Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent
Magnetic polyvinyl alcohol adsorbent M-PVAL was employed to remove and concentrate dimethyl phthalate DMP. The M-PVAL was prepared after sequential syntheses of magnetic Fe3O4 (M) and polyvinyl acetate (M-PVAC). The saturated magnetizations of M, M-PVAC, and M-PVAL are 57.2, 26.0, and 43.2 emu g−1 w...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2015/903706 |
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| author | Chia-Chi Chang Jyi-Yeong Tseng Dar-Ren Ji Chun-Yu Chiu De-Sheng Lu Ching-Yuan Chang Min-Hao Yuan Chiung-Fen Chang Chyow-San Chiou Yi-Hung Chen Je-Lueng Shie |
| author_facet | Chia-Chi Chang Jyi-Yeong Tseng Dar-Ren Ji Chun-Yu Chiu De-Sheng Lu Ching-Yuan Chang Min-Hao Yuan Chiung-Fen Chang Chyow-San Chiou Yi-Hung Chen Je-Lueng Shie |
| author_sort | Chia-Chi Chang |
| collection | DOAJ |
| description | Magnetic polyvinyl alcohol adsorbent M-PVAL was employed to remove and concentrate dimethyl phthalate DMP. The M-PVAL was prepared after sequential syntheses of magnetic Fe3O4 (M) and polyvinyl acetate (M-PVAC). The saturated magnetizations of M, M-PVAC, and M-PVAL are 57.2, 26.0, and 43.2 emu g−1 with superparamagnetism, respectively. The average size of M-PVAL by number is 0.75 μm in micro size. Adsorption experiments include three cases: (1) adjustment of initial pH (pH0) of solution to 5, (2) no adjustment of pH0 with value in 6.04–6.64, and (3) adjusted pH0 = 7. The corresponding saturated amounts of adsorption of unimolecular layer of Langmuir isotherm are 4.01, 5.21, and 4.22 mg g−1, respectively. Values of heterogeneity factor of Freundlich isotherm are 2.59, 2.19, and 2.59 which are greater than 1, revealing the favorable adsorption of DMP/M-PVAL system. Values of adsorption activation energy per mole of Dubinin-Radushkevich isotherm are, respectively, of low values of 7.04, 6.48, and 7.19 kJ mol−1, indicating the natural occurring of the adsorption process studied. The tiny size of adsorbent makes the adsorption take place easily while its superparamagnetism is beneficial for the separation and recovery of micro adsorbent from liquid by applying magnetic field after completion of adsorption. |
| format | Article |
| id | doaj-art-11444501d57c41838bca8915cacd3ea3 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-11444501d57c41838bca8915cacd3ea32025-08-20T03:54:11ZengWileyThe Scientific World Journal2356-61401537-744X2015-01-01201510.1155/2015/903706903706Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic AdsorbentChia-Chi Chang0Jyi-Yeong Tseng1Dar-Ren Ji2Chun-Yu Chiu3De-Sheng Lu4Ching-Yuan Chang5Min-Hao Yuan6Chiung-Fen Chang7Chyow-San Chiou8Yi-Hung Chen9Je-Lueng Shie10Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanDepartment of Cosmetic Science and Application, Lan-Yang Institute of Technology, Yilan 261, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanDepartment of Environmental Science and Engineering, Tunghai University, Taichung 407, TaiwanDepartment of Environmental Engineering, National I-Lan University, Yilan 260, TaiwanDepartment of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, TaiwanDepartment of Environmental Engineering, National I-Lan University, Yilan 260, TaiwanMagnetic polyvinyl alcohol adsorbent M-PVAL was employed to remove and concentrate dimethyl phthalate DMP. The M-PVAL was prepared after sequential syntheses of magnetic Fe3O4 (M) and polyvinyl acetate (M-PVAC). The saturated magnetizations of M, M-PVAC, and M-PVAL are 57.2, 26.0, and 43.2 emu g−1 with superparamagnetism, respectively. The average size of M-PVAL by number is 0.75 μm in micro size. Adsorption experiments include three cases: (1) adjustment of initial pH (pH0) of solution to 5, (2) no adjustment of pH0 with value in 6.04–6.64, and (3) adjusted pH0 = 7. The corresponding saturated amounts of adsorption of unimolecular layer of Langmuir isotherm are 4.01, 5.21, and 4.22 mg g−1, respectively. Values of heterogeneity factor of Freundlich isotherm are 2.59, 2.19, and 2.59 which are greater than 1, revealing the favorable adsorption of DMP/M-PVAL system. Values of adsorption activation energy per mole of Dubinin-Radushkevich isotherm are, respectively, of low values of 7.04, 6.48, and 7.19 kJ mol−1, indicating the natural occurring of the adsorption process studied. The tiny size of adsorbent makes the adsorption take place easily while its superparamagnetism is beneficial for the separation and recovery of micro adsorbent from liquid by applying magnetic field after completion of adsorption.http://dx.doi.org/10.1155/2015/903706 |
| spellingShingle | Chia-Chi Chang Jyi-Yeong Tseng Dar-Ren Ji Chun-Yu Chiu De-Sheng Lu Ching-Yuan Chang Min-Hao Yuan Chiung-Fen Chang Chyow-San Chiou Yi-Hung Chen Je-Lueng Shie Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent The Scientific World Journal |
| title | Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent |
| title_full | Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent |
| title_fullStr | Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent |
| title_full_unstemmed | Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent |
| title_short | Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent |
| title_sort | adsorption removal of environmental hormones of dimethyl phthalate using novel magnetic adsorbent |
| url | http://dx.doi.org/10.1155/2015/903706 |
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