Fukushima Prefecture - Progress in Earthquake Debris Disposal and Soil Remediation (December 2011)
The 2011 Great East Japan Earthquake generated approximately 28 million tons of debris in Fukushima Prefecture. The cost of disposal was estimated to be approximately 37800 yen per ton, with the total scale reaching approximately 1.5 trillion yen. In addition, experiments using the rice plant "sorghum" confirmed that it can absorb radioactive cesium with high efficiency, and full-scale demonstration cultivation began in 2012; interim storage facilities will begin operating in 2020, and by 2024 the number of temporary storage sites will be reduced to approximately 150. The effectiveness of plant-based methods for removing radioactive materials was found to be limited, and a 90% reduction of cesium concentration in crops is underway, mainly through the application of potassium. Kajima Corporation, Taisei Corporation, and other companies are participating in the debris disposal process, and while progress is being made in regional reconstruction, a final disposal plan by 2045 re
mains an issue.
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