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Development of Poly(aspartic-co-glutamic acid) Green Antiscalant for Calcium Carbonate Scale Inhibition

The performance of heat exchangers and water cooling systems is mainly affected by the major problem of calcium carbonate/sulphate based scale formation. Herein present paper, we are reporting synthesis, characterization and performance of novel aspartic-co-glutamic acid based polymer
 system as a green antiscalant. Aspartic-co-glutamic acid based polymer was developed using aspartic acid and glutamic acid as reactants and phosphoric acid as catalyst. Effect of different operating parameters viz. temperature, molar concentration of reactants, reaction time, etc. was studied
 thoroughly. The as-synthesized material was characterized by various physicochemical characterization techniques including fourier transform-Infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD) spectroscopy. The scale inhibition properties of the as-synthesised
 product were studied with respect to calcium carbonate at various pH and temperature range. Experimental results unveil that at 200 ppm concentration, the anti-scaling property of the as-synthesized material was found to be close to that of commercial antiscalant (KT-RO).