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

Polyepoxysuccinic acid (PESA) and polyaspartic acid (PASP) have proven to be green corrosion scale inhibitors given their non-nitrogenous, non-phosphorus, and biodegradable features. This study aims to provide better guidance on PESA and PASP applications in cooling water system and identify the fea...

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Bibliographic Details
Published in:Desalination 2012-10, Vol.304, p.1-10
Main Authors: Liu, Dan, Dong, Wenbo, Li, Fengting, Hui, Franck, Lédion, Jean
Format: Article
Language:English
Subjects:
Applied sciences
Biodegradability
Calcium carbonate
cooling
Cooling effects
corrosion
Corrosion inhibitors
Crystal structure
desalination
Exact sciences and technology
Inhibition
Pollution
Polyaspartic acid
Polyepoxysuccinic acid
Precipitation
Scale (corrosion)
Scale inhibitor
synergism
temperature
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Summary:Polyepoxysuccinic acid (PESA) and polyaspartic acid (PASP) have proven to be green corrosion scale inhibitors given their non-nitrogenous, non-phosphorus, and biodegradable features. This study aims to provide better guidance on PESA and PASP applications in cooling water system and identify the feasibility of their synergistic effect on scaling inhibition. The anti-scaling performance of PESA and PASP was compared using the static and rapid controlled precipitation methods. Results showed that in CaCO3 and SrSO4 control, PESA performance exceeded that of PASP. In contrast, PASP performed better than PESA in terms of CaSO4·2H2O and BaSO4 scale inhibition. The anti-scaling performance of PESA was superior to that of PASP for CaCO3, and the concentration of PESA needed to attain the same efficiency was lower than that of PASP. Increasing Ca2+ concentration or temperature reduces the inhibition effects of PESA or PASP. SEM and XRD analyses demonstrated modifications in crystalline morphology in the presence of PASP and PESA. ► 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.
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2012.07.032