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Removal of radioactive contamination of land by sunflower plants

Yomiuri Shimbun newspaper reported that The Research and Development of Space Japan (JAXA) discovered that, if sunflowers are grown on land contaminated with radioactivity, after the flowers are harvested, radioactive concentration in the soil will decrease.

Sunflower has the ability to absorb radioactive isotope Cs to replace the Ka. Photo: thelensflare.com.
A project of planting sunflowers to remove radioactive soil around the Fukushima nuclear power plant in Japan I will be deployed this year.
JAXA's research group has collected about 300 kg of sunflower seeds, and Thailand's request, one of the many sunflower seeds produced in the world, support the project. They also called for secondary schools located within and near the 30 km radius around the Fukushima plant sunflowers I planted trees on campus.
If people are not burning part of the sunflower harvest in order to destroy them, the radioactive isotope Cs will be dispersed by smoke. So the researchers think the use of JAXA wasting gas and bacteria to withstand high temperatures to break down the trunk. Activity of the bacteria will cause 99% of the volume of sunflower stems decomposed, so that the amount of radioactive material in the trunk also decreased.
After the Chernobyl nuclear disaster on 04/26/1986, scientists have used sunflower and canola in the ground for removal of radioactive contamination in Ukraine. Radioactive cesium (Cs) have similar properties kalium (Ka), an abundant element in the chemical fertilizer. In the case of Ka in the soil is not enough, sunflowers will grow to absorb Cs.

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