Abstract—

Saline and sodic soil sample was collected from salty beach. Polyvinyl alcohol borate hydrogel due to its cation attracting ability was utilized as an adsorbent for the removal of excess cations responsible for the salinity and sodicity of soil. Experimental data were collected before treatment and after each treatment using 1 : 2 by weight soil to water extract method. Electrical conductivity and pH were observed. The amounts of sodium, potassium, magnesium, and calcium ions were determined by flame photometry and atomic absorption spectrometry. From data it was evaluated that there is the decrease in electrical conductivity and amounts of cations after desalinating soil that was previously categorized as saline. Sodium adsorption ratio and exchangeable sodium percentage were also determined and found to decrease after treatment of soil sample with polyvinyl alcohol borate hydrogel. After treatment, soil becomes nonsaline but remains sodic. This was due to the fact that it has the higher sodium ion content in comparison with other cations. Thus, further remediation to decrease the sodicity of soil was suggested before its application for agricultural purposes.

中文翻译：

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通过聚乙烯醇硼酸盐水凝胶对土壤进行脱盐

摘要-

从盐滩收集盐碱土样品。聚乙烯醇硼酸盐水凝胶由于其阳离子吸引能力而被用作吸附剂，以除去造成土壤盐度和碱度过高的阳离子。在处理之前和每次处理之后使用重量比为1：2的土壤水提取法收集实验数据。观察到电导率和pH。钠，钾，镁和钙离子的含量通过火焰光度法和原子吸收光谱法测定。根据数据评估，对先前归类为盐水的土壤进行脱盐处理后，电导率和阳离子数量均减少。还测定了钠吸附率和可交换钠百分比，发现在用聚乙烯醇硼酸盐水凝胶处理土壤样品后，钠吸附率和可交换钠百分比降低。处理后，土壤变为非盐，但仍保持钠盐状态。这是由于与其他阳离子相比，钠离子含量更高。因此，在将其用于农业目的之前，建议进一步补救以减少土壤的碱度。