Browsing by Author "Douani, M."

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    CONTRIBUTION OF ANTHROPIC ACTIVITIES TO THE SEAWATER POLLUTION AT THE PORT OF TENES.
    (University of Eloued جامعة الوادي, 2017-09-01) Guetarni, F.; Douani, M.; Kouadri Moustefai, S.
    The port of Ténès, located at West of Algiers, is a medium of intense anthropic activities. Its pollution was monitored using a sampling technique. The analysis of the parameters: pH, temperature, electrical conductivity and dissolved oxygen (D.O) was carried out in situ. The concentration of heavy metals has been carried out by the atomic absorption while scanning the wavelengths varying from 217.0 nm at 228.8 nm. The evolution of the nitrate and nitrite content was obtained by spectrophotometer. Their spatio-temporal profiles were obtained by the Geographic Information System (GIS) software. The high toxicity of seawater is due to the presence of lead and cadmium with concentrations exceeding 60 times the normal value (0.015 mg / l). Moreover, the deficit in D.O announces strong biological activities. This wild aggression is related to the industrial discharges in the port area.
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    The Use Of Solar Energy In The Desalination Sea Water In Agricultural Greenhouse
    (2010-01-01) Tahri, T.; Bettahar, A.; Douani, M.; Al Sulaiman Abdul-wahab, S.; Al-hinai, H.; Al Mulla, Y.
    The limited resources of fresh water in arid areas like the Middle East and North Africa MENA have led to the use of poor quality water in irrigation agriculture. These can reduce crop yield and environmental damage. Agriculture accounts for 70% of overall consumption in freshwater. Given the evaporation phenomena that occur in arid regions, this figure rises to 90%. This study focuses on the concept of combining the greenhouse with the desalination of seawater This concept is intended for small scale applications in remote areas where only saline water and solar energy are available. The main objective of this research work is to analyze the production of fresh water using solar energy in the desalination of sea water in the greenhouse. This operating system is in need of thorough study of evaporators, condensers and design of the greenhouse. Desalination, combining the greenhouse to the use of sea water while exploiting the phenomenon of condensation of water vapor in the air, seems to respond positively to the needs of agricultural irrigation