Donnan dialysis as membrane process for nitrate removal from drinking water: Membrane structure effect

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Abstract

Nitrates are extremely soluble in water and are considered as the renown pollutants of natural water and water table. Removing them through AMX, AM3, and RPA anion exchange membranes has been studied under donnan dialysis conditions as a function of concentration, pH and the nature of the feed phase. It was observed that the AMX membrane gives the highest nitrate transport efficiency and that the optimal concentration in the selected zone was in 6.2 g/L (0.1 M) with 37.9%. It was also observed that the best pH for the concentration of 0.62 g/L is pH 10 with yield of 23%. Results are evaluated by the yield calculated with nitrates concentration detected by molecular absorption spectrometry in 212 nm.

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Ben Hamouda, S., Touati, K., & Ben Amor, M. (2017). Donnan dialysis as membrane process for nitrate removal from drinking water: Membrane structure effect. Arabian Journal of Chemistry, 10, S287–S292. https://doi.org/10.1016/j.arabjc.2012.07.035

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