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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 Fe(3)O(4) (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...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4519534/ https://www.ncbi.nlm.nih.gov/pubmed/26258169 http://dx.doi.org/10.1155/2015/903706 |
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author | Chang, Chia-Chi Tseng, Jyi-Yeong Ji, Dar-Ren Chiu, Chun-Yu Lu, De-Sheng Chang, Ching-Yuan Yuan, Min-Hao Chang, Chiung-Fen Chiou, Chyow-San Chen, Yi-Hung Shie, Je-Lueng |
author_facet | Chang, Chia-Chi Tseng, Jyi-Yeong Ji, Dar-Ren Chiu, Chun-Yu Lu, De-Sheng Chang, Ching-Yuan Yuan, Min-Hao Chang, Chiung-Fen Chiou, Chyow-San Chen, Yi-Hung Shie, Je-Lueng |
author_sort | Chang, Chia-Chi |
collection | PubMed |
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 Fe(3)O(4) (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 (pH(0)) of solution to 5, (2) no adjustment of pH(0) with value in 6.04–6.64, and (3) adjusted pH(0) = 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 | Online Article Text |
id | pubmed-4519534 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-45195342015-08-09 Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent Chang, Chia-Chi Tseng, Jyi-Yeong Ji, Dar-Ren Chiu, Chun-Yu Lu, De-Sheng Chang, Ching-Yuan Yuan, Min-Hao Chang, Chiung-Fen Chiou, Chyow-San Chen, Yi-Hung Shie, Je-Lueng ScientificWorldJournal Research Article 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 Fe(3)O(4) (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 (pH(0)) of solution to 5, (2) no adjustment of pH(0) with value in 6.04–6.64, and (3) adjusted pH(0) = 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. Hindawi Publishing Corporation 2015 2015-07-16 /pmc/articles/PMC4519534/ /pubmed/26258169 http://dx.doi.org/10.1155/2015/903706 Text en Copyright © 2015 Chia-Chi Chang et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Chang, Chia-Chi Tseng, Jyi-Yeong Ji, Dar-Ren Chiu, Chun-Yu Lu, De-Sheng Chang, Ching-Yuan Yuan, Min-Hao Chang, Chiung-Fen Chiou, Chyow-San Chen, Yi-Hung Shie, Je-Lueng Adsorption Removal of Environmental Hormones of Dimethyl Phthalate Using Novel Magnetic Adsorbent |
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 |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4519534/ https://www.ncbi.nlm.nih.gov/pubmed/26258169 http://dx.doi.org/10.1155/2015/903706 |
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