Aniline aerofloat (AAF), a high-toxic organic flotation reagent, is widely used in mineral processing industry. However, little information on its environmental fate is available. AAF sorption to four types of agricultural soils at low concentrations (1–10 mg/L) was investigated using batch experiments. AAF sorption kinetics involved both boundary layer diffusion and intraparticle diffusion, following pseudo-second-order kinetics with equilibrium time within 120 min. Both Langmuir and Freundlich models fitted well the AAF sorption with the former better. Sorption of AAF to soils was a spontaneous and favorable physical sorption that was controlled by ion bridge effect and hydrophobic interaction that was related to van der Waals force and π-π coordination based on FTIR analyses. AAF sorption was remarkably affected by soil constituents, positively correlating with the contents of organic matter and clay. The relatively higher logK_oc values (3.53–4.66) of AAF at environmental concentrations (1–5 mg/L) imply that soils are serving as a sink of AAF from beneficiation wastewater, posing great potential risks to environment and human health.

苯胺气浮（AAF）是一种高毒性的有机浮选剂，广泛用于矿物加工行业。但是，关于其环境命运的信息很少。使用分批实验研究了AAF在四种低浓度（1-10 mg / L）的农业土壤上的吸附。AAF吸附动力学涉及边界层扩散和颗粒内扩散，遵循伪二级反应动力学，平衡时间在120分钟以内。Langmuir和Freundlich模型都很好地拟合了AAF吸附，而前者则更好。AAF对土壤的吸附是一种自发的，有利的物理吸附，受离子桥效应和与范德华力和π-π有关的疏水相互作用的控制基于FTIR分析的协调。土壤成分对AAF的吸附有显着影响，与有机物和粘土的含量呈正相关。在环境浓度（1-5 mg / L）下，AAF的logK _oc值相对较高（3.53-4.66），这表明土壤正成为选矿废水中AAF的汇聚区，对环境和人类健康构成巨大的潜在风险。