Keynote Speech

Keynote speeches of WREM 2023


Ying Ouyang, PhD, PH

Southern Research Station, Center for Bottomland Hardwoods Research, USA

Speech Title: A Novel Method to Estimate Daily Sediment Load Based on Sparse, Limited, and Discontinuous Measured Data

Dr. Ying Ouyang is a Research Hydrologist at the Center for Bottomland Hardwoods Research, Southern Research Station, United States Department of Agricultural Forest Service with duty office located on the campus of Mississippi State University. He received B.S. from South China Agricultural University and both M.S. and Ph.D. in soil physics from Oregon State University, USA.  Over the past 30 years, Dr. Ouyang’s working experience has spanned the spectrum from basic to applied research in water resource, hydrology, soil physics, and environmental sciences.  He has actively participated in many dynamic and multidisciplinary programs, including (but not limited): (1) applied and developed watershed models (e.g., BASINS-HSPF, HAWQS, HYDSTRA, and MODFLOW) to analyze hydrological processes and pollutant loads under the changing climate; (2) applied multivariate statistics (e.g., 3D Kriging, Copula, Principal Component Analysis, and Wavelet) to detect spatial distributions and temporal trends of hydrological process and water quality; (3) employed Dynamic Data Driven Application System for real-time estimation of river water quality and tree sap flow using sensor technology and computational algorithms; and (4) developed STELLA models for simulating couple transport of water and contaminants in plant xylem system and vadose zone soil, biomass production and CO2 emission in short-rotation woody crop plantation, and constructed wetland treatment of wastewater.   He has published more than 150 refereed journal articles with 80 refereed articles as the first or sole author ( ).Recognizing his excellence in the field, Dr. Ouyang was honored with the title of Fellow of the Soil Science Society of America in 2019 ( Furthermore, he received the prestigious Robert G. Wetzel Award for Water Quality from the American Institute of Hydrology in 2021 ( Dr. Ouyang's editorial contributions extend to his role as an associate editor for the Journal of Environmental Quality in the USA for a remarkable 17 years. He has also served in editorial capacities for several other international journals. For additional details about Dr. Ouyang's professional background and contributions, one can refer to his profile on the USDA Forest Service scientist website: (

Dr. Soufiane Haddout

Department of Physics, Faculty of Science, Ibn Tofail University, Morocco.


Speech Title:Water pollution and health in developing countries: current status and future challenges

Dr., S. Haddout is researcher in the Department of Physics, Faculty of Science, Ibn Tofail University, Morocco. To date, he is the author of 2 books, 2 submitted books, published more than 50 refereed journal articles with 35 refereed articles as the first; is involved in collaborative research with 20 universities/institutions worldwide; expert reviewer with AEIC-Academic Exchange Information Centre (China); and reviewer for many project proposals from international universities; received more than 100 certificates from international conference and renowned journals; invited speaker for many international conferences. Award-2020, 2021 and 2022: Best Research Awards (i.e., Thermodynamic in estuaries; and Water shortages and pandemics in Africa, and Bi-variate and CM plotting of the Sediment Dynamic Process in the estuaries)-International Research Awards, Iceat conference…etc. Co-Chair of the scientific session of the International Conference of Coastal and Estuarine Research Federation USA; Lead-Chair of the 1st and 2nd International Conference on Climate Change and Ocean Renewable Energy (CCORE 2022-2023); Coordinator of the 1st International Round Table Webinar on A Multi-criteria decision making tool for the management of water bodies in developing countries towards climate change resilience. Lead-Chair of the scientific session of the 18th International Conference of Computational Methods in Sciences (Greece) and is a Guest Editor of Regional Studies in Marine Science, Elsevier and active reviewer of reputed journals of Elsevier, Taylor & Francis, Springer, Wiley…etc


 Prof. Dr. Hassimi Abu Hasan

   Head | Research Centre for Sustainable Process Technology (CESPRO)
  Associate Professor | Department of Chemical and Process Engineering
  Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia


Ir. Dr. Hassimi Abu Hasan is the head of Research Centre for Sustainable Process Technology (CESPRO), Universiti Kebangsaan Malaysia (UKM) and an Associate Professor in the Department of Chemical and Process Engineering. He is also associate research fellow in the Research Centre and Water Analysis (ALIR), Faculty of Science and Technology, UKM. He graduated from UKM with a Bachelor of Biochemical Engineering in August 2007 and completed his PhD degree in the same university in February 2012. He has involved in teaching for more than 10 years. He is expert in biofiltration and phytoremediation for water, wastewater and soil treatment. He is a managing committee for International Water Association (IWA) specialize group Small Water and Wastewater System (SWWS). He has been awarded Anugerah Bitara Ahli Akademik Harapan UKM 2019, Anugerah Bitara Penyelidik Harapan UKM 2017, Most Valued Reviewers for Bioresource Technology – Elsevier in the year of 2017 and 2018. He has been listed as Top 1% of reviewers in Biology & Biochemistry, and Environment/Ecology by Publons, Clarivate Analytics. In 2022, Dr. Hassimi has been recognized as the World’s Top 2% Scientists 2022 and 2023 by Elsevier. He has conducted many water treatment projects related to industry and community. He has published more than 180 article journals, and attended more than 50 national and international conferences.

