Design of functionalized adsorbents for simultaneous removal of fluoride and arsenite from waters
| Project/Area Number |
16F16082
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 外国 |
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| Research Field |
Earth system and resources engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
笹木 圭子 九州大学, 工学研究院, 教授 (30311525)
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| Co-Investigator(Kenkyū-buntansha) |
SUBBAIAH MUTHU PRABHU 九州大学, 工学(系)研究科(研究院), 外国人特別研究員
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| Project Period (FY) |
2016-10-07 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2018: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2017: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2016: ¥600,000 (Direct Cost: ¥600,000)
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| Keywords | ヒ素 / フッ素 / 有機金属構造体 / デンドリマー / Sucrose-derived carbon . / Oxyhydroxide materials / MOF-like materials / Arsenite / Arsenate / Fluoride / Binary solution / Adsorption / HSAB principle / adsorption / biopolymer |
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| Outline of Annual Research Achievements |
It was aimed to synthesize a modulator (benzoic acid (BA))-driven zirconium-fumaric acid (Zr-fum) metal-organic frameworks (MOF) and investigated in detail the adsorption mechanism of arsenic oxyanions (AsO43- and AsO33-) and their stability before and after the adsorption from water. The mechanism of AsO43- and AsO33- interaction on Zr-MOF was ligand-exchange and found to be the maximum uptake performance of AsO43- (1.159 mmol/g) and AsO33- (1.121 mmol/g) was obtained by the Langmuir adsorption isotherm. Likewise, it is also synthesized La-based MOFs with the linkers of benzoic acid (BA), 1,4-benzene dicarboxylic acid (BDC) and 1,3,5-benzenetricarboxylic acid (BTC). Interestingly, the ligand of BA approached La metal to form lanthanum methanoate (La(HCOO)3 instead of La-BA MOF through acid catalyst amide-hydrolysis mechanism, where, La-BDC and La-BTC as MOFs, confirmed by PXRD patterns. This is the first report to investigate the AsO43- adsorption and their dissolution behavior over La-BA, La-BDC and La-BTC in detail using the different spectroscopic methods. The maximum adsorption capacities of AsO43- obtained from the Langmuir isotherm model were found to be 2.623 mmol/g, 3.891 mmol/g and 0.280 mmol/g for La-BA, La-BDC and La-BTC, respectively. The value for La-BDC was recorded as one of the much superior, next to UiO-66, to the previously reported adsorbents for AsO43- till date. In addition, the zirconia nanoparticles (ZrO2) embedded graphene oxide dendrimer was prepared and utilized for removal of toxic AsO33- removal from water.
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| Research Progress Status |
平成30年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
平成30年度が最終年度であるため、記入しない。
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Report
(3 results)
Research Products
(9 results)
