期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 301, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2022.121938
关键词
Solar evaporation; Seawater desalination; Polymeric solid wastes; PVF sponge; Carbon emission; Artificial neural network
资金
- National Key Research and Devel- opment Program of China
- National Natural Science Foundation of China
- Guangdong Basic and Applied Basic Research Foundation
- Guangdong Provincial Key Laboratory of Distributed Energy Systems
- [2018YFA0901300]
- [52070162]
- [2021A1515111189]
- [2020B1212060075]
This study proposes a new method for utilizing polymeric solid waste to synthesize a solar evaporator for freshwater production. Stable seawater desalination is achieved through intermittent salt accumulation strategy. The outdoor water production rate worldwide is predicted using an artificial neural network.
Freshwater shortage and polymeric solid waste pollutions are among the most serious global issues. To address these, we propose a novel strategy that utilizes these polymeric solid wastes to synthesize an interfacial solar evaporator for freshwater production. As one of the typical polymeric solid wastes, the poly (vinyl formalde-hyde) (PVF) sponge is selected to demonstrate this strategy as the substrate to fabricate the polypyrrole-coated PVF sponge (PPy/PVF sponge). Benefiting from the intermittent salt accumulation strategy, PPy/PVF sponge enables stable seawater desalination with an excellent evaporation rate of 1.15 kg m -2h- 1 under 1 sun. The calculated and experimental results show that the intermittent salt accumulation strategy enables most inter-facial solar evaporators to be operated stably in seawater. In addition, we design an outdoor device containing the PPy/PVF sponge with a maximum water production rate of 4.85 kg m-2 daily. Based on the outdoor per-formance data, we propose a novel method to predict the outdoor water production rate worldwide through an artificial neural network, which is also the first multi-objective method to predict the outdoor performance of interfacial solar evaporators, as we know. It is estimated the device containing 10 m2 of PPy/PVF sponge could meet at least 17-26 people's daily drinking water needs. In conclusion, this work proposes a novel method for the resource utilization of polymeric solid wastes and gives new insights into efficient and stable solar seawater desalination.
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