Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, USA.
Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
Int J Mol Sci. 2023 Jan 18;24(3):1916. doi: 10.3390/ijms24031916.
Oil-contaminated soil is one of the most concerning problems due to its potential damage to human, animals, and the environment. Nanoparticles have effectively been used to degrade oil pollution in soil in the lab and in the field for a long time. In recent years, surfactant foam and nanoparticles have shown high removal of oil pollutants from contaminated soil. This review provides an overview on the remediation of oil pollutants in soil using nanoparticles, surfactant foams, and nanoparticle-stabilized surfactant foams. In particular, the fate and transport of oil compounds in the soil, the interaction of nanoparticles and surfactant foam, the removal mechanisms of nanoparticles and various surfactant foams, the effect of some factors (e.g., soil characteristics and amount, nanoparticle properties, surfactant concentration) on remediation efficiency, and some advantages and disadvantages of these methods are evaluated. Different nanoparticles and surfactant foam can be effectively utilized for treating oil compounds in contaminated soil. The treatment efficiency is dependent on many factors. Thus, optimizing these factors in each scenario is required to achieve a high remediation rate while not causing negative effects on humans, animals, and the environment. In the future, more research on the soil types, operating cost, posttreatment process, and recycling and reuse of surfactants and nanoparticles need to be conducted.
受污染土壤是最令人关注的问题之一,因为它可能对人类、动物和环境造成潜在的危害。长期以来,纳米颗粒已被有效地用于在实验室和现场降解土壤中的石油污染。近年来,表面活性剂泡沫和纳米颗粒已显示出从污染土壤中高效去除油污染物的能力。本综述概述了使用纳米颗粒、表面活性剂泡沫和纳米颗粒稳定的表面活性剂泡沫修复土壤中石油污染物的情况。特别是,土壤中油化合物的归宿和迁移、纳米颗粒和表面活性剂泡沫的相互作用、纳米颗粒和各种表面活性剂泡沫的去除机制、一些因素(例如,土壤特性和数量、纳米颗粒特性、表面活性剂浓度)对修复效率的影响,以及这些方法的一些优点和缺点进行了评估。不同的纳米颗粒和表面活性剂泡沫可有效地用于处理污染土壤中的油类化合物。处理效率取决于许多因素。因此,需要在每种情况下优化这些因素,以实现高修复率,同时不对人类、动物和环境造成负面影响。未来,需要对土壤类型、运行成本、后处理过程以及表面活性剂和纳米颗粒的回收和再利用进行更多的研究。