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タイトル: ヒ素に対する粘土及び生物による修復の可能性
その他のタイトル: Arsenic Bioavailability in Clays
著者: 田崎, 和江 link image link image
上島, 雅人
朝田, 隆二 link image link image
大野, 源広
Tazaki, Kazue
Ueshima, Masato
Asada, Ryuji
Ohno, Motohiro
発行日: 1998年12月28日
出版社(者): 日本粘土学会 = The Clay Science Society of Japan
雑誌名: 粘土科学 = Journal of the Clay Science Society of Japan (in Japanese)
ISSN: 0470-6455
巻: 38
号: 2
開始ページ: 54
終了ページ: 67
キーワード: arsenic
Scirpus lacustris L.
clayey sediments
抄録: Clayey bioremediation at Osorezan area in Shimokita Peninsula, Aomori Prefecture, is reported in this paper. The relations among river sediments, plants and bacteria to bioremediation under strong acidic condition were revealed by SEM-EDX observation and ED-XRF analyses. The clayey sediments contain a large amount of arsenic which is toxic for living things. But, algae, sickle-shaped bacteria, and Scirpus lacustris L. of vascular plant survive in this geothermal area. The algae grow in black microbial mats at pH 3.0, Eh 102 mV, and DO 8.7mg/l condition. The sickle-shaped bacteria are observed in hot spring water at 42°C. Scirpus lacustris L. of vascular plant predominantly was observed around a stream. They have been survived to obtain the ability of tolerance of toxic elements such as As, Ti and Fe. These microorganisms and lower plants of endurance against toxic elements could be useful to bioremediation at heavy metal contaminated sediments. Furthermore, sulfides and sulphur play an important role in retaining and remobilizing arsenic from contaminated sediments. Clays will scavenge the arsenic with the formation of Asmaterials.
DOI: 10.11362/jcssjnendokagaku1961.38.54
URI: http://hdl.handle.net/2297/35709
関連URI: http://www.cssj2.org/
資料種別: Journal Article
権利関係: Copyright © 日本粘土学会 Clay Science Society of Japan | 許可を得て登録
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/35709



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