High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation
The increasing occurrence of steroidal hormone micropollutant in the aquatic environment and their associated consequences have caused serious environmental concerns globally. Adsorptive removal of hormonal pollutants using polymeric membranes has been suggested but information on their performance...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
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2022
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| Online Access: | https://hdl.handle.net/10356/163009 |
| _version_ | 1811690171703230464 |
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| author | Goh, J. Y. Goh, K. S. Yip, Y. M. Ng, C. K. |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Goh, J. Y. Goh, K. S. Yip, Y. M. Ng, C. K. |
| author_sort | Goh, J. Y. |
| collection | NTU |
| description | The increasing occurrence of steroidal hormone micropollutant in the aquatic environment and their associated consequences have caused serious environmental concerns globally. Adsorptive removal of hormonal pollutants using polymeric membranes has been suggested but information on their performance in various environmental conditions is lacking. In this study, we examined the effect of salinity on the performance of polyethersulfone (PES) membrane to remove synthetic hormone 17α-ethinyl estradiol (EE2) from water. Our results show that an increase of salinity from 0 to 3% results in higher retention of EE2 onto PES membrane from 79.3 to 98.7%. The experimental results fit the Freundlich isotherm model better as compared to the Langmuir model. The Freundlich parameters n and Kf yielded the highest values at 3% salinity. The molecular simulation results suggest that a high salinity increases the binding energy between EE2 and PES membranes, promoting the PES-EE2 interaction through π–π interaction, hydrogen bonding and hydrophobic interaction. This study provides valuable information for improving design of specialised treatment facilities (in farming, pharmaceutical industries, etc.) to allow better removal of EE2 and other low-polar organic contaminants from water via a membrane-based sorption-elution method, and we recommend the inclusion of salinity as a factor in modelling the adsorption capacity of membranes to prevent the oversaturation of membrane and minimise the release of contaminants into the environment. |
| first_indexed | 2024-10-01T05:59:46Z |
| format | Journal Article |
| id | ntu-10356/163009 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:59:46Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1630092022-11-19T23:31:39Z High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation Goh, J. Y. Goh, K. S. Yip, Y. M. Ng, C. K. School of Civil and Environmental Engineering School of Physical and Mathematical Sciences Interdisciplinary Graduate School (IGS) Singapore Centre for Environmental Life Sciences and Engineering (SCELSE) Engineering::Environmental engineering Polyethersulfone Salinity The increasing occurrence of steroidal hormone micropollutant in the aquatic environment and their associated consequences have caused serious environmental concerns globally. Adsorptive removal of hormonal pollutants using polymeric membranes has been suggested but information on their performance in various environmental conditions is lacking. In this study, we examined the effect of salinity on the performance of polyethersulfone (PES) membrane to remove synthetic hormone 17α-ethinyl estradiol (EE2) from water. Our results show that an increase of salinity from 0 to 3% results in higher retention of EE2 onto PES membrane from 79.3 to 98.7%. The experimental results fit the Freundlich isotherm model better as compared to the Langmuir model. The Freundlich parameters n and Kf yielded the highest values at 3% salinity. The molecular simulation results suggest that a high salinity increases the binding energy between EE2 and PES membranes, promoting the PES-EE2 interaction through π–π interaction, hydrogen bonding and hydrophobic interaction. This study provides valuable information for improving design of specialised treatment facilities (in farming, pharmaceutical industries, etc.) to allow better removal of EE2 and other low-polar organic contaminants from water via a membrane-based sorption-elution method, and we recommend the inclusion of salinity as a factor in modelling the adsorption capacity of membranes to prevent the oversaturation of membrane and minimise the release of contaminants into the environment. Published version CKN acknowledges Commonwealth Scholarship Commission for financial support in the form of Commonwealth Rutherford Fellowship (SGRF-2017-471). 2022-11-15T06:58:50Z 2022-11-15T06:58:50Z 2022 Journal Article Goh, J. Y., Goh, K. S., Yip, Y. M. & Ng, C. K. (2022). High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation. International Journal of Environmental Science and Technology, 19(6), 5195-5204. https://dx.doi.org/10.1007/s13762-021-03468-y 1735-2630 https://hdl.handle.net/10356/163009 10.1007/s13762-021-03468-y 2-s2.0-85130411017 6 19 5195 5204 en International Journal of Environmental Science and Technology © 2021 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. application/pdf |
| spellingShingle | Engineering::Environmental engineering Polyethersulfone Salinity Goh, J. Y. Goh, K. S. Yip, Y. M. Ng, C. K. High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation |
| title | High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation |
| title_full | High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation |
| title_fullStr | High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation |
| title_full_unstemmed | High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation |
| title_short | High salinity enhances the adsorption of 17α-ethinyl estradiol by polyethersulfone membrane: isotherm modelling and molecular simulation |
| title_sort | high salinity enhances the adsorption of 17α ethinyl estradiol by polyethersulfone membrane isotherm modelling and molecular simulation |
| topic | Engineering::Environmental engineering Polyethersulfone Salinity |
| url | https://hdl.handle.net/10356/163009 |
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