Study on the scale-forming mechanism of magnesium phosphate by polyepoxysuccinic acid based on solution conductivity method
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 5 December 2023
Issue publication date: 2 January 2024
Abstract
Purpose
This study aims to investigate the influence of polyepoxysuccinic acid sodium (PESA), a green antiscalant, on the nucleation, crystallization and precipitation of magnesium phosphate.
Design/methodology/approach
The conductivity method was used to investigate the maximum relative supersaturation of magnesium phosphate across various PESA dosages. Subsequently, a magnesium phosphate scale was prepared using the static scale inhibition method (GB/T16632-1996) and then analyzed via scanning electron microscopy.
Findings
The findings showed that PESA extends the induction period of magnesium phosphate crystallization, reduces crystal growth rate and elevates the solution’s relative supersaturation. Notably, PESA exerts a low dosage effect on inhibition of the magnesium phosphate scale, with the optimal dosage identified at 10 mL. Scanning electron microscopy revealed that PESA dispenses a dispersing effect on the magnesium phosphate scale, generating numerous concave, convex and deeper pores on the scale particles’ surface, and thereby significantly enhancing the surface area, especially when using an antiscalant with variable dosages.
Originality/value
This study sheds new light on the impact of PESA, a green antiscalant, on the crystallization and precipitation of magnesium phosphate, thus paving the way for the development of enhanced and eco-friendly scale inhibition strategies in future applications.
Keywords
Acknowledgements
The authors thank the National Natural Science Foundation for the Western Region of China (Approval No. 51063003 and 21664009) and the Ministry of Science and Technology of the People’s Republic of China (Approval No. 51063003 and 21664009). SQ2020IMG100001), which is used for the research and application demonstration of the “deep incubation” method of innovation and entrepreneurship in the upgraded version of mass innovation and entrepreneurship. The authors are grateful for the funding from the Western Regional Innovation Cooperation Project of the Science and Technology Department of Sichuan Province (2023YFQ0074) and the Western Regional Scientific Research Project of the State Administration of Work Safety (SichuAN-0005-2017AQ).
Citation
Feng, H., Zhao, J., Hou, J. and Feng, H. (2024), "Study on the scale-forming mechanism of magnesium phosphate by polyepoxysuccinic acid based on solution conductivity method", Anti-Corrosion Methods and Materials, Vol. 71 No. 1, pp. 74-80. https://doi.org/10.1108/ACMM-07-2023-2851
Publisher
:Emerald Publishing Limited
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