Abstract
Environmental problems occurring in isolated or hardly accessible inhabited areas can be adequately addressed using membranes and membrane processes.In the present paper, the recuperative separation of aluminum ion from the aluminum sulfate-treated water through permeation using capillary composite membranes, from polypropylene with ethylene propylene diene terpolymer sulfonic acid (PP / S-EPDM) inclusions is followed by the reaction of complexation with 8-hydroxy quinoline. The installation used for studying the permeation process provides a usable surface area of 1 m2, the source phase solution volume is 3 L, and the receiving phase is 300 mL. The two phases are recirculated through the outside of the membranes (SP) and respectively through membranes (RP), by means of individual peristaltic pump that can provide flow variations between 2 and 200 mL / min by varying the intensity of the power supply. The optimal operating parameters were determined: operating time, pH and receiving phase flow, thus achieving an ionic flux (IR) above 10-11 mol / cm 2. s and a recovery factor (RF) over 90%.
Highlights
Procedures Solution preparationThe source phase (SP), represented by synthetic aqueous solution that simulates a water that has been treated with aluminium sulphate, was achieved by mmdisoosll)o),ilnvMintghgSeOepq4uur(e1im2w0oa.l3tae6rr1asgomt/ohumantotthsl)eoacfnoAdnlc2C(eSanOStrO4a)43tio((13n34o62f..11e33a41chggis// at the solubility limit of the heaviest soluble sulphate, calcium sulphate, cca. 0.3%
Environmental problems occurring in isolated or hardly accessible inhabited areas can be adequately addressed using membranes and membrane processes.In the present paper, the recuperative separation of aluminum ion from the aluminum sulfate-treated water through permeation using capillary composite membranes, from polypropylene with ethylene propylene diene terpolymer sulfonic acid (PP / S-EPDM) inclusions is followed by the reaction of complexation with 8-hydroxy quinoline
Whether its air particle removal or water treatment and purification, membrane processes can prove their usefulness because they can be applied with remarkable results for small communities [8, 10]
Summary
The source phase (SP), represented by synthetic aqueous solution that simulates a water that has been treated with aluminium sulphate, was achieved by mmdisoosll)o),ilnvMintghgSeOepq4uur(e1im2w0oa.l3tae6rr1asgomt/ohumantotthsl)eoacfnoAdnlc2C(eSanOStrO4a)43tio((13n34o62f..11e33a41chggis// at the solubility limit of the heaviest soluble sulphate, calcium sulphate, cca. 0.3%. The source phase (SP), represented by synthetic aqueous solution that simulates a water that has been treated with aluminium sulphate, was achieved by mmdisoosll)o),ilnvMintghgSeOepq4uur(e1im2w0oa.l3tae6rr1asgomt/ohumantotthsl)eoacfnoAdnlc2C(eSanOStrO4a)43tio((13n34o62f..11e33a41chggis// at the solubility limit of the heaviest soluble sulphate, calcium sulphate, cca. The stock solution is 10-3 mol / L (M) for each of the three cations studied. Permeation through membrane The installation used for studying the permeation process provides a usable surface area of 1 m2 [21], the source phase solution volume is 3 L, and the receiving phase is 300 mL. Samples for analysis are taken at pre-established time intervals using 1 mL syringes and analyzed using UV-Vis CAMSPEC spectrometer (for the receiving phase) and for result validation at atomic absorption spectrometer The results of permeation analyzes are used in terms of ionic fluxes (IF) and recovery factor (RF), according to relations (1) and (2):. Is the initial final concentration of the concentration of the ion R=(Ao-Asample)/Ao ion,
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