ケナフ植生による重金属抽出(2004年度神奈川大学総合理学研究所助成共同研究)

概要

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Kenaf(British great Kenaf, scientific name Hibiscus cannabinus L) is an annual plant of Malvaceae Hibiscus L. of West African origin, and is remarkable as a new pulp resource. Its ability to fix carbon dioxide is excellent because growth is rapid, and it is reported that its ability equals that of tropical forests. In addition, it is possible to use it for soil cleaning and water quality purification. This research, focussed on kenaf's high water absorption capacity from the soil and its ability., to remove heavy metals from the soil, especially lead, and to reduce ground water pollution. Kenaf was grown in Hyogo Prefectur and kenaf and sorghum were grown in the tropical simulation room in our campus. These plants were burnt to ash, and the total quantity of absorbed lead was measured by atomic absorption spectrometry. Lead absorbed from the soil by kenaf vegetation was also clarified in samples processed with nitric acid. A large amount of lead was accumulated in the wood part but not so much was accumulated in the back or the living parts of the plant. It is recommended that you should harvest to absorb the heavy metal efficiently while growing up.
神奈川大学の論文
2005-05-25