Abstract
Polyvinyl alcohol borate hydrogel was used due to its ability to absorb cations to remove excess cations of salinity and sodium from a number of soil samples collected from district 7 of Gonbadkavus city. The experimental data were obtained by measuring electrical conductivity, pH and the amount of sodium, potassium, magnesium and calcium ions of saturated soil extract using flame photometer and titration method at each stage of mixing hydrogel with soil. After obtaining the value of the sodium absorption ratio and exchangeable sodium percentage, it was found that these values decrease after each modification step. In the final modification stage, the soil becomes non-saline but remains sodic, and the reason for this fact is that its sodium cation content is much higher compared to other cations; hence, further modification steps are suggested to reduce the sodium content of the soil before its use for agricultural purposes. At the end, a table has been prepared which is used to compare the tolerable salinity of the seeds of different plants before and after modification.
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In this article, all work was done by Mehran Taneh Gonbadi and Dr. Qaderi. This work was done in the laboratory of Babol Noshirvani University of technology and all expenses and raw materials were prepared by the Dr Qaderi and Mehran Taneh Gonbadi.
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Tanehgonbadi, M., Qaderi, F. Investigation of the effect of initial composition of soil on the efficiency of desalination by polyvinyl alcohol borate hydrogel. Environ Earth Sci 82, 340 (2023). https://doi.org/10.1007/s12665-023-11009-8
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DOI: https://doi.org/10.1007/s12665-023-11009-8