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Your search keyword '"Rahal, Zakaria"' showing total 6 results
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6 results on '"Rahal, Zakaria"'

1. Phytotoxicity Assessment of Oat Seeds Using Purified Water Treated with Palm Leaves and Date Pits.

Author

Rahal, Zakaria, Khechekhouche, Abderrahmane, Hamza, Chekima, Barkat, Ayoub, and Sergeevna, Smolyanichenko Alla

Subjects
PHYTOTOXICITY, WATER purification, PALMS, AGRICULTURAL wastes, PLANT growth
Abstract

This work explores the potential toxicity of agricultural waste materials, specifically date palm seeds and palm fronds, on plant growth and health. These waste materials have shown promise as bioadsorbents for water purification, but their impact on plants needs to be understood. Toxicity assessments are crucial to ensure safe utilization and prevent negative effects on agricultural systems and ecosystems. Date palm seeds and palm fronds contain chemical compounds that can have allelopathic properties and influence neighboring plant growth. Experimental methods were employed to evaluate the phytotoxic effects of these materials, including germination assays and root growth inhibition tests. The results indicate that upon adsorption of PO4, palm leaves exhibited a significant enhancement in germination, leading to a remarkable increase of up to 371%. This outcome strongly emphasizes the effectiveness of palm leaves as vegetable fertilizers, highlighting their potential in agricultural applications. These findings contribute to understanding the phytotoxic potential of agricultural waste materials and developing sustainable utilization strategies. [ABSTRACT FROM AUTHOR]

Published
2024
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5. EVALUATION OF CLIMATIC CONDITIONS FROM 1978 TO 2020 OF OUED SOUF VALLEY (SOUTHERN EAST OF ALGERIA).

Author

BARKAT, AYOUB, BOUAICHA, FOUED, RAHAL, ZAKARIA, MESTER, TAMÁS, and SZABÓ, GYÖRGY

Subjects
CLIMATE change, METEOROLOGY, METEOROLOGICAL precipitation, SOCIOECONOMICS, DROUGHTS
Abstract

In this research, a climatic synthesis was built to assess the climatic parameters of the Oued Souf Valley through the meteorological data obtained from Guemar station (airport). It was revealed that the hydrological year of Oued Souf Valley is branded by the presence of a dry period and the total absence of a wet period over the year, even during January, when it was observed to have the lowest temperature and highest precipitation, which classified it as a Saharan climate (Hyper arid). The irregularity and the scarcity of precipitation, high temperatures and extremely high evapotranspiration had significant repercussions on surface runoff and infiltration which implies a high pressure on the water resources of Oued Souf valley and may disrupt the future socioeconomic project and increase the damage of natural drought and desertification. [ABSTRACT FROM AUTHOR]

Published
2023
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6. Assessment of Complex Terminal Groundwater Aquifer for Different Use of Oued Souf Valley (Algeria) Using Multivariate Statistical Methods, Geostatistical Modeling, and Water Quality Index

Author

Barkat, Ayoub, Bouaicha, Foued, Bouteraa, Oualid, Mester, Tamás, Ata, Behnam, Balla, Dániel, Rahal, Zakaria, and Szabó, György

Subjects
WQI, Water supply for domestic and industrial purposes, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, multivariate statistical methods, water–rock interaction, geostatistics, Hydraulic engineering, TC1-978, geochemical modeling, TD201-500, complex terminal aquifer
Abstract

This research aims to assess the hydrogeochemical evolution of the groundwater in Oued souf valley for drinking and irrigation purposes. To achieve this, 49 groundwater samples from the complex terminal were examined and treated concurrently with multivariate statistical methods, geostatistical modeling and the WQI (water quality index). Focusing on the physico-chemical parameters, Q mode clustering analysis detected four major water groups, where the mineralization augmented from group 1 to group 4. The hydro-chemical type was the same, Ca-Mg-Cl-SO4 for all the groups. Calcite, dolomite, anhydrite, and gypsum would be the dominant reactions with the undersaturation of evaporates minerals, based on geochemical modeling, while the carbonate minerals are precipitating. Geostatistical analysis using ordinary Kriging demonstrated the exponential semi-variogram model fitted for EC (electrical conductivity), Ca2+ (calcium), Mg2+ (magnesium), K+ (potassium), HCO3− (bicarbonate), Cl− (chloride), and SO42− (sulfate). At the same time, the rational quadratic model was the best-fitted semi-variogram model for Na+ (sodium) and NO3− (nitrate). EC, SO42−, and NO3− have a strong spatial structure, while Ca2+, Na+, K+, and HCO3− have a moderate spatial structure. Moreover, there was a weak spatial structure for Mg2+ and Cl−. The WQI shows that CT (complex terminal groundwater aquifers) are not suitable for drinking and their quality for irrigation fluctuates from excellent to moderate quality.

Published
2021

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