|
|
|
|
|
11/01/2011
 Email to a friend
 Comment on this article
|
Carbon8, the company whose technology stabilises flue dust and other residues with carbon dioxide, has just issued its first £8,000 worth of commercial invoices.
 Originally revealed in Plant Engineer in March 2005, the process has now reached the point of being implemented in a continuously operating pilot plant in Brandon in Suffolk.
The plant has now produced some 200 tonnes of gravel sized nodules from incinerator ash that will be incorporated into concrete blocks.
Carbon8 commercial director Mark Orsbourn explains that the plant's main source of income is the approx £100 charged per tonne for safely disposing of incinerator waste containing heavy metals.
Typically, these come from electrical and electronic products, much of which get into household waste. Reacting with carbon dioxide, also produced by the incinerator turns leachable metal salts into carbonates, likely to remain in such a form for many millions of years.
If the same materials were to be incorporated into concrete untreated, they would not only leach out, but cause 'concrete cancer'.
During September 2010, Carbon8 took part in four demonstrations, using carbon dioxide derived from the combustion of landfill gas at North Farm Landfill, in collaboration with the Environment Agency, Kent County Council and the Technology Strategy Board, to treat a variety of wastes.
These can include biomass ash and ash from paper recycling to make engineering fill for the restoration of landfill sites. Up to 20% carbon dioxide by weight can be captured in these wastes.
|
|
| |
Author
Brian Tinham
|
| |
| |
This material is protected by SOE copyright 2012.
See Terms and Conditions.
One-off usage is permitted but bulk copying is not.
For multiple copies contact the sales team.
|
| |
|
|
| |
|