Environ Sci Pollut Res Int 2021 Sep 9. Epub 2021 Sep 9.
School of Environmental and Geographical Sciences, Shanghai Normal University, 100 Guilin Rd., Shanghai, 200234, People's Republic of China.
Nanomaterials are threatening the environment and human health, but there has been little discussion about the stability and mobility of nanoparticles (NPs) in saturated porous media at environmentally relevant concentrations of surfactants, which is a knowledge gap in exploring the fate of engineered NPs in groundwater. Therefore, the influences of the anionic surfactant (sodium dodecylbenzene sulfonate, SDBS), the cationic surfactant (cetyltrimethylammonium bromide, CTAB), and the nonionic surfactant (Tween-80) with environmentally relevant concentrations of 0, 5, 10, and 20 mg/L on nano-TiO (nTiO, negatively charged) and nano-CeO (nCeO, positively charged) transport through saturated porous media were examined by column experiments. On the whole, with increasing SDBS concentration from 0 to 20 mg/L, the concentration peak of nTiO and nCeO in effluents increased by approximately 0. Read More