The principle of reedbeds is that polluted water passes through a medium full of air and bacteria, reducing pollutants by as much as 99%.
If this principle is reversed so that polluted air is pumped up through a medium full of bacteria and kept wet, you can achieve 85 to 99% reductions in air pollutants, including ammonia, nitrous oxides, sulphur dioxide and yes carbon dioxide.
The simplicity of this approach has meant no one in the UK is interested in this technology. At the same time standard filtration methods are not that wondrous either.
Any one else has experience of this
Hope its ok to write about this here
Melvyn