A study on sorption properties of Cd2+ on Ariake clay for evaluating its potential use as a landfill barrier material

作者：Du YJ^*; Hayashi S

来源：Applied Clay Science, 2006, 32(1-2): 14-24.

DOI：10.1016/j.clay.2006.01.003

• Ariake clay
• barrier
• landfill
• heavy metal
• impact
• sorption
• partition coefficient

To assess the potential use of Ariake clay from Kyushu region of Japan as a landfill barrier material, the results of a series of batch tests are presented to investigate on the effects of solid-solution contact time, solid: solution ratio and pH of solution on sorption of Cd2+ and Pb2+ on the Ariake clay. The results show that in addition to the three investigated factors, solid: solution ratio seems to be the crucial controlling factor. The Freundlich sorption parameters determined from the batch tests are applied to a typical landfill site in which the Ariake clay is used as a soil barrier. The impacts of the landfill on the underlying aquifer are assessed through numerical analysis. Based on the analysis results, the significance of selecting proper solid: solution ratio for determining sorption parameters from batch tests is discussed.

• 出版日期2006-4
• 单位东南大学