Biography

• Professor specializing in Environmental Engineering with an emphasis on Sanitary and Environmental Hydraulics with more than 33 years of experience in teaching at the undergraduate and graduate levels.
• Extensive experience in the planning, design, and implementation of water supply and sanitation networks and concrete and metal structures.
• Accredited Consultant for Design and Supervision of Reinforced Concrete Structural Projects.

Educational Qualification

• Ph. D., Sanitary and Environmental Hydraulics  (2003)

It was completed via a cooperative research program between Suez Canal University, Egypt, and the Kyushu Institute of Technology, Kitakyushu, Japan.

Dissertation: Flotation and Dewatering of Waste Activated Sludge Using Carbon Dioxide  

• M.Sc., Environmental Hydraulics (1997)

Suez Canal University, Port Said, Egypt Thesis: Improvement of Reliability of Water Distribution Networks

• B. Sc. Civil Engineering Department (1992)

Suez Canal University, Port Said, Egypt  Graduated top of graduating class.

Academic And Professional Experience

• Head of Civil Engineering Department, High Institute of Engineering and Technology, New Damietta, Egypt, 2010-2012.
• Head of Civil Engineering Department, Giza Engineering Institute Elmoneeb, Giza, Egypt, 2014-2020.
• Vice Dean of Giza Engineering Institute Elmoneeb, Giza, Egypt, 2018-2020.
• Manager of Laboratories and Experiments Unit, Faculty of Engineering, Port Said University, Egypt, 2021-September 2024.
• Executive manager of Engineering Research Center for Development & Technological Planning, Faculty of Engineering, port Said university, Egypt, October 2024 till now.
• Member of Faculty Council, Faculty of Engineering, Port Said University, Egypt, 2021.
• Member of Laboratories Council, Faculty of Engineering, Port Said University, Egypt, 2021-2022.

