Double-layer cellulose hydrogel solar steam generation for high-efficiency desalination. (1st September 2020)

• Record Type: Journal Article
• Authors: Hu, Na; Xu, Yongjian; Liu, Zetan; Liu, Min; Shao, Xinyi; Wang, Jian
• Is Part Of: Carbohydrate polymers. Volume 243(2020)
• Publication Date: 2020-09-01
• Subjects: Double-layer cellulose hydrogel -- Solar steam generation -- High-efficiency evaporation -- Desalination; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2020.116480
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: A novel double-layer cellulose hydrogel was prepared as solar steam generation. The average evaporation rate and steam evaporation efficiency were investigated. Long-time durability and antifouling property were verified by the durability test. The outdoor steam evaporation efficiency and desalination performance were studied. Abstract: Solar steam generation is one of the most promising technologies for desalination. In order to further promote the development of solar steam generation, a double-layer cellulose hydrogel (DCH) was designed and used as solar steam generation for seawater desalination. Under one sun illumination intensity (1 kW·m −2 ), the average evaporation rate and the steam evaporation efficiency reaches 1.582 kg·m −2 h -1 and 91.4 %, respectively. The durability test was performed to verify the long-time durability and antifouling property. Outdoor experiment was carried out to prove the high steam evaporation efficiency and desalination performance of DCH. This paves a way for the cellulose-based hydrogel as a biodegradable, low-cost and promising solar steam generation.