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用于土壤调节的凝形成超吸收剂的生物降解性:基于CO2排放的动力评估

Andrey V Smagin^1,2, Nadezhda B Sadovnikova^1,2, Elena A Belyaeva²

¹Soil Science Department and Eurasian Center for Food Security, Lomonosov Moscow State University, GSP-1, Leninskie Gory, Moscow 119991, Russia.

|September 9, 2023

概括

评估土壤水的超吸收生物降解性至关重要. 使用二氧化碳排放曲线的新方法显示,堆肥提取物可以将合成超吸收性半衰期减少到一年以下,而银离子可以显著延长稳定性.

科学领域:

环境科学环境科学
聚合物科学聚合物科学
土壤科学土壤科学

背景情况:

对土壤水超吸收剂的生物降解性评估对于预测它们的环境命运和功能至关重要.
现有的方法可能无法充分考虑诸如二氧化碳在水凝结构中的溶解等因素.

研究的目的:

开发和验证一种新的方法方法,用动态二氧化碳排放曲线量化超吸收生物降解.
将新方法与生物氧需求评估进行比较,并调查影响生物降解性的因素.

主要方法:

在实验室化实验中使用PASCO仪器连续记录动态二氧化碳排放曲线.
应用原始运动模型来描述呼吸曲线并计算超吸收半衰期指标.
研究了堆肥提取物和银离子合并对生物降解性和稳定性的影响.

主要成果:

新方法揭示了二氧化碳溶解在凝结构中的重要性,这是传统评估中忽视的因素.
用堆肥提取物治疗的合成超吸收剂显示,其半衰期减少了十倍 (0.1-0.3年).
将银离子 (0.1%或10 ppm) 纳入Aquapastus复合材料中,将其半衰期延长到超过10年,超过了西方的稳定性标准.

结论:

开发的二氧化碳排放曲线方法提供了对超吸收生物降解性的更准确的评估.
堆肥提取物可以显著提高其他非生物降解合成超吸收剂的降解率.
银离子结合提供了一种可行的策略,可以在土壤应用中大大提高超吸收聚合物改善剂的稳定性和寿命.

关键词:

二氧化碳排放量排放的二氧化碳二氧化碳界面相互作用生物降解生物降解半衰期半衰期半衰期仪器仪表测量仪器仪表测量仪器仪表测量仪器仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表运动曲线的动力曲线.数学建模的数学建模土壤水超吸收剂吸收剂合成聚合物水凝是一种合成聚合物.

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