Highly efficient three-dimensional solar evaporator for zero liquid discharge desalination of high-salinity brine  

作　　者：Meichun Ding Demin Zhao Panpan Feng Baolei Wang Zhenying Duan Rui Wei Yuxi Zhao Chen-Yang Liu Chenwei Li 

机构地区：[1]School of Chemistry and Pharmaceutical Engineering,Shandong First Medical University&Shandong Academy of Medical Sciences,Jinan,China [2]Medical Science and Technology Innovation Center,Shandong First Medical University&Shandong Academy of Medical Sciences,Jinan,China [3]Institut de Chimie Radicalaire,Aix Marseille Univerisity,Marseille,France [4]CAS Key Laboratory of Engineering Plastics,CAS Research/Education Center for Excellence in Molecular Sciences,Institute of Chemistry,the Chinese Academy of Sciences,Beijing,China

出　　处：《Carbon Energy》2024年第9期52-65,共14页碳能源（英文）

基　　金：This work was supported by the Taishan Young Scholar Program(tsqn202306267);the National Natural Science Foundation of China(51802168);the Natural Science Foundation of Shandong Province(ZR2023ME172).

摘　　要：Solar-driven interfacial evaporation is a promising technology for freshwater production from seawater,but salt accumulation on the evaporator surface hinders its performance and sustainability.In this study,we report a simple and green strategy to fabricate a three-dimensional porous graphene spiral roll(3GSR)that enables highly efficient solar evaporation,salt collection,and water production from near-saturated brine with zero liquid discharge(ZLD).The 3GSR design facilitates energy recovery,radial brine transport,and directional salt crystallization,thereby resulting in an ultrahigh evaporation rate of 9.05 kg m^(-2) h^(-1) in 25 wt%brine under 1-sun illumina-tion for 48 h continuously.Remarkably,the directional salt crystallization on its outer surface not only enlarges the evaporation area but also achieves an ultrahigh salt collection rate of 2.92 kg m^(-2) h^(-1),thus enabling ZLD desalination.Additionally,3GSR exhibits a record-high water production rate of 3.14 kg m^(-2) h^(-1) in an outdoor test.This innovative solution offers a highly efficient and continuous solar desalination method for water production and ZLD brine treatment,which has great implications for addressing global water scarcity and environmental issues arising from brine disposal.

关 键 词：graphene aerogels graphene composites solar desalination solar-driven interfacial evaporation 

分 类 号：TK519[动力工程及工程热物理—热能工程]