Abstract
Groundwater pollution by potentially toxic metals is an on-going issue in areas with a legacy of industrial or mining activity. Remediation of hexavalent chromium (Cr(+6)) to the less mobile and less toxic trivalent form (Cr(+3)) by chemical reduction may have the undesirable effect of mobilising other metal contaminants present in soil and groundwater. Arsenic, for example, can also be chemically reduced from the pentavalent As(+5) species, which is largely immobile, to the highly mobile trivalent As(+3) species, if a remediation process is set up with the sole purpose of addressing chromium contamination. The mobility of metal species, such as arsenic, is controlled by a wide range of chemical and bio-chemical parameters, as shown in Figure 1. This project will investigate the electro-chemical and bio-chemical environment needed to optimise remediation of mixed chromium and arsenic plumes, with an emphasis on nanoscale bio-mineralisation and bio-sorbants
| Original language | English |
|---|---|
| Publication status | Unpublished - May 2010 |
| Event | Scottish Environmental Technology Network Conference 2010 - Glasgow, United Kingdom Duration: 7 May 2010 → 7 May 2010 |
Conference
| Conference | Scottish Environmental Technology Network Conference 2010 |
|---|---|
| Country/Territory | United Kingdom |
| City | Glasgow |
| Period | 7/05/10 → 7/05/10 |
Keywords
- contaminated soils
- pollutants
- groundwater
- arsenic speciation