海水
海水淡化
蒸发
卤水
环境友好型
材料科学
蒸馏
盐水
工艺工程
盐(化学)
结晶
化学工程
环境科学
色谱法
环境工程
化学
热力学
工程类
生态学
生物化学
海洋学
有机化学
物理化学
膜
生物
地质学
物理
作者
Yihang Li,Shaoan Cheng,Zhen Yu,Ruonan Gu,Xiao He
标识
DOI:10.1016/j.jclepro.2022.134025
摘要
Emerging solar-driven passive multistage distillation (MSD) devices are considered one of the most promising strategies for environmentally friendly freshwater production, but salt-resistant and stability remain challenges. Here, an MSD device with a well-tolerated salt-resistant structure was designed to control the crystallization location by radial water transfer. The device is capable of producing both freshwater and salt crystals with in-situ zero liquid discharge. For a well-designed 7-stage device, the steady evaporation rate and the salt yield reached 2.21 kg m−2 h−1 and 60 g m−2 h−1 under a 1 kW m−2 light intensity and 3.5 wt% NaCl solution. In particular, the device maintained stable evaporation performance at high brine concentrations of 10 wt%, demonstrating the broad applicability of the strategy. Thus, this novel approach to the stable operation of MSD devices demonstrates a promising option for seawater desalination technology.
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