Superhydrophobic-omniphobic membrane with anti-deformable pores for membrane distillation with excellent wetting resistance

Zhu, Zhigao; Zhong, Lingling; Horseman, Thomas; Liu, Zhiyuan; Zeng, Gaofeng; Li, Zhenyu; Lin, Shihong; Wang, Wei

doi:10.1016/j.memsci.2020.118768

Cited by 71 publications

(29 citation statements)

References 52 publications

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“…11 shows the recent tailor-made nanofiber-based superhydrophobic [46,74,111] and omniphobic [45,116,118] membranes with superior fouling and scaling resistance. The preparation of these membranes followed a similar concept: firstly adding nanoparticles to the nanofibers or creating surface roughness by a hydrothermal technique [118,119] or growing metal oxides [116]; then chemically modify the surface via fluorination. Fig.…”

Section: Experimental Observation Of Wetting State Transformationmentioning

confidence: 99%

Understanding the fouling/scaling resistance of superhydrophobic/omniphobic membranes in membrane distillation

et al. 2021

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Section: Experimental Observation Of Wetting State Transformationmentioning

confidence: 99%

Understanding the fouling/scaling resistance of superhydrophobic/omniphobic membranes in membrane distillation

et al. 2021

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“…To solve the problems of membrane fouling and membrane wetting, it is necessary to improve the hydrophobicity, porosity, thermal stability, chemical resistance, and mechanical rigidity of the membrane [11]. Zhu et al [43] fabricated a superhydrophobic-omniphobic membrane with outstanding mechanical rigidity to treat high-salinity wastewaters. The membrane had ~100% salt rejection, excellent fouling resistance, and sufficient wetting resistance when treating a high-salinity solution, i.e., simulated RO brine.…”

Section: Desalination Brinementioning

confidence: 99%

Membrane Distillation for Wastewater Treatment: A Mini Review

Yan

Jiang

Liu

et al. 2021

Water

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Water serves as an indispensable part of human life and production. On account of the overexploitation of traditional water sources, the demand for wastewater recycling is expanding rapidly. As a promising water treatment process, membrane distillation (MD) has been utilized in various wastewater treatments, such as desalination brine, textile wastewater, radioactive wastewater, and oily wastewater. This review summarized the investigation work applying MD in wastewater treatment, and the performance was comprehensively introduced. Moreover, the obstructions of industrialization, such as membrane fouling, membrane wetting, and high energy consumption, were discussed with the practical investigation. To cope with these problems, various strategies have been adopted to enhance MD performance, including coupling membrane processes and developing membranes with specific surface characteristics. In addition, the significance of nutrient recovery and waste heat utilization was indicated.

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“…As a consequence of rapid population growth, climate change, and destructive human activities, the accessibility of potable water has become a global issue. In addition, petrochemical, mining, steel, and other industries exacerbate the current situation even further [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Physical Characteristics of Styrene–Acrylonitrile Nanofiber Membranes Using Various Post-Treatments for Membrane Distillation

et al. 2021

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Insufficient mechanical strength and wide pore size distribution of nanofibrous membranes are the key hindrances for their concrete applications in membrane distillation. In this work, various post-treatment methods such as dilute solvent welding, vapor welding, and cold-/hot-pressing processes were used to enhance the physical properties of styrene–acrylonitrile (SAN) nanofiber membranes fabricated by the modified electrospinning process. The effects of injection rate of welding solution and a working distance during the welding process with air-assisted spraying on characteristics of SAN nanofiber membranes were investigated. The welding process was made less time-consuming by optimizing system parameters of the electroblowing process to simultaneously exploit residual solvents of fibers and hot solvent vapor to reduce exposure time. As a result, the welded SAN membranes showed considerable enhancement in mechanical robustness and membrane integrity with a negligible reduction in surface hydrophobicity. The hot-pressed SAN membranes obtained the highest mechanical strength and smallest mean pore size. The modified SAN membranes were used for the desalination of synthetic seawater in a direct contact membrane distillation (DCMD). As a result, it was found that the modified SAN membranes performed well (>99.9% removal of salts) for desalination of synthetic seawater (35 g/L NaCl) during 30 h operation without membrane wetting. The cold-/hot-pressing processes were able to improve mechanical strength and boost liquid entry pressure (LEP) of water. In contrast, the welding processes were preferred to increase membrane flexibility and permeation.

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Superhydrophobic-omniphobic membrane with anti-deformable pores for membrane distillation with excellent wetting resistance

Cited by 71 publications

References 52 publications

Understanding the fouling/scaling resistance of superhydrophobic/omniphobic membranes in membrane distillation

Understanding the fouling/scaling resistance of superhydrophobic/omniphobic membranes in membrane distillation

Membrane Distillation for Wastewater Treatment: A Mini Review

Enhancement of Physical Characteristics of Styrene–Acrylonitrile Nanofiber Membranes Using Various Post-Treatments for Membrane Distillation

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