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对比研究了3种土壤(新疆砂土、粘土和东北黑土)及其被石油不同程度污染后对水中重金属离子Pb2+的吸附作用。结果表明,3种原土壤及油污土壤对Pb2+的吸附均符合Langmuir等温式;原土壤上Pb2+的饱和吸附量为黑土>>粘土>砂土;在一定范围内,砂土、粘土中石油的存在对其吸附重金属离子Pb2+的能力影响较小,而黑土对Pb2+的吸附能力则随所含石油量的增大而迅速减少。
Three kinds of soil (Xinjiang sand, clay and northeastern black soil) were comparatively studied, and their adsorption on heavy metal ions Pb2 + after they were polluted by different degrees of oil. The results showed that the adsorption of Pb2 + by three kinds of original soils and oily soils accorded with Langmuir isotherm. The saturated adsorption capacity of Pb2 + in the original soils was black soil, clay, sandy soil. In a certain range, the existence of petroleum in sand and clay Its ability to adsorb heavy metal ions Pb2 + is less affected, while the adsorption capacity of Pb2 + on black soil decreases rapidly with the increase of petroleum content.