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Sunflowers May Heal Fukushima’s Radioactive Soil

Sunflowers May Heal Fukushima’s Radioactive Soil

Activists are asking people to plant and grow sunflowers with a goal of decontaminating soil made radioactive in the wake of the Fukushima nuclear disaster. A group of young entrepreneurs and civil servants are asking volunteers to grow sunflowers, then send the seeds to the Fukushima area where they will be planted next year to help clean the soil of contamination.

Fast Company magazine reports that entrepreneur Shinji Handa has sold some 10,000 packets of sunflower seeds to Japanese people at a cost of $6.00 apiece to launch the project. “We will give the seeds sent back by people for free to farmers, the public sector and other groups next year,” said Handa. Besides decontaminating the soil, the organizers hope that the project will promote concern for the afflicted area, as people see a sea of yellow blooms and support the victims of the catastrophe.

Besides the entrepreneurial campaign, Japanese scientists led by a space agriculture professor have already conducted a test by growing sunflowers in the contaminated soil on farmland near the nuclear plant. On July 2 the scientists confirmed that the sunflowers had sprouted. Once the plants have grown and if it is confirmed that they have absorbed significant quantities of cesium, scientists will employ bacteria to decompose the plants, and the result will be treated as radioactive waste.

The process of extracting contaminants from the soil via plants is called phytoremediation. While animals can move away from pollutants or other toxics (if they’re lucky), plants have evolved ways to live with the toxics and eventually extract them from the soil. The downside is that the concentrated pollutants, such as radioactivity or lead, can then pass along the food chain if not disposed of properly. Sunflowers were used to suck up radioactive cesium and strontium in a pond at the Chernobyl nuclear accident site in 1994 and to remove uranium from contaminated springs near the Oak Ridge (TN) National Laboratory  in 1996.

Fungi, bacteria and plants have remarkable properties that can help clean up the messes that we humans create. While no one solution will solve the problem of irradiated soil and the struggling farmers, it’s always wise to look to nature first for the processes that can heal the land.

 

 

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Photo: By Bruce Fritz [Public domain], via Wikimedia Commons

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261 comments

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7:06PM PST on Nov 12, 2011

Wonderful..I love sunflowers!

7:24AM PDT on Oct 13, 2011

thanks

10:15AM PDT on Sep 12, 2011

What a great idea!

7:16AM PDT on Sep 11, 2011

great idea

11:06PM PDT on Aug 19, 2011

An excellent idea!

Tea T, you asked what would happen to birds who ate the seeds. Wildlife is thriving in Chernobyl, where an identical scheme was put in place. It seems that cesium and strontium do not harm other lifeforms, thankfully. :-)

2:33PM PDT on Jul 30, 2011

Hey, I will be harvesting a bunch of my sunflower seeds in approx. 6-8 weeks (I truely have a jungle of sunflowers out there!) and I would love to donate them. Where can I send them to?

8:47AM PDT on Jul 26, 2011

Interesting

9:34AM PDT on Jul 24, 2011

What happens to the birds that ingest these seeds??????

1:30AM PDT on Jul 24, 2011

Helping ourselves by introducing nature is the way!!!!

7:09PM PDT on Jul 21, 2011

Smart Growth---Sustainable Development is a land grab of private property by the United Nations. They must be stopped. Go to democratsagainstunagenda21.com

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