Publications

• Eteba, A., Elzahar, M. H., El-shekhiby, M. Z., & Bassyouni, M. (2026). Material selection: types of membrane materials. In Membrane Technology for Water Purification (pp. 247-281). Elsevier.
• Eteba, A., Bassyouni, M., Elzahar, M. H., & El-shekhiby, M. Z. (2025). Development and optimization of biodegradable chitosan-based nanofiltration membranes for effective textile wastewater treatment. Separation and Purification Technology, 367, 132852.
• Eteba, A., Bassyouni, M., Elzahar, M. H., & El-shekhiby, M. Z. (2025). Development of a sustainable multilayer chitosan-based nanocomposite membrane for effective removal of DB78 dye from aqueous solution. Results in Engineering, 25, 104248. https://doi.org/10.1016/j.rineng.2025.104248
• Elhady, S., Bassyouni, M., Elshikhiby, M. Z., Saleh, M. Y., & Elzahar, M. H. (2024). Advanced chitosan-based composites for sustainable removal of Congo red from textile wastewater. Discover Sustainability, 5(1). https://doi.org/10.1007/s43621-024-00349-5
• Elhady,  sarah, Bassyouni, M., Elzahar, M. H., Saleh, M. Y., & Elshikhiby,  mohamed Z. (2024). Sustainable Textile Wastewater Treatment Using Biodegradable Chitosan for High-Efficiency Dye Removal. Egyptian Journal of Chemistry, 0(0), 0–0. https://doi.org/10.21608/ejchem.2024.298212.9886
• Bassyouni, M., Eteba, A., Elzahar, M. H., & Elshikhiby,  mohamed Z. (2024). Utilization of Biodegradable Nanofiltration Membrane for Efficient Removal of Anionic Textile Dye. Egyptian Journal of Chemistry, 0(0), 0–0. https://doi.org/10.21608/ejchem.2024.296854.9846
• Elhady, S., Bassyouni, M., Elshikhiby, M. Z., Saleh, M. Y., & Elzahar, M. H. (2024). Optimization of anionic dye removal using cross-linked chitosan composite as eco-friendly bio-adsorbent. Applied Water Science, 14(7). https://doi.org/10.1007/s13201-024-02210-6
• Hamdon, R., Essa, T., Selouma, T., & ElZahar, M. (2024). Comparison Between Different Types of Organic And Inorganic Coagulants Used in Water Purification. Fayoum University Journal of Engineering, 7(2), 31–37. https://doi.org/10.21608/fuje.2024.343761
• Gamal, R., Bassyouni, M., ElZahar, M. M. H., & Saleh, M. Y. (2024). A Review of Wastewater Treatment Using Biodegradable Polymers for Dyes Removal. Earth and Environmental Sciences Library, 123–139. https://doi.org/10.1007/978-3-031-46491-1_8
• Elzahar, M. M. H., & Bassyouni, M. (2023). Removal of direct dyes from wastewater using chitosan and polyacrylamide blends. Scientific Reports, 13(1). https://doi.org/10.1038/s41598-023-42960-y.
• ElZahar, M. M., Bassyouni, M., Gomaa, M. M., El-Shekhiby, M. Z., & Saleh, M. Y. (2023, July). Utilization of Fly Ash in Wastewater Treatment: A Review. In International Work-Conference on Bioinformatics and Biomedical Engineering (pp. 207-227). Cham: Springer Nature Switzerland.
• Amin, M. M., & ElZahar, M. M. (2023). Analytical Solution for Optimum Design of Nozzle Discharge Lines Based on Hydraulic Considerations. American Journal of Innovation in Science and Engineering, 2(3), 1-10.
• ElZahar, M. M. H., & Amin, M. M. M. (2023). Optimization of Water Pipe Network and Formulation of Pumping Rate. KSCE Journal of Civil Engineering, 27(7), 2882–2890.
• ElZahar, M. M. H., & Amin, M. M. M. (2023). Recharging the Freshwater Coastal Aquifer of Sidi Kirayr Area Using Sustainable Infiltration Trenches. International Journal of Environmental Science and Development, 14(2), 125–133.
• Amin, M. M. M., & ElZahar, M. M. H. (2023). Modeling of Hydrodynamic Dispersion in the Sidi Kirayr Locality’s Coastal Unconfined Aquifer West of Alexandria, Egypt. American Journal of Environment and Climate, 2(1), 1–10.
• Sharaan, M., Lebleb, A. A., ElZahar, M. M. H., & Iskander, M. (2022). Studying the tidal-induced water circulation pattern within EL-Burullus fishing harbor, Egypt, using CMS-PTM numerical modeling. Marine Environmental Research, 180, 105726.
• Amin, M. M. M., & ElZahar, M. M. H. (2022). Economic Design of Pipe-Nozzle Discharge Lines Delivering Free Jets. International Journal of Engineering Technologies and Management Research, 9(10), 10–25.
• Hamdon, R. S. M. A., Salem, A., Ahmed, H. G. I., & ElZahar, M. M. H. (2022). Use of Chitosan for Enhancing the Process of Surface Water Purification in Egypt. International Journal of Environmental Science and Development, 13(2), 26–34.
• Sara Elhady, Mohamed Bassyouni, Ramadan A. Mansour, Medhat H. El-Zahar, Shereen Abdel-Hamid, Yasser Elhenawy, and Mamdouh Y. Saleh, "Oily Wastewater Treatment Using Polyamide Thin Film Composite Membrane Technology", Membranes, 10(5),84.
• Sarah elhady, M. Bassyouni, R. A. Mansour, Medhat H. Elzahar, Mamdouh Y. Saleh, “Developed Method for Treatment of Industrial Wastewater from Edible Oil Industry using Membrane Technology”, International Journal of Engineering and Advanced Technology (IJEAT) ISSN: 2249 – 8958, Volume-9 Issue-3, February 2020.
• EL- Dosoky SH. M., El-Zahar M. H., Saleh M.Y., "The Usage of Date Pits for Treatment of Thickened Sludge", Journal of Waste Management and Disposal, SCHOLARINA, ISSN: 2641-8827, April 25, 2019.
• M. Yousef Saleh, M. El-Zahar, S. EL- Dosoky, "The Usage of Nitrogen Gas and Alum for Sludge Dewatering", ICAPCMT 2019, International Conference on Agricultural Pollution Control, Management and Technology Conference, Venice, Italy, April 11-12, 2019.
• Mamdouh Y. Saleh, Medhat H. Elzahar, Nehal M. Ashour, "Application of Life Cycle Cost Analysis Method on Wastewater Treatment Plants in Rural Egypt", Twenty First International Water Technology Conference, June 28-29, 2018, Ismailia, Egypt.
• Mohamed Gabr, Medhat El-Zahar, “Study of the Quality of Irrigation Water in South-East El-Kantara Canal, North Sinai, Egypt”, International Journal of Environmental Science and Development, IJESD June 2018, Vol.9(6): 142-146 ISSN: 2010-0264.
