Tris(Hidroksimetil)aminometan ile modifiye edilmiş reçinenin sulu çözeltilerden bor giderilmesinde kullanılması

Boron compounds are used in the glass and ceramic industry to produce borosilicate glass, insulation fiberglass, flame retardant fiberglass, ceramic glazes, neutron absorbers, porcelain enamels, herbicides or fertilizers.Boron presents in groundwater or surface water in various locations where it occurs mainly in the form of boric acid. Common boron sources in water are urban wastewater containing detergents and cleaning products and also industrial effluents from a great number of industrial waste and diverse chemical products used in agriculture.There is no easy method available for the removal of boron from water and wastewater. One or more methods may be applied according to boron concentration in the medium. Adsorption is a very useful and economical technique at low boron concentration. In this study, glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA,10%) were copolymerized to obtain crosslinked poly GMA by using suspension polymerization method. The resin was reacted with excess of tris(hydroxymethyl)aminomethane to obtain tris(hydroxymethyl)aminomethane modified methacrylate based crosslinked bead polymers.The resin was used to remove boron from water. Therefore, loading capacity of the boron was studied depending on different boron concentration and pH. Batch kinetic sorption experiments were performed with highly diluted boric acid solution (4.9x10-3 M) to investigate the efficiency of the resin in the presence of low boron concentrations. Sorption kinetic models were applied to the resin. Loaded polymer samples, when treated with HCl, become almost boron-free.