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可回收的水改性深层水溶剂,用于从土壤中去除多重金属

Hexiang Liu¹, Jialong Lv¹, Yajun Yang¹

¹College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China.

|January 7, 2024

概括

将水添加到深度水溶剂 (DES) 中,产生了新的深度水溶剂 (DEWS),有效地从土壤中去除重金属. 一个优化的DEWS,DEWLA7,显示了高的去除率和可重复使用性,而不会损害土壤营养素.

科学领域:

环境科学环境科学
绿色化学绿色化学
土壤修复土壤的修复.

背景情况:

重金属土壤污染对环境和健康构成重大风险.
传统的整治方法在安全性和有效性方面经常面临挑战.
深度环氧溶剂 (DES) 为重金属的去除提供了一个有希望的,环保的替代品.

研究的目的:

调查三元深度水溶解剂 (DEWSs) 提高从土壤中去除重金属的潜力.
系统地评估各种DEWS的移除能力,最佳条件和机制.
评估最有效的DEWS的可重复使用性和对土壤特性的影响.

主要方法:

通过将水纳入三种不同的DES,合成和描述16种新的DEWS.
对DEWS在去除土壤中的,,铜和方面的性能进行系统测试.
清除机制的分析,包括结合,吸附和物理化学性质的变化.
评估DEWS的可重复使用性和对土壤矿物质和营养成分含量的影响.

主要成果:

添加水显著提高了基于胆化物的DESs (DEU,DELA,DEEG) 的重金属去除效率.
确定了DEWLA7的最佳条件 (DELA:H2O = 2:8),实现了Cd (43.42%),Pb (94.73%),Cu (90.72%) 和 Zn (96.44%) 的高去除率.
经过多次过处理后,DEWLA7的可重复使用性被证明是高的去除率 (37.32%-83.66%),对土壤营养素的影响最小.

结论:

三级DEWS,特别是DEWLA7,代表了土壤重金属修复的高效和环保方法.
增强的性能归因于结合,吸附和改变的物理化学特性.
DEWLA7显示出作为可重复使用,安全和经济可行的土壤清洗剂的巨大潜力.

关键词:

这里是 DESs.重金属是一种重金属.恢复恢复恢复恢复恢复土壤清洗土地清洗可持续发展可持续性可持续性

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