Self-Cleaning Integrative Aerogel for Stable Solar-Assisted Desalination

被引：25

作者：

Gu, Yufei ^{[1
]}

Mu, Xiaojiang ^{[1
]}

Wang, Pengfei ^{[1
]}

Wang, Xiaoyang ^{[1
]}

Tian, Yongzhi ^{[1
]}

Wei, Anyun ^{[1
]}

Zhang, Jiahong ^{[1
]}

Chen, Yulian ^{[1
]}

Sun, Zhiqiang ^{[1
]}

Zhou, Jianhua ^{[1
]}

Miao, Lei ^{[1
,2
]}

机构：

[1] Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guangxi Collaborat Innovat Ctr Struct & Property, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China

[2] Shibaura Inst Technol, Fac Engn, Innovat Global Program, Dept Mat Sci & Engn,SIT Res Labs, Tokyo 1358548, Japan

来源：

GLOBAL CHALLENGES | 2021年 / 5卷 / 01期

关键词：

integrative evaporators; salt rejection; solar-assisted desalination generators; solar steam generation; N-ACETYLATION; GENERATION; EVAPORATION; GRAPHENE; SYSTEM; FOAM;

D O I：

10.1002/gch2.202000063

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The solar-assisted desalination generator (SADG) shows great potential for solving water scarcity problems. However, salt precipitation and accumulation is still a challenge for SADG, which slows down solar steam generation performance of evaporator during operation. Here, a facile integrative evaporator featuring stable and high evaporation performance breaks this bottleneck. By using a rational design in which amorphous carbon particles are evenly composited within the porous chitosan aerogel, the evaporator not only integrates excellent light absorption, heat management, and water transportation abilities but also endows a large vapor escape space. Upon desalination, salt concentration ingredients between carbon particles and chitosan membranes can be quickly balanced by water transport in interconnected chitosan chains, and thus salt precipiation on the evaporator surface would be avoided. Compared to other salt-rejection evaporators, the integrative evaporator can operate in 3.5 wt% brine for 60 days without salt precipiation and exhibits a stable evaporation rate (1.70 kg m(-2) h(-1)), indicating its potential for practical applications in seawater desalination and the harvest of clean drinking water.

引用

页数：7

共 41 条

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