TX100悬浮的多壁纳米碳管在土壤中运移及其对菲迁移的影响

采用柱淋溶实验研究了TX100悬浮的多壁纳米碳管在土柱中的淋溶行为及其对菲在土壤中迁移的影响,并用胶体运移的一级动力学对流-弥散模型对纳米碳管在土柱中的迁移能力进行了估算.实验结果表明,在砂土和粉砂壤土中分别有83.5%和73.4%的多壁纳米碳管能够穿透土柱,模型估算的最远迁移距离均大于200cm,说明多壁纳米碳管有向...

Transport of TX100 suspended multi-walled carbon nanotubes (MWCNTs) and its effect on the mobility of phenanthrene in soils

Transport of TX100 suspended MWCNTs in soils as well as the effect of MWCNTs on the mobility of phenanthrene were studied by leaching experiments. The results showed that 83.5% and 73.4% of MWCNTs was breakthrough in sandy and silt sandy loam soils, respectively. The estimated potential transport distances of MWCNTs in the tested two soils were more than 200 cm, indicating the potential risks to deep soil layers of MWCNTs in these soils. The mobility of phenanthrene in soils were significantly enhanced by MWCNTs. MWCNTs-bound phenanthrene was the main transportation form for sandy soil, while it was the sole form for silt sandy loam soil. Phenanthrene was partially desorbed from MWCNTs during transport and an increase in sorption capacities of soils for phenanthrene induced an enhancement in desorption rate.