Prof. Teik-Thye Lim

Environmental & Water Resources Engineering
School of Civil & Environmental Engineering
Nanyang Technological University (NTU),Republic of Singapore



Speech Title: Advanced Water Treatment in the Context of Urban Water Circularity

Dr. Teik-Thye Lim is a Professor in environmental engineering, at the School of Civil & Environmental Engineering, Nanyang Technological University (NTU), Singapore. He is a research cluster leader in the Nanyang Environment and Water Research Institute (NEWRI) at NTU. Dr. Lim’s current R&D activities focus on novel environmental technologies for water treatment and reclamation, environmental nanotechnology for pollution control, waste-to-energy, resource reclamation and environmental remediation of contaminated sites. He is the inventor of several environmental technologies aiming to provide sustainable environmental solutions to challenges facing mankind. At NTU, he has led or co-led various research projects with a total funding of over US$15 millions. Some of his inventions have resulted in 15 filed intellectual properties including PCT patents and technology licensing. He has served the water and environmental industry as a consultant, advisor, trainer, mentor to startups, technical assessor, and member of technical and working committees for industry standards and practices. He has published over 240 journal papers and book chapters, with Scopus citation count of over 18,000 and h-index of 73. Dr Lim is serving in several editorial boards of scientific journals. He is the founding editor and Executive Editor of Journal of Environmental Chemical Engineering, Elsevier, which publishes research papers on environmental and chemical science and technology. Besides contributing to the scientific communities, Prof Lim also applied his water treatment technologies to provide safe drinking water to the Asia’s developing communities.



Prof. Dezhao Liu

Dept. of

Biosystems Engineering College of Biosystems Engineering and Food Science, Zhejiang University,China

Speech Title: Optimal removal and recovery of phosphorous from aquaculture and livestock wastewater and sludge

Dr. Dezhao Liu is employed as a ZJU 100 Young Professor at College of Biosystems Engineering & Food Science, Zhejiang University. Dr. Liu received his Ph.D. degree in Biosystems Engineering from Aarhus University (Denmark) in 2013 and worked as a Post doc at Aarhus University since. Dr. Liu joined the College of Biosystems Engineering and Food Science at Zhejiang University in 2016 through ‘100 Talents Program’ from Zhejiang University. Dr. Liu’s major research activities include but not limited by ‘Environment Optimal Control and Resource Recovery for Intensive Livestock and Aquaculture Systems, Wastewater/ waste air optimal treatment and resource recovery and Odor Assessment and Control Technologies’. In recent years, Dr. Liu has published more than 60 journal articles including more than 30 first authored or corresponded authored papers. Right now Dr. Liu is in charge of two projects which were founded by the National Natural Science Foundation of China (NSFC) and National Key R&D Program of China, respectively. Dr. Liu has also participated a few large research projects as main participator. In 2012, Dr. Liu received national ‘Outstanding Scholarship for self-financed PhD students abroad’ from China. Dr. Dezhao Liu is currently served as the leader of the IWA specialist group on Odours and Volatile Emissions (2017-2019) and the Chairman for the 8th IWA Odours & VOC/Air Emissions Conference which will be held in Hangzhou, China (14-17 October, 2019). Dr.Liu also serves as the Co-chair of the Livestock Branch of Agricultural Engineering Society of China and a board member of 'Strategic Alliance for Technological Innovation of Odor Pollution Control' . Dr. Liu serves as an Editor for 'Water Science & Technology' and 'Water Supply' while also serving as a reviewer for a number of top-ranked international journals, including Environmental Science & Technology, Chemosphere, Chemical Engineering Journal, Atomospheric Environment, etc. Dr. Liu also have collaborations worldwide with researchers and professors from e.g., Aarhus University, Aalborg University, Duke University, USDA, The University of New South Wales, Ghent University, Universidade da Coruña, etc.

Dr. Peleg Astrahan

Israel oceanographic & Limnological Research, Kinneret lake laboratory

Speech Title: Monocyclic aquatic pollutants, an Overlooked Pollution Source.


Dr. Peleg Astrahan
is an Aquatic Organic Chemist at the Kinneret Limnological Laboratory, Israel Oceanographic & Limnological Research (KLL-IOLR).

The main focus of his studies deals with the relations and impact of organic components on various environments. Among these topics, he studies the origins, translocation routes, sinks, and preservation of top-priority organic pollutants such PCBs, BTEX, and PAHs. In addition, Peleg follows the secretion patterns of biotoxins by several phytoplankton groups, related to toxic blooms, and the fixation of hazardous bacteria populations in riverine environments. Peleg’s studies also focus on the chemical degradation pathways of phenolic-EDCs.


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