Risques professionnels liés à la manipulation du chrome au sein des tanneries modernes de la ville de Fès, Maroc

Metarfi, Yousra; Rhazi, K. El; Madani, F.Z. El; Omor, Anass; Raïs, Z.

doi:10.1016/j.respe.2018.03.319

Cited by 1 publication

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“…Industrial tanning is one of the most important sectors in Morocco's economy [1]. Consequently, the consumption of huge quantities of water during all leather processing operations and the discharge of untreated effluents leads to very serious problems, particularly on water quality and human health, and makes it one of the main polluters that influence the ecological balance negatively [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Continuous Adsorption Modeling and Fixed Bed Column Studies: Adsorption of Tannery Wastewater Pollutants Using Beach Sand

Mouhri

Merzouki²,

Belhassan³

et al. 2020

Journal of Chemistry

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is study deals with the removal of residual pollutants from tanning wastewater by continuous adsorption mechanism, using local sand as a low-cost adsorbent. e possibility of pretreating a complex tannery effluent heavily loaded with a natural material such as sand is significant. e characterization of the adsorbent before and after continuous adsorption was performed by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. Column studies were also carried out to evaluate the performance of the adsorbent and the efficiency of column adsorption. e adsorption kinetic rate seems to be strongly influenced by certain parameters such as the particle size of the material used, the withdrawal rate of the influent and the height of the adsorbent bed, and optimized parameters were found to be 63 μm, 15 ml·min − 1 , and 7 cm, respectively, and the color removal has achieved maximum values which vary between 95 and 100%. e results suggest that sand can be used as an economical adsorbent for the removal of color from the wastewater of the tanning industries.

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