Natural-inspired hierarchic double-Janus solar evaporator for stable clean water production from high-salinity emulsions

被引：15

作者：

Yu, Zhen ^{[1
]}

Gu, Ruonan ^{[1
]}

Su, Yuqing ^{[1
]}

Li, Yihang ^{[1
]}

Liu, Guangli ^{[2
]}

Cheng, Shaoan ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China

[2] Sun Yat sen Univ, Sch Environm Sci & Engn, Guangdong Prov Key Lab Environm Pollut Control & R, Guangzhou 510006, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2024年 / 474卷

基金：

美国国家科学基金会;

关键词：

Interfacial solar evaporation; Oil -in -water emulsion separation; Hydrogel; Janus; High; -salinity; Oily wastewater; OILY WASTE-WATER; MEMBRANE;

D O I：

10.1016/j.jhazmat.2024.134739

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Interfacial solar evaporation shows great potential in clean water production, emulsions separation, and highsalinity brine treatment. However, it remains challenging for the evaporators to maintain a high evaporation rate in the high-salinity emulsions due to the co-pollution of salt and oil. Herein, we first proposed a hierarchic double-Janus solar evaporator (HDJE) with a hydrophobic salt-rejecting top layer and oil-rejecting bottom layer. Compared to the traditional one, HDJE could treat industrial high-salinity oil-in-water emulsions stably for over 70 h, with a stable average evaporation rate of 1.73 kg m- 2 h-1 and a high purification efficiency of up to 99.8 % for oil and ions. It was also verified that HDJE could be used for high-efficiency purification of oily concentrated seawater outdoor. An average water production rate of 3.59 kg m- 2 d-1 and a TOC removal ratio of over 98 % was obtained. In conclusion, this study provides a novel way to effectively dispose of high-salinity oily wastewater.

引用

页数：8

共 43 条

[1] Current advances in membrane technologies for saline wastewater treatment: A comprehensive review [J].