Comparative performance of polyepoxysuccinic acid and polyaspartic acid on scaling inhibition by static and rapid controlled precipitation methods

► Comparison of anti-scaling performance of PESA and PASP. ► Performance evaluation by static and rapid controlled precipitation methods. ► Provide better guidance for respective applicability in cooling water system. ► Influence of dosage, temperature and Ca2+ on inhibition effect. ► SEM and XRD analyses demonstrated modification of crystalline morphology.