Roles of Microbial Activity and Anthraquinone-2,7-disulfonate as a Model of Humic Substances in Leaching of Iron from Hematite into Seawater

Aneksampant, Apichaya; Tanaka, Atsushi; Tu, Xuefei; Iwai, Hisanori; Yamamoto, Mitsuo; Nakashima, Kazunori; Fukushima, Masami

Roles of Microbial Activity and Anthraquinone-2,7-disulfonate as a Model of Humic Substances in Leaching of Iron from Hematite into Seawater

Aneksampant, Apichaya; Tanaka, Atsushi; Tu, Xuefei et al.

Analytical sciences, 2018, 34(11), 1303-1308

Permalink : https://hdl.handle.net/2115/72335

このアイテムのアクセス数:836件（2026-10-08 07:59 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
34_18P147	pdf	1.37 MB	481

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/72335
タイトル	Roles of Microbial Activity and Anthraquinone-2,7-disulfonate as a Model of Humic Substances in Leaching of Iron from Hematite into Seawater
著者	Aneksampant, Apichaya ; Tanaka, Atsushi ; Tu, Xuefei ; Iwai, Hisanori ; Yamamoto, Mitsuo ; Nakashima, Kazunori ; Fukushima, Masami
著者名 Aneksampant, Apichaya
著者名 Tanaka, Atsushi
著者名 Tu, Xuefei
著者名 Iwai, Hisanori
著者名 Yamamoto, Mitsuo
著者名 Nakashima, Kazunori
e-Rad_Researcher 40344113 著者名 Fukushima, Masami
言語	英語
キーワード	Anthraquinone-2,7-disulfonate
	barren ground
	Exiguobacterium oxidotolerans sp.
	hematite
	iron elution
	iron reduction
	seawater
発行日	2018-11
出版者	日本分析化学会
出版者	Japan Society for Analytical Chemistry
収録物名	Analytical sciences
巻(号)	34(11)
ページ	1303-1308
抄録	Fertilization with a mixture of steelmaking slag and compost can affect the supply of dissolved iron used to restore seaweed beds, however, the mechanisms of iron elution from the fertilizer are not well understood. In the present study, the microorganism was isolated from Fe-fertilizer incubated in coastal seawater for 6 months, and was identified as Exiguobacterium oxidotolerans by 16S rDNA sequencing. The iron elutability of the bacteria was proved based on the increasing of dissolved iron by incubation with Fe2O3 (hematite) under a seawater-like condition. The value of ORP was changed by inoculated of the bacteria from ca. 0 to ca. -400 mV, which is anticipated concerning to reduction of Fe. The concentration of eluted iron was largely depended on those of organic acids produced by bacteria. From the results, it was proved that E. oxidotolerans is capable of Fe reductive eluting of iron from Fe2O3 into seawater. Anthraquinone-2,7-disulfonate (AQDS), which can play as an electron acceptor/donor between microbe and insoluble Fe2O3 particles, enhanced the effect of iron bio-leaching.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	0910-6340
関連情報	PMID 30078814
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.2116/analsci.18P147