岩-土介质中Cr^(6+)、Mn^(2+)复合污染的吸附相关性研究

Correlation between Cr^(6+) and Mn^(2+) Adsorption in Rock-soil Medium with Combined Pollution

[目的]探讨岩-土介质中Cr6+、Mn2+复合污染的吸附相关性。[方法]通过单一Cr6+、Mn2+及Cr6+、Mn2+复合污染吸附试验,研究Cr6+、Mn2+复合污染的吸附规律,并采用相关分析和回归分析法分析Cr6+、Mn2+的吸附相关性。[结果]吸附试验对比分析表明,在单一和复合污染吸附试验中,Cr6+、Mn2+在吸附时间、总吸附量、吸附速率方面存在明显差异;相关分析表明,Cr6+、Mn2+呈显著正相关,通过回归分析进一步确定两者存在加和作用,即在Mn2+存在的情况下,能够增强供试土壤对Cr6+的吸附作用。[结论]该研究为今后环境治理及环境管理等提供了科学依据。

[Objective] The aim was to study the correlation between Cr6＋ and Mn2＋ adsorption in rock-soil medium with combined pollution.[Method] Combining single Cr6＋ and Mn2＋ adsorption test with combined pollution test,the adsorption laws of Cr6＋ and Mn2＋ were studied,and the correlation between Cr6＋ and Mn2＋ adsorption was analysed by using correlation analysis and regression analysis.[Result] According to the comparative analysis on adsorption tests,the adsorption time,adsorption amount and adsorption speed of Cr6＋ and Mn2＋ were obviously distinct in single adsorption test and combined adsorption test.Correlation analysis revealed that there was a significant positive correlation between Cr6＋ and Mn2＋,and there existed addition effects between Cr6＋ and Mn2＋ by regression analysis,that is,the adsorption of Cr6＋ by the test soil would be enhanced by Mn2＋.[Conclusion] The research could provide scientific references for environmental control and environment management in future.