This article provides more of an overview of carbon capture systems and possible interactions on air quality, but is less focused on dispersion effects and more on general issues that need to be considered.
One of the key challenges for any new technology is overcoming the lack of guidance and in some cases regulation, and it is often not clear how existing guidance and requirements may apply to new technology. Some of these issues are directly applicable to CCS. For example it is not clear whether emission limit values apply before or after the CCS process for a thermal combustion process. This is an important distinction since the CCS process removes considerable volume from the flue gas, but only a small amount of pollutants other the CO2, which means the overall concentration of other pollutants such as NOx could increase. This may affect which abatement technology would be selected.
I co-wrote this paper for the GHGT-10 conference in Amsterdam in 2010. The paper covers the potential consequences that a carbon capture solution could have on air quality if installed at an existing site.
The main influencing facture is the temperature of the flue gas release after the capture process, since this generally leaves the flue gas much cooler than when it entered the capture system, but will not necessarily have removed any of the pollutant content from that flue gas.
A further complicating factor is that it could be a significant engineering challenge to return the flue gases to the normal discharge stack in which case a new suitable stack is required. Constructing a new stack can add considerable cost to a carbon capture project.
This is a place to share some thoughts on themes loosely based around environment, technology and the future. I will try and keep those threads as far as possible. It will also be a place to digest thoughts from other places with comment.
Links to other things I have written will also be presented along with progress on other papers I am writing.
About me: environmental scientist working for a consultancy, with a strong interest in technology and how technology enables us.