论文部分内容阅读
通过静态吸附实验和土柱淋溶实验，研究了污灌区土壤对Ｃｒ（Ⅵ）的吸附和还原作用。结果表明，土壤对Ｃｒ（Ⅵ）的吸附符合Ｌａｎｇｍｕｉｒ吸附等温方程。进入土壤后，Ｃｒ（Ⅵ）被土壤固相组分吸附和还原为Ｃｒ（Ⅲ），从而降低了Ｃｒ（Ⅵ）对农作物的危害性
Through static adsorption experiment and soil column leaching experiment, the adsorption and reduction of Cr (Ⅵ) in sewage irrigation area were studied. The results show that the adsorption of Cr (Ⅵ) by soil accords with the Langmuir adsorption isotherm equation. After entering the soil, Cr (Ⅵ) is adsorbed and reduced to Cr (Ⅲ) by solid phase components of the soil, thereby reducing the harmfulness of Cr (Ⅵ) to crops