Development of purification method of nitrate-containing wastewater using metal supported catalyst
Project/Area Number |
26410197
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Green/Environmental chemistry
|
Research Institution | Tokai University |
Principal Investigator |
MIKAMI IKKO 東海大学, 理学部, 准教授 (80433902)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
Keywords | 水処理 / 触媒 / 硝酸イオン / 還元 / 排水処理 / ギ酸 / 吸着材 / 成型体 / パラジウム |
Outline of Final Research Achievements |
Various supported bimetallic catalysts were investigated for the reduction of nitrate using formic acid as the reductant to eliminate high concentrations of nitrate (several hundred ppm or more) in wastewater. In a comparison of various metal species, Pd-In exhibited high catalytic activity for nitrate reduction with low selectivity for ammonium ions. High activity and high selectivity for dinitrogen were obtained when In/Pd ratio was relatively low (0.2) or when Pd was loaded in a highly dispersed state on support. Decomposition rate greatly decreased when sulfate ions and the like coexisted in the reaction solution. However, decrease of decomposition rate was suppressed when nitrate ion adsorbent was used as a support. For practical use, molded catalysts were prepared and evaluated by a fluidized bed apparatus, demonstrating that nitrate could be decomposed and removed satisfactorily.
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Report
(4 results)
Research Products
(12 results)