Retention and Transport of Graphene in Porous Media.

Graphene, a relatively new nanomaterial, is a single layer, two-dimensional carbon molecule. It has great potential for applications in material science, electronics, and energy systems. In anticipation of its potential for widespread application in the coming years, it is critical to assess its transport and fate behavior in the environment. In this work, miscible-displacement experiments were conducted to investigate the transport and retention of graphene in quartz sand and Vinton soil. Graphene was dispersed into water with Tween 80 solution (500 mg/l) at a concentration of 50 mg/l. Breakthrough curves were analyzed and interpreted using colloid-transport theory.