Geosynthetic sorption sheet --Another function of geosynthetics?

Abstract

This paper discusses a novel geosynthetics sorption sheet that provides both sorption and traditional geosynthetic functions. In particular, the geosynthetic sorption sheet facilitates both water drainage and chemical barrier function. In this paper, batch sorption tests are used to evaluate the sheet's attenuation performance. The results of soil tank tests involving a 110 x 80 x 12 cm tank are also discussed. A key finding was the higher sorbed extent of arsenate compared with arsenite. The sheet absorbed more than 80% of the arsenic when it was contacted for 15 minutes with 0.1 mg/L of arsenate. Based on the soil tank test, ground particles surrounding the sheet are more important to seepage water distribution than the sheet itself.