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Beyond brine: Super salt-resistant solar evaporator via inclined brine regulation and sustainable energy transition.

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Title: Beyond brine: Super salt-resistant solar evaporator via inclined brine regulation and sustainable energy transition.
Authors: Gan, Yuchen1,2 (AUTHOR), Feng, Zihan1 (AUTHOR), Xiao, Ruilei1 (AUTHOR), Alomar, Muneerah3 (AUTHOR), Quang, Dang Viet4 (AUTHOR), Ho, Nang Xuan5 (AUTHOR), Arshad, Naila1 (AUTHOR), Tao, Junyang1 (AUTHOR), Rehman, Saif Ur6 (AUTHOR), Wang, Xianbao1 (AUTHOR) wxb@hubu.edu.cn, Dao, Van-Duong1,4 (AUTHOR) duong.daovan@phenikaa-uni.edu.vn, Irshad, Muhammad Sultan1 (AUTHOR) muhammadsultanirshad@hubu.edu.cn
Source: Desalination. Nov2025, Vol. 614, pN.PAG-N.PAG. 1p.
Subjects: Salinity, Water purification, Solar thermal energy, Evaporators, Resistance heating, Salinization, Clean energy, Saline water conversion
Abstract: Advanced photothermal structures with self-salt cleaning mechanisms are needed to reduce salt accumulation and solar steam generation efficiency loss. Traditional solar evaporators fail to maintain efficient evaporation and long-term salt rejection due to increasing salinity. A salinity gradient fabric evaporator with a 70° inclination angle is constructed to tackle this dilemma. In contrast to traditional designs, the auxiliary salinity gradient and Joule heating enhance ion circulation and reduce salinity buildup within high-concentration salt removal operations. This results in continuous salt rejection and better energy utilization through moderate Marangoni flow. The evaporator endows an accelerated evaporation rate (2.08 kg m−2 h−1) under one sun irradiation, and exceptionally enhanced up to 8.73 kg m−2 h−1 under joule heating effect (4.5 V), with superior salt resistance (09 days of desalination in 10 wt% brine), are simultaneously achieved through optimized salinity gradient construction. A notable water evaporation rate of 39.8 % is achieved during high-salinity outdoor desalination, demonstrating its effective purification capability. This study offers insights into the design of salinity gradient evaporators aimed at enhancing efficient and sustainable clean water production. [Display omitted] • Super salt-resistant solar evaporator via inclined brine regulation and sustainable energy transition is presented • A salinity gradient fabric evaporator with a 70° inclination angle is constructed. • The water evaporation rate of 4.29 kg m−2 h−1 is obtained under one sun irradiation • This study offers insights into the design of salinity gradient evaporators [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Advanced photothermal structures with self-salt cleaning mechanisms are needed to reduce salt accumulation and solar steam generation efficiency loss. Traditional solar evaporators fail to maintain efficient evaporation and long-term salt rejection due to increasing salinity. A salinity gradient fabric evaporator with a 70° inclination angle is constructed to tackle this dilemma. In contrast to traditional designs, the auxiliary salinity gradient and Joule heating enhance ion circulation and reduce salinity buildup within high-concentration salt removal operations. This results in continuous salt rejection and better energy utilization through moderate Marangoni flow. The evaporator endows an accelerated evaporation rate (2.08 kg m−2 h−1) under one sun irradiation, and exceptionally enhanced up to 8.73 kg m−2 h−1 under joule heating effect (4.5 V), with superior salt resistance (09 days of desalination in 10 wt% brine), are simultaneously achieved through optimized salinity gradient construction. A notable water evaporation rate of 39.8 % is achieved during high-salinity outdoor desalination, demonstrating its effective purification capability. This study offers insights into the design of salinity gradient evaporators aimed at enhancing efficient and sustainable clean water production. [Display omitted] • Super salt-resistant solar evaporator via inclined brine regulation and sustainable energy transition is presented • A salinity gradient fabric evaporator with a 70° inclination angle is constructed. • The water evaporation rate of 4.29 kg m−2 h−1 is obtained under one sun irradiation • This study offers insights into the design of salinity gradient evaporators [ABSTRACT FROM AUTHOR]
ISSN:00119164
DOI:10.1016/j.desal.2025.119182