北京市六里屯垃圾填埋场的粘土矿物学特征及其对苯的吸附研究

本文研究了北京市海淀区六里屯垃圾填埋场中粘土层的矿物学特征及其对模拟废水中苯的吸附作用,结果表明天然粘土层中纯净粘土的含量和比表面积越大、越靠近表层、有机质含量越高,对苯的吸附率越大,其中纯净粘土的含量和比表面积对苯的吸附率均有较好的线性关系,一次线性回归的拟合优度R 2分别为0.91和0.89,但粘土层的酸碱度和阳离子交换量对苯的吸附能力影响不大。

The mineralogical properties, absorption capability of clay minerals in Liulitun sanitarylandfill of Beijing and the relations between them are discussed. The experimental results showed that thehigher the content of clay minerals in soil , the larger the surface area of clay mineral and the upper the soilposition to the earth surface, the higher the absorption of benzene of soil. The experimental results also yieldlinear relation of absorption of soil with the content of clay minerals in soil and the surface area of soilwith R 2=0.91 and 0.89 respectively. Whereas the pH value and cation exchange capacity are not related to theabsorption of benzene.