Evaluation of the potential corrosivity of groundwater using an Analytic Hierarchy Process-based index

ABSTRACT

In this study, a new index based on the Analytical Hierarchy Process, and a corrosion classification system have been proposed to evaluate the potential corrosivity of groundwater. The hierarchical structure of the index has been designed using 7 different criteria affecting the potential corrosivity of groundwater and the water analysis results. The highest weight values in the hierarchical system were calculated as 35%, 23.7% and 15.8% for SO₄^2-, CO₂, and pH, respectively. The index has been tested using the analysis results of water samples taken from 120 groundwater wells in Aksaray (Turkey). 15.8% of the groundwater samples have been classified as “strongly aggressive’. The areas classified as ‘strongly aggressive’ are located in the northwest, east, and southeast of the region. The results obtained from this study showed that the index developed to predict the potential corrosivity of groundwater gives successful and reliable results.

KEYWORDS:

• Potential corrosivity
• groundwater
• corrosivity index
• Analytic Hierarchy Process
• spatial distribution

Acknowledgements

I would like to thank the OZ-EL company, Aksaray University, and Aksaray Municipality for their support and help with fieldwork.

Disclosure statement

No potential conflict of interest was reported by the author.

Supplementary material

Supplemental data for this article can be accessed https://doi.org/10.1080/1573062X.2022.2162426

Data availability

All data generated or analyzed during this study are included in this article and its supplementary information section.

Additional information

Funding

The author received no financial support for the research, authorship, and/or publication of this article.