Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions
Diethylenetriaminepentaacetic acid (DTPA), a multi-dentate acidic chelating agent containing five carboxyl and three amine groups all capable of protonation, is a pentabasic acid. To separate minor actinide [MA(III)] and rare earth [RE(III)] elements effectively from a HNO 3 solution containing DTPA...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2007-06-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361707783432579 |
| _version_ | 1826910848197591040 |
|---|---|
| author | Anyun Zhang Chenmei Mei Yuezhou Wei Mikio Kumagai |
| author_facet | Anyun Zhang Chenmei Mei Yuezhou Wei Mikio Kumagai |
| author_sort | Anyun Zhang |
| collection | DOAJ |
| description | Diethylenetriaminepentaacetic acid (DTPA), a multi-dentate acidic chelating agent containing five carboxyl and three amine groups all capable of protonation, is a pentabasic acid. To separate minor actinide [MA(III)] and rare earth [RE(III)] elements effectively from a HNO 3 solution containing DTPA generated in the MAREC process, a functional polymeric composite impregnated with a novel macroporous silica-based diglycolamide compound, N,N,N′,N′ -tetraoctyl-3-oxapentane-1,5-diamide (TODGA), was prepared. Thus, the impregnated functional polymeric composite (TODGA/SiO 2 -P) was obtained by impregnating and immobilizing TODGA molecules in the pores of the SiO 2 -polymer (SiO 2 -P) particles (ca. 50 μm diameter) via a vacuum sucking technique. The effects of H + ions within the concentration range 0.01–3.0 M and of NO 3 − ions within the range 0.1–3.115 M on the adsorption of RE(III) ions onto TODGA/SiO 2 -P were investigated at 298 K. It was found that in the presence of 0.05 M DTPA, the DTPA species strongly affected the adsorption of RE(III) ions. The adsorption capability of TODGA/SiO 2 -P depended on the competitive reactions of RE(III) ions with two species, viz. H 4 DTPA − and H 2 DTPA 3− . The distribution coefficient (K d ) for RE(III) ions increased with increasing NO 3 − concentration, with one RE(III) ion reacting with two NO 3 − ions. The adsorption mechanism of RE(III) ions towards the TODGA/SiO 2 -P polymeric composite in HNO 3 solution containing 0.05 M DTPA was suggested as: RE 3 + + H 4 DTPA - + 2 NO 3 - + 3 TODGA / SiO 2 - P ⇋ RE ( H 4 DTPA ) ( NO 3 ) 2 ⋅ 3 TODGA / SiO 2 - P The formation of H 4 DTPA − and RE(H 4 DTPA)(NO 3 ) 2 which are both capable of adsorbing with TODGA/SiO 2 -P was the main reason why RE(III) ions exhibited such significant adsorption in the presence of 0.05 M DTPA. |
| first_indexed | 2024-03-07T18:04:21Z |
| format | Article |
| id | doaj.art-3741f33b66b241dc8b0be3ccf2599dfd |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2025-02-17T10:06:56Z |
| publishDate | 2007-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-3741f33b66b241dc8b0be3ccf2599dfd2025-01-02T02:59:03ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382007-06-012510.1260/026361707783432579Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal IonsAnyun Zhang0Chenmei Mei1Yuezhou Wei2Mikio Kumagai3 College of Materials Science and Chemical Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China College of Materials Science and Chemical Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China Nuclear Chemistry and Chemical Engineering Center, Institute of Research and Innovation, 1201 Takada, Kashiwa, Chiba 277-0861, Japan Nuclear Chemistry and Chemical Engineering Center, Institute of Research and Innovation, 1201 Takada, Kashiwa, Chiba 277-0861, JapanDiethylenetriaminepentaacetic acid (DTPA), a multi-dentate acidic chelating agent containing five carboxyl and three amine groups all capable of protonation, is a pentabasic acid. To separate minor actinide [MA(III)] and rare earth [RE(III)] elements effectively from a HNO 3 solution containing DTPA generated in the MAREC process, a functional polymeric composite impregnated with a novel macroporous silica-based diglycolamide compound, N,N,N′,N′ -tetraoctyl-3-oxapentane-1,5-diamide (TODGA), was prepared. Thus, the impregnated functional polymeric composite (TODGA/SiO 2 -P) was obtained by impregnating and immobilizing TODGA molecules in the pores of the SiO 2 -polymer (SiO 2 -P) particles (ca. 50 μm diameter) via a vacuum sucking technique. The effects of H + ions within the concentration range 0.01–3.0 M and of NO 3 − ions within the range 0.1–3.115 M on the adsorption of RE(III) ions onto TODGA/SiO 2 -P were investigated at 298 K. It was found that in the presence of 0.05 M DTPA, the DTPA species strongly affected the adsorption of RE(III) ions. The adsorption capability of TODGA/SiO 2 -P depended on the competitive reactions of RE(III) ions with two species, viz. H 4 DTPA − and H 2 DTPA 3− . The distribution coefficient (K d ) for RE(III) ions increased with increasing NO 3 − concentration, with one RE(III) ion reacting with two NO 3 − ions. The adsorption mechanism of RE(III) ions towards the TODGA/SiO 2 -P polymeric composite in HNO 3 solution containing 0.05 M DTPA was suggested as: RE 3 + + H 4 DTPA - + 2 NO 3 - + 3 TODGA / SiO 2 - P ⇋ RE ( H 4 DTPA ) ( NO 3 ) 2 ⋅ 3 TODGA / SiO 2 - P The formation of H 4 DTPA − and RE(H 4 DTPA)(NO 3 ) 2 which are both capable of adsorbing with TODGA/SiO 2 -P was the main reason why RE(III) ions exhibited such significant adsorption in the presence of 0.05 M DTPA.https://doi.org/10.1260/026361707783432579 |
| spellingShingle | Anyun Zhang Chenmei Mei Yuezhou Wei Mikio Kumagai Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions Adsorption Science & Technology |
| title | Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions |
| title_full | Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions |
| title_fullStr | Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions |
| title_full_unstemmed | Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions |
| title_short | Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions |
| title_sort | preparation of a novel macroporous silica based diglycolamide derivative impregnated polymeric composite and its adsorption mechanism for rare earth metal ions |
| url | https://doi.org/10.1260/026361707783432579 |
| work_keys_str_mv | AT anyunzhang preparationofanovelmacroporoussilicabaseddiglycolamidederivativeimpregnatedpolymericcompositeanditsadsorptionmechanismforrareearthmetalions AT chenmeimei preparationofanovelmacroporoussilicabaseddiglycolamidederivativeimpregnatedpolymericcompositeanditsadsorptionmechanismforrareearthmetalions AT yuezhouwei preparationofanovelmacroporoussilicabaseddiglycolamidederivativeimpregnatedpolymericcompositeanditsadsorptionmechanismforrareearthmetalions AT mikiokumagai preparationofanovelmacroporoussilicabaseddiglycolamidederivativeimpregnatedpolymericcompositeanditsadsorptionmechanismforrareearthmetalions |