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Abstract
The paper presents the obtaining, characterization and testing of a new type of polyelectrolyte based on acrylamide (2.63 mol/L), acrylic acid (1.73 mol/L) and sodium alginate (4.63x10-3 and 9.26x10-3 mol/L), for flocculation purposes. Two types of monomeric solutions were irradiated in electron beam at room temperature and in atmospheric conditions with doses between 0.5 and 2 kGy using ALID 7 linear electron accelerator of 5.5 MeV. The potassium persulfate (9.25x10-4 mol/L) was used as reaction initiator in both types of solutions. The flocculants thus obtained were characterized using various physical and chemical methods in order to determine conversion coefficient, residual monomer content, intrinsic viscosity, grafting ratio and grafting efficiency. The flocculation efficiency was evaluated in 0.1 and 0.2 wt % blue kaolin suspension at room temperature using a standard Jar test apparatus.
Highlights
The paper presents the obtaining, characterization and testing of a new type of polyelectrolyte based on acrylamide (2.63 mol/L), acrylic acid (1.73 mol/L) and sodium alginate (4.63x10-3 and 9.26x10-3 mol/L), for flocculation purposes
The acrylamide and acrylic acid grafted on the sodium alginate backbone were evaluated through the grafting ratio (GR) and grafting efficiency (GE) expressed in % and the results are presented in figures 1 and 2
A new type of polyelectrolyte based on acrylamide, acrylic acid and sodium alginate for flocculation purposes was obtained by electron beam irradiation
Summary
The paper presents the obtaining, characterization and testing of a new type of polyelectrolyte based on acrylamide (2.63 mol/L), acrylic acid (1.73 mol/L) and sodium alginate (4.63x10-3 and 9.26x10-3 mol/L), for flocculation purposes. Sample preparation For the polyelectrolytes obtaining, two types of monomeric solutions were used as fallows: Sol I (AMDAA/Alg I) containing sodium alginate 4.63x10-3 mol/L, acrylamide 2.63 mol/L, acrylic acid 1.73 mol/L and Sol II (AMD-AA/Alg II) containing sodium alginate 9.26x10-3 mol /L, acrylamide 2.63 mol/L, acrylic acid 1.73 mol/L. In both of them, 9.25x10-4 mol/L of potassium persulfate was added as reaction initiator.
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