Optimization of the Preparation Method of K–Selective Manganese Oxide for Assessing the Availability of Soil K - Collections

＜departmental bulletin paper＞
Optimization of the Preparation Method of K–Selective Manganese Oxide for Assessing the Availability of Soil K

Creator	Creator Name Matsuda, Ayumi Affiliation Affiliation Name Laboratory of Environmental Geochemistry, Division of Bioproduction Environmental Sciences, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
	Author PID K002755 Creator Name Mori, Yuki 森, 裕樹モリ, ユウキ Affiliation Affiliation Name Laboratory of Environmental Geochemistry, Division of Bioproduction Environmental Sciences, Department of Agro–environmental Sciences, Faculty of Agriculture, Kyushu University 九州大学大学院農学研究院環境農学部門生産環境科学講座土壌学分野
	Author PID K001559 Creator Name Wada, Shin-Ichiro 和田, 信一郎ワダ, シンイチロウ Creator Alternative Name Wada, Shinichiro Affiliation Affiliation Name Laboratory of Environmental Geochemistry, Division of Bioproduction Environmental Sciences, Department of Agro–environmental Sciences, Faculty of Agriculture, Kyushu University 九州大学大学院農学研究院環境農学部門生産環境科学講座土壌学分野
Language	English
Publisher	Faculty of Agriculture, Kyushu University
Publisher	九州大学大学院農学研究院
Date	2016-02-29
Source Title	Journal of the Faculty of Agriculture, Kyushu University
Vol	61
Issue	1
First Page	189
Last Page	193
Publication Type	Version of Record
Access Rights	open access
Crossref DOI	https://doi.org/10.5109/1564102

File	FileType	Size	Views	Description
p189	pdf	700 KB	465

PISSN	0023-6152
NCID	AA00697606
Record ID	1564102
Peer-Reviewed	Unrefereed
Subject Terms	cryptomelane
	exchangeable potassium
	non–exchangeable potassium
	soilgao
ISSN	0023-6152
NCID	AA00697606
Notes	Heating mixed solutions containing manganese sulfate, ammonium peroxodisulfate and ammonium sulfate at a molar ratio of 1:1:5 at 150°C gave NH_4–cryptomelane. The higher the starting manganese concentration, the higher the purity of the products. At a concentration of 0.5 mol/L any products other than NH_4– cryptomelane was detected. Column washing with 6 mol/L nitric acid was found to be suitable for exchanging NH_4^+ with H^+. The H–exchanged cryptomelanes were highly selective for K and the K adsorption capacity increased as the volume of nitric acid used for washing increased. The maximum adsorption capacity achieved in this study was about 800 mmol/kg.
Created Date	2016.03.10
Modified Date	2022.11.11