2017 Fiscal Year Final Research Report
Removal of harmful anion in groundwater using ternary mixed hydrous oxides
| Project/Area Number |
15K00583
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Environmental engineering and reduction of environmental burden
|
|---|
| Research Institution | Shimane University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
佐藤 利夫 島根大学, 生物資源科学部, 教授 (40170766)
|
|---|
| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Keywords | 複合含水酸化物 / 砒素 / ふっ素 / ほう素 / 地下水 / 吸着 |
|---|
| Outline of Final Research Achievements |
Arsenic adsorption capacity of the ternary mixed hydrous oxide could be improved by the simple operation of changing the composition ratio in sample containing iron. The adsorption amount of arsenite or arsenate, which indicated by distribution coefficient, was more than twice or three times respectively as high as in comparison with previous samples. When arsenate and arsenite coexisted in water, SFM preferentially adsorbed arsenite, but the adsorbed amount of arsenate did not decrease greatly. It was considered that arsenite was mononuclear monodentate complex or mononuclear bidentate complex using one adsorption site, and arsenate was adsorbed by binuclear bidentate complex using two adsorption sites. However, it differs from the adsorption mechanism of goethite shown in the previous report. It is thought that the interlayer and the amorphous Mg phase of SAM function as adsorption sites for fluoride ions, and the surface of SAM functions as a main adsorption site for boric acid.
|
| Free Research Field |
水環境保全学
|
