Prof. Dr. Yasser Zeedan El-Nahhal

Prof. Dr. Yasser Zeedan El-Nahhal

Faculty Member- Environmental Chemistry and Toxicology (Marine Pollution)
The Islamic University, Gaza & Université de Toulon, France

Department: Environment and Earth Sciences

Faculty: Science

Specialization: Environmental Chemistry and Toxicology

Host French partner: Université de Toulon - CS 60584 , 83041 TOULON CEDEX 9

French Partner: Dr Stéphane MOUNIER 

Research Domain: Marine Pollution

Research Project Title:  Marine pollution in The Mediterranean Basin: Influence of Waste Water

Research Project Purpose: This study characterized the effects of waste water on the physio chemical and biological properties of coastal area in Gaza strip Palestine .Marine sediments and sea water samples were collected waste water, sea water mixing zone at depth 0, 2.5 and 5 m, from different location. Water temperature, dissolved oxygen, pH, salinity and Total dissolved solid  (TDS)  were determined from for water sample, organic matter content, total dissolved Salts  ,electric conductivity (EC) were determined for sediments sample. Effects of waste water on the abundance marine coastal animals Crabs were determined such as sand crab, shell fish and marine rock .Dead jell fish were counted on the pollutant and non-pollutant area. Nitrate, sulfate and phosphate concentrations were determined in sea water; heavy metal contents were determined in several type of fish and marine sediments. 

Results showed significant changes in water temperature and dissolved oxygen during the year, DO contents was severally reduce in the polluted area, Salinity levels were not significantly affected between waste water, sea water mixing zone and far away .Nitrate, sulfate, phosphate levels were high in waste water/ sea water  mixing zone than samples collected from far distance. Abundance of shell fish and sand crabs increased in waste water free zones. Dead jelly fish was intensively founded in the polluted zone. Heavy metals contents were higher in fish samples from coastal area than from deep area. Abundance of marine alga were higher in waste water sea water mixing zone than from others zone. In conclusion the study provides evidence of waste water influence of waste
Effects of waste water on the physio chemical and biological properties of sea water influence costal area and on population abundance of algae, shell fish and sand crabs.

Main outputs/results: The interesting outcome of the project is that generating very valuable information on the effects of water on the marine life and on the physicochemical properties of water, sediment and biotia. Additionally, for the first time heavily metal contents were determined in fish marine weeks and sediments. These data will be a base line for future cooperation

Expected future impact: We will investigated microbiological contamination of the sea shore, water, sediment and fish samples  resulted from wastewater discharge to the costal area. We will collect information regarding human health effects on the recreational area in the contaminated zone

Future Plan: We are applying for funding in this Al-Maqdisi Call for proposal

Main Impact: The project will generate information of microbial contamination of the sea shore that will be a base line for local municipalities and ministry of health to compare the health standards in the recreation zones, and to take initiative steps toward waste water treatment plants in Gaza Strip and elsewhere. 

Sharing lectures: Master thesis emerged from this work. Thesis is available on line at: 

Publication: Two manuscripts are under preparation 

Sustainable cooperation after the visit with Palestinian researchers and/ or French researchers: We are still in touch with Prof Stephane via email.