• Mamdouh Y. Saleh, Medhat H. Elzahar, Moustafa H. Omran, 2017 "Industrial Wastewater Treatment Improvements Using Limestone", 4th International Conference on Environmental Studies and Research "Smart Sustainable Environment", Environmental Studies and Research Institute, Sadat City, Held in Sharm Elsheikh, Egypt, March, 27-29, 2017.
• Mamdouh Y. Saleh, Medhat H. Elzahar, Nehal M. Ashour 2016 "A Study to Distinguish Between Wastewater Treatment Plants In Rural Egypt", Port Said Engineering Research Journal, Port Said University, Port Said, Egypt, Accepted for publication, October 2016.
• Mamdouh Y. Saleh, Medhat H. Elzahar, Moustafa H. Omran, 2015 "Industrial Wastewater Treatment Improvements Using Activated Carbon", International Conference on Environmental Science and Engineering, Miami, USA, March, 10-11, 2015.
• Mamdouh Yousef Saleh, Gaber El Enany, Medhat Elzahar, Mohamed Z. Elshikhipy 2014 " Industrial Wastewater Treatment Using High Rate Activated Sludge and Alum Additive", International Journal of Environmental Science and Development, Singapore, ISSN: 2010-0264, Vol. 5, No. 6, Accepted April, 22, 2014, December, 2014.
• Mamdouh Yousef Saleh, Gaber El Enany, Medhat Elzahar, Eng. Mohamed Z. Elshikhipy, Rana Hamouda 2014 "Removal of Lead in High Rate Activated Sludge System", World Academy of Science, Engineering and Technology, Vol. 8, 2014-03-01.
• Mamdouh Yousef Saleh, Gaber El Enany, Medhat Elzahar, Mohamed Z. Elshikhipy 2014 "Use of Alum for Removal of Total dissolved Solids and Total Iron in High Rate Activated Sludge System", International Journal of Environmental Engineering Science and Technology Research Vol. 2, No. 3, March 2014, PP: 1 - 12, ISSN: 2326 – 3113.
• Mamdouh Y. Saleh, Shaymaa EL-Dosoky, Medhat Elzahar 2012 "Wastewater Treatment by Oxidation Ponds in Port Said Treatment Plant (Control of Algae)", Port Said Engineering Research Journal, Vol. 16, No. 2, September 2012, PP: 109-118, ISSN: 111-6603, September 2012, Port Said, Egypt.
• Mohamed Somaida, Yasser Hamed, Medhat Elzahar, Mahmoud Sharaan 2012"Optimizing Pumping Rate in Pipe Networks Supplied by Groundwater Sources”, KSCE Journal of Civil Engineering, South Korea, on November, 12, 2012, South Korea.
• Mohamed Somaida, Medhat Elzahar, Mahmoud Sharaan 2011"A suggestion of Optimization Process of Water Pipe Networks Design”, 2011 International Proceedings of Chemical, Biological & Environmental Engineering on Environment and Bioscience, ISSN 2010-4618, Vol. 21, pp. 68-73 IACSIT PRESS, Singapore, Presented in ICOGE, International Conference on Oil, Gas, and Environment, Cairo, Egypt, 21-22, October 2011.
• Mohamed Somaida, Medhat Elzahar, Mahmoud Sharaan 2011 "The Use of Computer Simulation and Analytical Solutions for Optimal Design of Pipe Networks Supplied from a Pumped-Groundwater Source," Port Said Engineering Research Journal, Vol. 16, No. (1), March, 2012, Port Said University, Port Said, Egypt.
• Medhat El-Zahar 2010 “Dewatering Waste Activated Sludge Using Greenhouse-gas Flotation Followed by Centrifugation,” International Journal of Environmental Science and Development (IJESD), ISSN 2010-0264, Vol. 1, No. 2, pp. 199-205.
• Medhat El-Zahar 2010 “Dewatering Waste Activated Sludge Using Greenhouse-gas Flotation Followed by Centrifugation,” International Conference of Environmental Science and Technology, (ICEST), April 23-25, 2010, Bangkok, Thailand.
• Medhat El-Zahar 2009 “Dewatering Waste Activated Sludge Using Dissolved-gas Flotation Followed by Filtration", International Water Association (IWA) publishing, Journal of Water and Climate change, ISSN: 2040-2244, Vol. 1, pp. 147-153, February 2010.
• Mamdouh Y. Salih and Medhat El-Zahar 2009 “Treatment Of Industrial Wastewater from Soap Noodles Factory By Flocculation And Flotation:  a Case Study,” Port Said Engineering Research Journal, Suez Canal University, Port Said, Egypt, Vol. 14, No.(1) March 2010.
• M. El-Shekhiby, Medhat El-Zahar and M. Salih 2006 “Effect of Surface Loading Rate on The Facultative Oxidation Ponds,” Port Said Engineering Research Journal, Suez Canal University, Port Said, Egypt.
• M. El-Shekhiby, Medhat El-Zahar and M. Salih 2006 “Effect of Depth on The Facultative Oxidation Ponds,” Port Said Engineering Research Journal, Vol. 1, March, Suez Canal University, Port Said, Egypt.
• Medhat El-Zahar and K. Fujisaki 2004 “Flotation of Waste Activated Sludge by Use of a mixture of gases”, Port Said Engineering Research Journal, Vol. 1, March, Suez Canal University, Port Said, Egypt.
• Medhat El-Zahar 2003 “Flotation and Dewatering of Waste Activated Sludge Using Carbon Dioxide”, Ph.D. Dissertation submitted to The Faculty of Engineering, Suez, Canal University in a Joint supervision system between Japan and Egypt from 1999 to 2003.
• Medhat El-Zahar and K. Fujisaki 2002 “Flotation of Waste Activated Sludge by Use of Carbon Dioxide Gas”, Proceedings of ENVIRO 2002 International Conference and Exhibition, 7-12, April, Melbourne, Australia.
• Medhat El-Zahar, M. Salih and K. Fujisaki 2001 “Basic Study of Bubble Formation in Dissolved CO2 Gas Flotation of Waste Activated Sludge”, Journal of Filtration Society, The transaction papers, Vol. 2, Issue 3, pp. 73-79, 2001-2002.
• Medhat El-Zahar, M. Salih and K. Fujisaki 2001 “Basic Study of Bubble Formation in Dissolved CO2 Gas Flotation of Waste Activated Sludge”, FILTECH EUROPA International Conference and Exhibition, Vol. I, pp. 405-412, October, Dusseldorf, Germany.
• K. Fujisaki and Medhat El-Zahar, 2001 “Simplified Model for Dissolved Gas Flotation", FILTECH EUROPA International Conference and Exhibition, Vol. I, pp. 413-420, October, Dusseldorf, Germany.
• K. Fujisaki and Medhat El-Zahar, 2001 “A Mathematical Model for the Flotation of Waste Activated Sludge" ASIAN WATERQUAL, First IWA Asia-Pacific Regional Conference, Vol. I, pp. 1001-1006, 12-15 September, Fukuoka, Japan.

