Arsenic stabilisation in Contaminated Soil

A feasibility study was carried out to investigate the ability of ClearEarth materials to stabilise arsenic compounds discovered on an inner city allotment site in southern England.

Elevated levels of arsenic were also found in crop vegetables taken from the site, thereby illustrating the mobile nature of the arsenic.

By simple mixing of ClearEarth products with the soil the level of arsenic leaching from the soil was reduced by between 80% and 95%.  As a consequence the accessibility of arsenic for transfer to plants is significantly reduced.