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Out Of Mind » NEW EARTH AWARENESS » NATURE & ENVIRONMENT » Exotic Australian Plants Have Superpowers That Can Be Used to Clean Up Chemical Spills

Exotic Australian Plants Have Superpowers That Can Be Used to Clean Up Chemical Spills

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Exotic Australian Plants Have Superpowers That Can Be Used to Clean Up Chemical Spills
And soak up damage after nuclear accidents.
25 NOV 2017

When a human-made disaster like a chemical spill or nuclear accident occurs, it's not unusual for the land to be ridden off.
But there's an unlikely candidate that could actually be able to survive the harsh terrain and help the area become viable again – Australian native plants.
"It's a biotechnology called 'phytoremediation' and it harnesses natural plant processes to make contaminated regions safe again," says Megan Phillips, an environmental scientist from the University of Technology Sydney.
"I'm using native Australian plants because, in general for Australia, we have strong seasonal heatwaves, nutrient-poor soils, and sporadic rainfall - a recipe for most non-native plants to struggle to survive."
Plants having a role in land recovery is already well documented from disasters like Chernobyl in 1986.
Phillips cites research showing that sunflowers were able to 'soak up' radionuclides, also known as radioactive isotopes.
The Indian Mustard plant has also been shown to be able to accumulate heavy metals from polluted soils.
So why is the team focused on Australian plants?
"Our native plants are pre-adapted to our harsher environmental conditions [and are] much more likely to endure in the long term if we plant them in contaminated regions," said Phillips.
There's also not a lot of information when it comes to Australian plants use for phytoremediation, something that the UTS researchers are trying to change.
"This is such an exciting area of research because in addition to their effectiveness as a biotechnology, it's also known that plants can decontaminate areas safely, with minimal invasive disturbance to the community and native species," Phillips said.
"It is also incredibly cost-effective. It can be up to ten times cheaper to implement compared to hiring an excavator, digging out a contaminated site and moving the waste to landfill."
But despite that, the lack of research surrounding the field has meant that phytoremediation is used far less in Australia than overseas.
"There are huge success stories already overseas with phytoremediation working at a large scale, such as former air fields and industrial sites," Phillips added.
"It's a biotechnology that has a lot of promise for real-world application, so potentially this could become part of the normal way we manage contaminated land in the future."
Phillips and her team will complete the research project in November and are planning to publish their findings.
You can see a video of their research facility below:

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