• Medhat El-Zahar, M. Salih and K. Fujisaki 2001 “CO2 Gas Flotation of Waste Activated Sludge Using Weak Vacuum Pressure with Thermal Treatment”, ASIAN WATERQUAL, First IWA Asia-Pacific Regional Conference, Vol. I, pp. 995-1000, 12-15 September, Fukuoka, Japan.
• Medhat El-Zahar, M. Takaninshi, M. Salih, K. Fujisaki, and I. El-Hattab, 2000 “Experimental Studies on Flotation of Waste Activated Sludge Using Carbon Dioxide with Thermal Treatment”, Water Supply and Water Quality Conference IV, Vol. 1, pp. 649-659, 11-13 September, Krakow, Poland.
• Medhat El-Zahar, M. Salih, M. I. Balah and I. H. El-Hattab 1997 “Effect of Materials of Pipes and Age of Pipes on Water Distribution System Reliability”, Port Said Engineering Research Journal, Vol. 1, September, Suez Canal University, Port Said, Egypt.
• Medhat El-Zahar, M. Salih, M. I. Balah and I. H. El-Hattab 1997 “Improvement of Reliability of Water Distribution Network using Redundancy”, Port Said Engineering Research Journal, Vol. 1, September, Suez Canal University, Port Said, Egypt.