Abstract
Abstract. Minimizing the precipitation of minerals onto the walls of water handling equipment presents a challenge in many industrial processes. One method to control scale formation is to prevent these minerals from growing by the use of chemical additives to process water. In this study, we have developed crosslinked vinylphosphonic acid (VPA) polymer for inhibition of calcium oxalate crystallization. VPA polymer has been synthesized by introducing N,N-Methylene bis acrylamide (MBA) as a crosslinker to investigate the influence as an additive on crystallization of calcium oxalate in aqueous solutions at 30 °C. The crystals were characterized by Scanning Electron Microscopy (SEM), Fourier Transfer Infrared Spectroscopy (FT/IR) and X-Ray diffraction (XRD) analysis. The results indicated that the initial reactant ratio (RR), [Ca2+]t/[C2O42−]t, and polymer concentration are important parameters for inhibiting of the crystallization, and for controlling size, and morphology of calcium oxalate crystals.