Steam cleaning

2019-03-08 07:20:02

Spraying steam into soil contaminated by organic pollutants such as PCBs can dramatically cut the time and cost of decontamination. Instead of waiting for pollutants to percolate slowly into groundwater, researchers from Lawrence Livermore National Laboratory in California use steam’s heat to dislodge contaminants from the soil. Injecting air then triggers an oxidation reaction that renders most organic pollutants harmless. In a pilot project,