38. Hasan, W., M. H. El-Naas, S. Makkawi, A. Harhara, and O. Chaalal, Application of Indigenous Bio-Sorbents for the Removal of Strontium from Wastewater, UAEU Research Conference, Al-Ain, 2003.
39. Al-Marzouqi, A., H. El-Naas, H. Hassan, and I. Shehatta, Enhancement of Solubility, Stability, Dissolution Rate, and Bioavailability of Poorly Water-soluble Antifungal and Antiviral Drugs by Complexation with Cyclodextrins, UAEU Research Conference, Al-Ain, 2003.
40. Abu Al-Rub, F. A., I. Ashour, M. H. El-Naas, and F. Benyahia, Adsorption of Nickel on Immobilized Algal Biomass, The 4^th Annual UAE University Research Conference,
41. El-Naas, M. H. and A. Zekri, Plasma Stimulation of Carbonate Rocks, UAEU Research Conference, Al-Ain, 2002.
42. Hastaoglu, M. A., M. H. El-Naas, A. S. Makkawi, S. W. S. Hasan, A. M. Al-Jassmi, and A. S. Al-Ammari, Storage of Reaction History in a Single Sample in a Fluidized Bed Reactor, (Paper 197f), AIChE Annual Meeting, Reno Nevada, USA, November 2001.
43. El-Naas, M. H., A. Hastaoglu, and M. Abdulkarim, Modelling and Experimental Investigation of Gas-Solid Reactions in Fixed Bed Reactors, UAEU Research Conference, Al-Ain, 2001.
44. Hastaoglu, M. A., H. El-Naas and A. Othman, Sulfur Removal in Fluidized Bed Reactors, UAEU Research Conference, Al-Ain, 2001.
45. El-Naas, M. H., I. Ashour, M. Al-Marzouqi, A. M. O. Mohamed, Uptake of Heavy Metals by Chemical and Bio-resins, Geotechnical, Geoenvironmental Engineering and Management in Arid Lands, Al-Ain, UAE, November 2000.
46. Hilal N., M. A. Hastaoglu, M. Abdulkarim, and H. El-Naas, Simulation of a Reacting Particle in a Fluidized Bed, Research 2000,  Bath, England, January 2000.
47. El-Naas, M. H., J. Munz, and F. Ajersch, Effect of Calcium Oxide Structure on the Solid Phase Synthesis of Calcium Carbide, The 49^th Canadian Chemical Engineering Conference, Saskatoon, Canada, 1999.
48. El-Naas, M. H., J. Munz, and F. Ajersch, Plasma Synthesis of Calcium Carbide, The 46^th Canadian Chemical Engineering Conference, Kingston, Ontario, Canada, 1996.
49. El-Naas, M. H., R. J. Munz, and D. Berk, Plasma Pyrolysis of CANMET Residue, The 42^nd Canadian Chemical Engineering Conference, Toronto, Ontario, Canada, October 1992.

   iii. Invited talks

72. El-Naas, M. H., “Assessment of a New Process for CO2 Capture “, 6th TRC-JCCP/ IDEMITSU International Symposium, Abu Dhabi, , February 10-11, 2016 (Keynote)
73. El-Naas, M. H., Industrial water treatment: a Pilot Study, Industrial Water Re-use & Recycling conference, Abu Dhabi, June 7-10, 2015
74. El-Naas, M. H., Surkatti, A. R. Kadiri, Novel approaches to the treatment of refinery wastewater, The 23^rd Joint JCCP-GCC Environment Symposium, Kuwait, December 15-17, 2014.
75. El-Naas, M. H., Innovation in industrial wastewater treatment: A Case Study, Water Management in Oil and Gas industry, Abu Dhabi, UAE, June 9-10, 2014.
76. El-Naas, M. H., Sequestration of carbon dioxide using steel slag, SPE-Abu Dhabi Section, Distinguished lecturer series, Abu Dhabi, UAE, March 19, 2014.
77. El-Naas, M. H., Reduction of CO₂ emissions through reactions with desalination brine, The 4^th TRC-Idemitsu Workshop, Abu Dhabi, UAE, January 23, 2014.
78. El-Naas, M. H., A. Alhaija, and S. Al-Zuhair, Innovative Approaches to the Treatment of Refinery Wastewater, The 20^th Joint JCCP-GCC Environment Symposium, Abu Dhabi, UAE, November 2011.
79. El-Naas, M. H, Electrocoagulation for Water Treatment: Technical Aspects and Potential of Industrial Investment, The International Conference on Perspectives of Industrial Investment in the  GCC, RAK, November 2010
80. El-Naas, M. H, Carbon Dioxide Capture, The RAK Symposium on Environment Friendly Industries and Sustainable Economic Development, June 5, 2010
81. El-Naas, M. H., Exploring Innovative Approaches to the Management of Refinery Wastewater, Middle East Waste and Water Congress, Dubai, May 2008.
82. El-Naas, H., S. Al-Muhtaseb, and S. Makhlouf, Biodegradation of Organic Contaminants in Refinery Wastewater, The 4^th Joint KFUPM-JCCP Environment Symposium, Dhahran Saudi Arabia, January 2008.
83. El-Naas, H. and A. H. Al-Marzouqi, Managing Desalination Reject Brine through Reactions with CO₂, Middle East Waste and Water Congress, Dubai, May 2007.