A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater
Managing the wastewater discharged from oil and shale gas fields is a big challenge, because this kind of wastewater is normally polluted by high contents of both oils and salts. Conventional pressure-driven membranes experience little success for treating this wastewater because of either severe me...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/104136 http://hdl.handle.net/10220/38803 |
| _version_ | 1826116239646261248 |
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| author | Qin, Detao Liu, Zhaoyang Sun, Darren Delai Song, Xiaoxiao Bai, Hongwei |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Qin, Detao Liu, Zhaoyang Sun, Darren Delai Song, Xiaoxiao Bai, Hongwei |
| author_sort | Qin, Detao |
| collection | NTU |
| description | Managing the wastewater discharged from oil and shale gas fields is a big challenge, because this kind of wastewater is normally polluted by high contents of both oils and salts. Conventional pressure-driven membranes experience little success for treating this wastewater because of either severe membrane fouling or incapability of desalination. In this study, we designed a new nanocomposite forward osmosis (FO) membrane for accomplishing simultaneous oil/water separation and desalination. This nanocomposite FO membrane is composed of an oil-repelling and salt-rejecting hydrogel selective layer on top of a graphene oxide (GO) nanosheets infused polymeric support layer. The hydrogel selective layer demonstrates strong underwater oleophobicity that leads to superior anti-fouling capability under various oil/water emulsions, and the infused GO in support layer can significantly mitigate internal concentration polarization (ICP) through reducing FO membrane structural parameter by as much as 20%. Compared with commercial FO membrane, this new FO membrane demonstrates more than three times higher water flux, higher removals for oil and salts (>99.9% for oil and >99.7% for multivalent ions) and significantly lower fouling tendency when investigated with simulated shale gas wastewater. These combined merits will endorse this new FO membrane with wide applications in treating highly saline and oily wastewaters. |
| first_indexed | 2024-10-01T04:08:05Z |
| format | Journal Article |
| id | ntu-10356/104136 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:08:05Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1041362022-02-16T16:29:02Z A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater Qin, Detao Liu, Zhaoyang Sun, Darren Delai Song, Xiaoxiao Bai, Hongwei School of Civil and Environmental Engineering Energy Research Institute @ NTU (ERI@N) Managing the wastewater discharged from oil and shale gas fields is a big challenge, because this kind of wastewater is normally polluted by high contents of both oils and salts. Conventional pressure-driven membranes experience little success for treating this wastewater because of either severe membrane fouling or incapability of desalination. In this study, we designed a new nanocomposite forward osmosis (FO) membrane for accomplishing simultaneous oil/water separation and desalination. This nanocomposite FO membrane is composed of an oil-repelling and salt-rejecting hydrogel selective layer on top of a graphene oxide (GO) nanosheets infused polymeric support layer. The hydrogel selective layer demonstrates strong underwater oleophobicity that leads to superior anti-fouling capability under various oil/water emulsions, and the infused GO in support layer can significantly mitigate internal concentration polarization (ICP) through reducing FO membrane structural parameter by as much as 20%. Compared with commercial FO membrane, this new FO membrane demonstrates more than three times higher water flux, higher removals for oil and salts (>99.9% for oil and >99.7% for multivalent ions) and significantly lower fouling tendency when investigated with simulated shale gas wastewater. These combined merits will endorse this new FO membrane with wide applications in treating highly saline and oily wastewaters. Published version 2015-10-13T08:50:02Z 2019-12-06T21:27:13Z 2015-10-13T08:50:02Z 2019-12-06T21:27:13Z 2015 2015 Journal Article Qin, D., Liu, Z., Sun, D. D., Song, X., & Bai, H. (2015). A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater. Scientific Reports, 5, 14530-. 2045-2322 https://hdl.handle.net/10356/104136 http://hdl.handle.net/10220/38803 10.1038/srep14530 26416014 en Scientific Reports This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ application/pdf |
| spellingShingle | Qin, Detao Liu, Zhaoyang Sun, Darren Delai Song, Xiaoxiao Bai, Hongwei A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater |
| title | A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater |
| title_full | A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater |
| title_fullStr | A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater |
| title_full_unstemmed | A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater |
| title_short | A new nanocomposite forward osmosis membrane custom-designed for treating shale gas wastewater |
| title_sort | new nanocomposite forward osmosis membrane custom designed for treating shale gas wastewater |
| url | https://hdl.handle.net/10356/104136 http://hdl.handle.net/10220/38803 |
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