Migration and transformation of Cr6+ in soil environment Xiao-Song Sun*, An-Ping Liu1,2, Xiao-Nan Sun1,2, Xing-Xing Yao1,2 The State Key Laboratory, Mechanical Transmission Chongqing University, Chongqing-400 044, China 1Department of Applied Physics, Chongqing University, Chongqing-400 030, China 2Chongqing Technology & Research Center of Contaminated Sites Remediation, Chongqing-400 030, China *E-Mail: sunxs@cqu.edu.cn
Online published on 27 March, 2014. Abstract Through the adsorption and permeation experiments, the authors explored the adsorption characteristics and permeability characteristics of the Cr6+ in different soils (sandy loam, clay loam and clay). Introduced an adoption to the soil flaps to concuss a machine, the shot solid type permeates instrument and the high velocity centrifuge to separate the pure liquid for the experiment material and method of measuring the density. The experimental results show that the adsorptions of Cr6+ are in line with Langmuir equation. The three kinds of soils saturated absorptions are 181, 203 and 242 mg/kg. We also found that would change the soil texture and increase soil permeability coefficient when it was infiltrated in soil. The results provide the basis for the governance of the chromium contaminated sites repairing and preventing the spread of contamination. Top Keywords Adsorption, Cr6+ measure, mechanical device, migration, penetration test, transformation. Top |