Soil Chemistry Effect on Feasibility of Cr-decontamination by Acid-Washing - 九大コレクション

＜紀要論文＞
Soil Chemistry Effect on Feasibility of Cr-decontamination by Acid-Washing

作成者	作成者名 Isoyama, Masahiro イソヤマ, マサヒロ所属機関所属機関名 Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
作成者	著者識別子 K001559 作成者名 Wada, Shin-Ichiro 和田, 信一郎ワダ, シンイチロウ所属機関所属機関名 Faculty of Agriculture, Kyushu University
本文言語	英語
出版者	Faculty of Agriculture, Kyushu University
出版者	九州大学大学院農学研究院
発行日	2006-02-01
収録物名	九州大学大学院農学研究院紀要
巻	51
号	1
開始ページ	33
終了ページ	36
出版タイプ	Version of Record
アクセス権	open access
Crossref DOI	https://doi.org/10.5109/4706
関連DOI	Journal of the Faculty of Agriculture, Kyushu University \|\| 51(1) \|\| p033-036
	九州大学大学院農学研究院紀要 \|\| 51(1) \|\| p033-036
	http://www.agr.kyushu-u.ac.jp/index.html
関連URI	Journal of the Faculty of Agriculture, Kyushu University \|\| 51(1) \|\| p033-036
	九州大学大学院農学研究院紀要 \|\| 51(1) \|\| p033-036
	http://www.agr.kyushu-u.ac.jp/index.html
関連情報	Journal of the Faculty of Agriculture, Kyushu University \|\| 51(1) \|\| p033-036
	九州大学大学院農学研究院紀要 \|\| 51(1) \|\| p033-036
	http://www.agr.kyushu-u.ac.jp/index.html

ファイル	ファイルタイプ	サイズ	閲覧回数	説明
p033	pdf	485 KB	347

PISSN	0023-6152
NCID	AA00697606
レコードID	4706
査読有無	査読無
ISSN	0023-6152
NCID	AA00697606
注記	Soil washing with sample acid jas been proven to be effective for removal of cationic heavy metals from contaminated soils. Since the obsorption of anitonic heavy metals is enhanced in acidic medium, the efficiency of acid-washing may not be guaranteed for soils that are doubly contaminated with cationic and anitonic heavy metals. To evaluate the efficiensy of acid-washing, nine soils are artifically contaminated with chromate and chromium was extracted with hydrochrolic acid of 0.5 mmol L[-1] to 1mol L[-1]. A part of spiked chromate was reduced to trivalent chromium and the remaining chromate ions were almost quantitatively extracted witht the hydrochloric acid. However, increasing hydrochloric acid aoncentration was not effective for the extraction. Possible mechanisms underlying the observed low efficiency were considerated to be the enhanced reduction in acidic solution, complexation by humic substance and obserption via caution exchange reactions. We concluded that acid-washing satisfactorily works for chromate removal in non-allophanic soils but inefficient for removal of trivalent chromim particularly from soils having high effective cation exchange capacity and organic matter content.
登録日	2009.04.22
更新日	2022.11.11