Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes
The rejection of organic micropollutants, including three polycyclic aromatic hydrocarbons (PAHs) and three phthalic acid esters (PAEs), by clean and fouled nanofiltration membranes was investigated in the present study. The rejection of organic micropollutants by clean NF90 membranes varied from 87...
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| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2015/934318 |
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| author | Lifang Zhu |
| author_facet | Lifang Zhu |
| author_sort | Lifang Zhu |
| collection | DOAJ |
| description | The rejection of organic micropollutants, including three polycyclic aromatic hydrocarbons (PAHs) and three phthalic acid esters (PAEs), by clean and fouled nanofiltration membranes was investigated in the present study. The rejection of organic micropollutants by clean NF90 membranes varied from 87.9 to more than 99.9%, while that of NF270 membranes ranged from 32.1 to 92.3%. Clear time-dependence was observed for the rejection of hydrophobic micropollutants, which was attributed to the adsorption of micropollutants on the membrane. Fouling with humic acid had a negligible influence on the rejection of organic micropollutants by NF90 membranes, while considerable effects were observed with NF270 membranes, which are significantly looser than NF90 membranes. The observed enhancement in the rejection of organic micropollutants by fouled NF270 membranes was attributed to pore blocking, which was a dominating fouling mechanism for loose NF membranes. Changes in the ionic strength (from 10 to 20 mM) reduced micropollutant rejection by both fouled NF membranes, especially for the rejection of dimethyl phthalate and diethyl phthalate by NF270 membranes (from 65.8 to 25.0% for dimethyl phthalate and 75.6 to 33.3% for diethyl phthalate). |
| format | Article |
| id | doaj-art-2847593fea884918ba606357849bccd3 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-2847593fea884918ba606357849bccd32025-02-03T01:13:06ZengWileyJournal of Chemistry2090-90632090-90712015-01-01201510.1155/2015/934318934318Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration MembranesLifang Zhu0Department of Environmental Science, Zhejiang University, Hangzhou 310058, ChinaThe rejection of organic micropollutants, including three polycyclic aromatic hydrocarbons (PAHs) and three phthalic acid esters (PAEs), by clean and fouled nanofiltration membranes was investigated in the present study. The rejection of organic micropollutants by clean NF90 membranes varied from 87.9 to more than 99.9%, while that of NF270 membranes ranged from 32.1 to 92.3%. Clear time-dependence was observed for the rejection of hydrophobic micropollutants, which was attributed to the adsorption of micropollutants on the membrane. Fouling with humic acid had a negligible influence on the rejection of organic micropollutants by NF90 membranes, while considerable effects were observed with NF270 membranes, which are significantly looser than NF90 membranes. The observed enhancement in the rejection of organic micropollutants by fouled NF270 membranes was attributed to pore blocking, which was a dominating fouling mechanism for loose NF membranes. Changes in the ionic strength (from 10 to 20 mM) reduced micropollutant rejection by both fouled NF membranes, especially for the rejection of dimethyl phthalate and diethyl phthalate by NF270 membranes (from 65.8 to 25.0% for dimethyl phthalate and 75.6 to 33.3% for diethyl phthalate).http://dx.doi.org/10.1155/2015/934318 |
| spellingShingle | Lifang Zhu Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes Journal of Chemistry |
| title | Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes |
| title_full | Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes |
| title_fullStr | Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes |
| title_full_unstemmed | Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes |
| title_short | Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes |
| title_sort | rejection of organic micropollutants by clean and fouled nanofiltration membranes |
| url | http://dx.doi.org/10.1155/2015/934318 |
| work_keys_str_mv | AT lifangzhu rejectionoforganicmicropollutantsbycleanandfoulednanofiltrationmembranes |