Solar Seawater Distillation by Flexible and Fully Passive Multistage Membrane Distillation
| Autor: | Yusuf Shi, Peng Wang, Sara Aleid, Wenbin Wang, Mengchun Wu, Chenlin Zhang, Sifei Zhuo, Renyuan Li |
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| Rok vydání: | 2021 |
| Předmět: |
Evaporation
Bioengineering 02 engineering and technology Membrane distillation Water Purification law.invention law Latent heat Seawater General Materials Science Process engineering Distillation business.industry Mechanical Engineering Condensation Water General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Brine Sunlight Environmental science Siphon 0210 nano-technology business |
| Zdroj: | Nano Letters. 21:5068-5074 |
| ISSN: | 1530-6992 1530-6984 |
| DOI: | 10.1021/acs.nanolett.1c00910 |
| Popis: | Solar-assisted distillation is considered promising to solve the freshwater supply for off-grid communities. In this work, a passive and flexible multistage membrane distillation (F-MSMD) device is devised to produce freshwater via solar distillation with the latent heat of vapor condensation being recycled to enhance its energy efficiency. By designing a siphon effect, source water is continuously wicked into the evaporation layer and the concentrated brine flows out of the device before reaching saturation, which successfully solves the otherwise challenge of salt accumulation inside the device. To achieve such siphon flow, the recycled paper is prepared from spent copy paper and used as the evaporation layer for efficient water delivery owing to its large pore size and high hydrophilicity. An eight-stage F-MSMD device exhibits a stable clean water production rate at 3.61 kg m-2 h-1 in the newly designed siphon-flow mode. This work provides a green route for designing a solar-assisted distillation device. |
| Databáze: | OpenAIRE |
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