Volume 43, Issue 6 pp. 1048-1058
Research Article

Evaluation of Scale and Corrosion Inhibition of Modified Polyaspartic Acid

Jianxin Chen

Corresponding Author

Jianxin Chen

Hebei University of Technology, School of Chemical Engineering and Technology, 300130 Tianjin, China

Hebei University of Technology, National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, 300130 Tianjin, China

Correspondence: Jianxin Chen ([email protected]), Jian Han ([email protected]), School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China.Search for more papers by this author
Fengjiang Chen

Fengjiang Chen

Hebei University of Technology, School of Chemical Engineering and Technology, 300130 Tianjin, China

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Jian Han

Corresponding Author

Jian Han

Hebei University of Technology, School of Chemical Engineering and Technology, 300130 Tianjin, China

Correspondence: Jianxin Chen ([email protected]), Jian Han ([email protected]), School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China.Search for more papers by this author
Min Su

Min Su

Hebei University of Technology, School of Chemical Engineering and Technology, 300130 Tianjin, China

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Yinhui Li

Yinhui Li

Hebei University of Technology, School of Chemical Engineering and Technology, 300130 Tianjin, China

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First published: 25 February 2020
Citations: 26

Abstract

Amino acid modified polyaspartic acids were evaluated as calcium-scale inhibitors. Feasibility of scale inhibition experiments was analyzed by molecular dynamics simulation and Gaussian optimization, and the scale inhibition mechanism was theoretically analyzed. Scale inhibition performance was studied by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, static scale inhibition experiments, and electrochemical performance testing, which provided an experimental basis for the molecular dynamics simulation. The experimental results showed that Arg-SA-PASP has better scale inhibition and corrosion inhibition performance than His-SA-PASP. The scale inhibition effect increased with increasing concentration. Electrochemical tests indicated that Arg-SA-PASP is an excellent scale and corrosion inhibitor.

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