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Composite marbre/granit

Composite marbre/granit

Adel Ali Mohamed

36,68 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Química
ISBN:
9786209246173
36,68 €
IVA incluido
Disponible
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La contamination de l’eau par les métaux lourds est devenue un problème environnemental majeur, présentant de sérieux risques pour la santé publique et l’économie. Dans cette étude, un mélange de poudre de granite et de marbre provenant d’Égypte, préparé dans une proportion massique de 2:1, a été utilisé comme adsorbant pour éliminer le plomb et le cadmium d’une solution aqueuse. L’adsorbant ainsi préparé a été caractérisé par diverses techniques, telles que la diffraction des rayons X (DRX), la microscopie électronique à balayage à émission de champ (MEB, EDX), la spectroscopie infrarouge à transformée de Fourier (FTIR) et la mesure de la surface spécifique. Les taux d’adsorption maximaux du Pb2+ et du Cd2+ par l’adsorbant ont atteint respectivement 99,48 % et 99,80 %. Les résultats ont montré que l’adsorption du Pb2+ et du Cd2+ suivait l’isotherme d’adsorption de Langmuir, tandis que les études cinétiques correspondaient à un modèle du second ordre. Les paramètres optimaux d’élimination maximale du Pb2+ et du Cd2+ sur les adsorbants ont été appliqués à un échantillon d’eau réel provenant des effluents du laboratoire de l’usine Kima, démontrant une efficacité d’adsorption élevée.

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