期刊
ADVANCED MATERIALS TECHNOLOGIES
卷 7, 期 8, 页码 -出版社
WILEY
DOI: 10.1002/admt.202200198
关键词
triboelectric dehydrator; triboelectric nanogenerator; self-powered; water-in-oil emulsions
资金
- National Key R&D Project from Minister of Science and Technology [2021YFA1201604]
- National Natural Science Foundation of China [51879022, 51979045, 52101400, 52101382, 52101345]
- Dalian Outstanding Young Scientific and Technological Talents Project [2021RJ11]
This study proposes a self-powered and efficient triboelectric dehydrator (TED) based on a wind-driven freestanding rotary triboelectric nanogenerator (FR-TENG) to separate water-in-oil emulsions. The dehydration performance of the TED is analyzed through multiphysics-coupled models and experiments, demonstrating its potential for separating oil-water emulsions by harvesting environmental energy.
Oil-water emulsions are a considerable hazard to the environment, ecology, and human health, if not appropriately treated. This study proposes a self-powered and efficient triboelectric dehydrator (TED) based on a wind-driven freestanding rotary triboelectric nanogenerator (FR-TENG) to separate water-in-oil emulsions. This TED can form a high-voltage electric field in the emulsion when the FR-TENG is driven by mechanical energy. The dehydration performance of the TED is analyzed in detail through multiphysics-coupled models and experiments. It is found that the TED can dehydrate water-in-oil emulsions with a wide range of initial moisture contents. In particular, even when the initial moisture content is 60%, which is near the phase inversion concentration of the emulsion, the dehydration rate of the TED can still reach 99.41%. In addition, the performance of TED is demonstrated in a simulated situation of wind, suggesting that the present TED has great potential application for separating oil-water emulsions by harvesting environmental energy.
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