Solar enhanced membrane distillation for ammonia recovery
Directly recovering ammonia from waste streams is a sustainable approach for ammonia management since it saves energy from both the Haber-Bosch process, the major industrial method for ammonia synthesis, and wastewater treatment. Membrane distillation (MD), an evaporation-based membrane separation p...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Membrane Science Letters |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772421223000077 |
| _version_ | 1797798522392674304 |
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| author | Kai Yang Hongang Du Mohan Qin |
| author_facet | Kai Yang Hongang Du Mohan Qin |
| author_sort | Kai Yang |
| collection | DOAJ |
| description | Directly recovering ammonia from waste streams is a sustainable approach for ammonia management since it saves energy from both the Haber-Bosch process, the major industrial method for ammonia synthesis, and wastewater treatment. Membrane distillation (MD), an evaporation-based membrane separation process, has been employed to recover ammonia from ammonia-rich wastewater due to the high volatility of ammonia. In this study, the photothermal effect is incorporated into MD to enhance the ammonia recovery from ammonia-rich wastewater. Carbon black particles are coated on the membrane surface to increase its absorption of solar irradiation at the solution-membrane interface and facilitate the ammonia transport across the membrane. We demonstrate that the system can recover ammonia at a maximum ammonia flux of 4.52 g-N·m−2·h−1 with a solar intensity of 1.7 kW·m−2. The estimated mass transfer coefficient of carbon black coated membrane is 2.67 × 10−2 m·h−1 with solar irradiation, enhanced by 30.8% when compared to that in a pristine membrane. We also confirm that the improvement of ammonia flux by photothermal effect is equivalent to heating the feed solution by 20–30 °C. Our study demonstrates a promising pathway for utilizing solar energy by photothermal effects to enhance MD for ammonia recovery from ammonia-rich wastewater. |
| first_indexed | 2024-03-13T04:05:00Z |
| format | Article |
| id | doaj.art-2b483909bb7549f594de5f3df3e5a600 |
| institution | Directory Open Access Journal |
| issn | 2772-4212 |
| language | English |
| last_indexed | 2024-03-13T04:05:00Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Membrane Science Letters |
| spelling | doaj.art-2b483909bb7549f594de5f3df3e5a6002023-06-21T07:01:33ZengElsevierJournal of Membrane Science Letters2772-42122023-05-0131100043Solar enhanced membrane distillation for ammonia recoveryKai Yang0Hongang Du1Mohan Qin2Department of Civil and Environmental Engineering, University of Wisconsin–Madison, Madison, Wisconsin 53706, USADepartment of Environmental Health and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USADepartment of Civil and Environmental Engineering, University of Wisconsin–Madison, Madison, Wisconsin 53706, USA; Environmental Chemistry and Technology Program, University of Wisconsin–Madison, Madison, Wisconsin 53706, USA; Corresponding author.Directly recovering ammonia from waste streams is a sustainable approach for ammonia management since it saves energy from both the Haber-Bosch process, the major industrial method for ammonia synthesis, and wastewater treatment. Membrane distillation (MD), an evaporation-based membrane separation process, has been employed to recover ammonia from ammonia-rich wastewater due to the high volatility of ammonia. In this study, the photothermal effect is incorporated into MD to enhance the ammonia recovery from ammonia-rich wastewater. Carbon black particles are coated on the membrane surface to increase its absorption of solar irradiation at the solution-membrane interface and facilitate the ammonia transport across the membrane. We demonstrate that the system can recover ammonia at a maximum ammonia flux of 4.52 g-N·m−2·h−1 with a solar intensity of 1.7 kW·m−2. The estimated mass transfer coefficient of carbon black coated membrane is 2.67 × 10−2 m·h−1 with solar irradiation, enhanced by 30.8% when compared to that in a pristine membrane. We also confirm that the improvement of ammonia flux by photothermal effect is equivalent to heating the feed solution by 20–30 °C. Our study demonstrates a promising pathway for utilizing solar energy by photothermal effects to enhance MD for ammonia recovery from ammonia-rich wastewater.http://www.sciencedirect.com/science/article/pii/S2772421223000077Ammonia recoveryMembrane distillationSolarPhotothermal effectCarbon black |
| spellingShingle | Kai Yang Hongang Du Mohan Qin Solar enhanced membrane distillation for ammonia recovery Journal of Membrane Science Letters Ammonia recovery Membrane distillation Solar Photothermal effect Carbon black |
| title | Solar enhanced membrane distillation for ammonia recovery |
| title_full | Solar enhanced membrane distillation for ammonia recovery |
| title_fullStr | Solar enhanced membrane distillation for ammonia recovery |
| title_full_unstemmed | Solar enhanced membrane distillation for ammonia recovery |
| title_short | Solar enhanced membrane distillation for ammonia recovery |
| title_sort | solar enhanced membrane distillation for ammonia recovery |
| topic | Ammonia recovery Membrane distillation Solar Photothermal effect Carbon black |
| url | http://www.sciencedirect.com/science/article/pii/S2772421223000077 |
| work_keys_str_mv | AT kaiyang solarenhancedmembranedistillationforammoniarecovery AT hongangdu solarenhancedmembranedistillationforammoniarecovery AT mohanqin solarenhancedmembranedistillationforammoniarecovery |