Quick fix for heavy metals

Researchers at the University of Greenwich’s School of Earth Sciences have developed a process to treat heavy metal-contaminated land in hours rather than weeks. The technique uses a granular binder which reacts with metals in the contaminated soil. Carbon dioxide is then pumped into the mixture. The three components combine to produce a stable cement […]

Researchers at the University of Greenwich’s School of Earth Sciences have developed a process to treat heavy metal-contaminated land in hours rather than weeks.

The technique uses a granular binder which reacts with metals in the contaminated soil. Carbon dioxide is then pumped into the mixture. The three components combine to produce a stable cement which traps the heavy metal contaminants.

The process frees up land for housing quicker than other methods and reduces the need to build on greenfield sites.

A consortium is being formed to bring the technology to market, which should take about a year.