SIMULTANEOUS REMOVAL OF NITRATES AND NITRITES FROM WATER BY DONNAN DIALYSIS USING DOEHLERT DESIGN
Ikhlass Marzouk Trifi, Beyram Trifi, Amira Djemal, Béchir Hamrouni
Abstract
The simultaneous removal of nitrate and nitrite from water was investigated in this study using the Donnan dialysis.First, as a preliminary study, the removal of one component in the feed compartment was performed considering different parameters such as the concentration of counter-ion in the receiver compartment, concentration of nitrate and concentration of nitrite separately in the feed compartment.Then, the removal of nitrate and nitrite simultaneously in the feed compartment was conducted through three membranes, namely AFN, AMX and ACS.The membrane that displayed the most advantageous properties in the exchange is the one that provided the highest rate of counter-ion transport from the receiver to the feed; that has been afterwards used in the optimization according to the Response Surface Methodology.