纳米零价铁(nZVI)是全球范围内用于污染场地修复的主要纳米材料。本研究旨在评估在污染场地的纳米修复中使用nZVI的可持续性,并确定影响在修复中使用nZVI的可持续性的因素。选择了五个试点使用nZVI的案例研究。生命周期分析工具用于评估环境,经济,社会影响,和可持续性。生命周期分析的功能单位为1.00m3的修复土壤和地下水。巴西的案例研究是最不可持续的,而美国的案例研究是最可持续的。只有功能单元的修改导致可持续性指数的变化。不同因素影响NZVI在修复中的可持续性,主要因素是过程中使用的nZVI的量。最后,这项工作大大有助于nZVI在修复中的最新可持续利用。这是对在补救中使用nZVI的可持续性进行详细和全面评估的开创性研究。通过案例分析,有可能确定影响nZVI补救生命周期可持续性的主要因素。
Nanoscale zero valent iron (nZVI) is globally the main nanomaterial used in contaminated site remediation. This study aims to evaluate the sustainability of using nZVI in the nanoremediation of contaminated sites and to determine the factors that affect the sustainability of the use of nZVI in remediation. Five
case studies of nZVI use on a pilot scale were selected. Life cycle analysis tools were used to evaluate environmental, economic, social impacts, and sustainability. The functional unit of the life cycle analyses was 1.00 m3 of remediated soil and groundwater.
Case study of Brazil was the least sustainable, while
case study of United States was the most sustainable. Only the modification of the functional unit results in variations in the sustainability index. Different factors influence the sustainability of nZVI in remediation, the main factor being the amount of nZVI used in the processes. Finally, this work contributes significantly to the state-of-the-art sustainable use of nZVI in remediation. This is a pioneering study in the detailed and comprehensive assessment of the sustainability of the use of nZVI in remediation. Through the analysis of
case studies, it is possible to determine the main factors that influence the sustainability of the nZVI remediation life cycle.