Modeling Point‐of‐Entry Radon Removal by GAC

Abstract
Results of a study which showed that an adsorption‐decay steady state is established within a granular activated carbon (GAC) bed, allowing it to be maintenance‐free for long periods of time, led to field research to develop a design model for point‐of‐entry application and the installation and monitoring of GAC technology in more than 100 homes across the United States. The research showed that with an effective GAC better than 99 percent removal of radon can be achieved.