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Application of Reclaimed Sodium Polyacrylate to Increase Soil Water Retention
Clean - Soil Air Water ( IF 1.5 ) Pub Date : 2020-08-04 , DOI: 10.1002/clen.202000068
Davoud Khodadadi Dehkordi 1 , Seyed Amir Shamsnia 2
Affiliation  

The aim of this study is to investigate the impacts of salt denseness, temperature, and pH on swelling capability and the water retention capability in loam soil treated by reclaimed hydrogel. In swelling dynamic and deswelling dynamic tests, a sample of reclaimed hydrogel (0.15 g) is applied. The bag (with polymer) is drowned in 110 mL distilled water in a vessel at lab temperature. For evaluating deswelling dynamic, the swollen superabsorbent polymer (after obtaining balance swelling) is set in a vessel in lab conditions. The influence of temperature is evaluated by conducting dynamic tests at 70 °C. The influence of pH on swelling capability is evaluated by providing solutions with different pH values. The results show that the reclaimed hydrogel has a large capability to take up and store moisture and is suitable in agricultural utilization. It is technically feasible to increase the water retention capability of soil, and therefore reduce irrigation cost. Moreover, the swelling capability rises with temperature, while it declines with the rise in salt or pH denseness. The results indicate that sodium polyacrylate achieved from used diapers can be reclaimed and applied as a moisture absorbing substance in agriculture for a superior irrigation administration.

中文翻译:

再生聚丙烯酸钠在土壤保水中的应用

这项研究的目的是研究盐浓度,温度和pH值对再生水凝胶处理的壤土的溶胀能力和保水能力的影响。在溶胀动态试验和溶胀动态试验中,使用了再生水凝胶样品(0.15克)。在实验室温度下,将袋子(装有聚合物)浸入容器中的110 mL蒸馏水中。为了评估溶胀动力学,将溶胀的超吸收性聚合物(在获得平衡溶胀之后)在实验室条件下放置在容器中。通过在70°C下进行动态测试来评估温度的影响。通过提供具有不同pH值的溶液,可以评估pH对溶胀能力的影响。结果表明,再生水凝胶具有较强的吸收和储存水分的能力,适合农业利用。提高土壤的保水能力,从而降低灌溉成本在技术上是可行的。而且,溶胀能力随温度而增加,而随盐或pH密度的增加而下降。结果表明,可以回收由用过的尿布获得的聚丙烯酸钠,并将其用作农业中的吸湿物质,以实现更好的灌溉管理。
更新日期:2020-08-04
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