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Practical Removal of Radioactivity from Soil in Fukushima Using Immobilized Photosynthetic Bacteria Combined with Anaerobic Digestion and Lactic Acid Fermentation as Pre-Treatment

“…7) For more than 20 years, we have been studying purification (COD and phosphate and nitrate reduction) in sediment mud in Hiroshima Bay using photosynthetic bacteria 21) and lactic acid bacteria. 22) Recently, a report stated that a lactic acid bacterium, Lactobacillus casei, decomposed organic matter in sediment mud, and that the COD of the sediment mud was reduced about 30% by the addition of lactic acid bacteria over 4 weeks of static treatment, which suggests that lactic acid bacteria strongly decompose high molecular weight organic matter in the surface of sediment mud to low molecular weight organic acids and lactic acid.…”