重金属汚染土壌から汚染物質を回収する高機能環境修復植物の探索(2004-2005年度神奈川大学共同研究奨励助成論文) : ケナフによるカドミウム除染の可能性

概要

論文の詳細を見る
Kenaf (Hibiscus cannabinus L.), which can grow rapidly and maintain high primary production, was examined for its ability to decontaminate cadmium ions (Cd) from polluted soil. Although its germination and growth were not affected at first, its photosynthesis dependent growth was disturbed by Cd in the soil. No growth after expanding the true leaves was observed at above 111ppm Cd. At 74.1ppm Cd, kenaf could acclimate and began to grow after a few weeks lag. The biomass increased by 2.4 times from 4 to 6 weeks after sawing. Higher accumulation rates were observed in the plant body at below 74.1ppm Cd. The rate increased to 6.4 times in the plant body at 1.48ppm Cd. Assuming the same productions of kenaf as on the soil without Cd, it could decontaminate 1.48ppm Cd from the polluted soil for ca. 16 years and could more efficiently from the soil containing lower concentrations of Cd. These results suggested the possible phytoremediation with kenaf applied to the polluted soil with lower concentrations of Cd.
神奈川大学の論文
2006-05-25