【摘要】 对黄棕壤添加蒙脱石和高岭土，以提升土壤黏土矿物含量，利用十二烷基二甲基甜菜碱(BS-12)和十六烷基三甲基溴化铵(CTMAB)复配修饰该黄棕壤得到供试土样，基于X射线衍射表征黏土矿物含量对土样结构的影响，用批处理法研究黏土矿物含量对土样吸附苯酚及其热力学特征的影响。结果表明：复配修饰增加了土样有机碳(TOC)含量，并增强了土样对苯酚的吸附能力；土样TOC含量和对苯酚的吸附能力及吸附自发性均随土样中蒙脱石含量的增加而增大，随高岭土占比的升高而降低；土样对苯酚吸附均以分配作用为主，与高岭土相比，受蒙脱石含量影响的TOC是决定其对苯酚吸附的关键因素。更多还原

【Abstract】 Kaolin was added to montmorillonite-containing yellow brown soil to increase clay mineral content, then the yellow brown soil was composite-modified with dodecyl dimethyl betaine(BS-12) and cetyltrimethylammonium bromide(CTMAB) to prepared soil test samples. The influence of clay mineral content on soil structure was characterized by X-ray diffraction. The effect of clay mineral content on the adsorption of phenol by soil and its thermodynamic characteristics was studied by batch processing method. The results showed that the composite-modification increased organic carbon(TOC) content in the soil and enhanced the adsorption capacity of soil for phenol. The content of TOC in the soil, as well as the adsorption capacity and spontaneity for phenol increased with the increase of montmorillonite content in the soil, and decreased with the increase of kaolin proportion. The adsorption of phenol by soil was mainly distributive. TOC affected by the content of montmorillonite was the key factor determining its adsorption of phenol.更多还原