Design and development of hybrid hydrophilic-superhydrophobic surfaces to improve the productivity of atmospheric water harvesting

dc.contributor.advisorAsiabanpour, Bahram
dc.contributor.authorAlmusaied, Zaid Ibrahim
dc.contributor.committeeMemberIrvin, Jennifer
dc.contributor.committeeMemberBetancourt, Tania
dc.contributor.committeeMemberChittenden, William
dc.contributor.committeeMemberChen, Yihong
dc.date.accessioned2022-05-02T13:37:58Z
dc.date.available2022-05-02T13:37:58Z
dc.date.issued2022-05
dc.description.abstractThe continuous growth in the human population and climate change exacerbate the problems related to water scarcity. Harvesting atmospheric water can mitigate water scarcity in many regions around the globe. Atmospheric water harvesting includes fog collection, passive condensation, and atmospheric water generation (AWG). Fog collection using hybrid hydrophilic-superhydrophobic surfaces can achieve a higher water collection rate. In this research, new processes and materials are introduced to create hybrid surfaces. The processes include additive manufacturing- to make sheets with holes-, mixing and casting polymeric matrix composite, and a controlled spray coating mechanism. The materials are comprised of hydrophobic coating on top of the acrylic printed sheet and hydrophilic composite. The ratios of the pitches to diameters of the hydrophilic regions varied to obtain the best water generation during the experiments. The water collection rate for the sample with diameters of 583 μm and a pitch of 1,600 μm has achieved 57% more than the untreated hydrophilic sample. The contrast in wettability accomplished by this novel method has the potential to be implemented on a large scale for atmospheric water harvesting. Additionally, the possibility of using thermoacoustic refrigeration for AWG has been explored.
dc.description.departmentMaterials Science, Engineering, and Commercialization
dc.formatText
dc.format.extent260 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationAlmusaied, Z. I. (2022). <i>Design and development of hybrid hydrophilic-superhydrophobic surfaces to improve the productivity of atmospheric water harvesting</i> (Unpublished dissertation). Texas State University, San Marcos, Texas.
dc.identifier.urihttps://hdl.handle.net/10877/15718
dc.language.isoen
dc.subjectAtmospheric water harvesting
dc.subjectFog collection
dc.subjectAtmospheric water generator
dc.subjectSuperhydrophobic
dc.subjectHybrid surface
dc.subjectHydrophilic
dc.subjectAdditive manufacturing
dc.subjectComposite
dc.subjectSubtractive manufacturing
dc.subjectThermoacoustic refrigerator
dc.titleDesign and development of hybrid hydrophilic-superhydrophobic surfaces to improve the productivity of atmospheric water harvesting
dc.typeDissertation
thesis.degree.departmentMaterials Science, Engineering, and Commercialization Program
thesis.degree.disciplineMaterials Science, Engineering, and Commercialization
thesis.degree.grantorTexas State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy

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