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A facile energy-saving and environmental oil-spill remedial method: Separation patterns and kinetics research
- Source :
- Applied Surface Science. 556:149761
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Three-dimensional porous sponge has been demonstrated as an outstanding candidate in oil/water separation due to its hydrophobicity and oleophilicity that originates from the synergistic effect of rough structure and low surface energy, but the separation process has not been illuminated clearly. This paper presents the study of the synthesis of oil/water separation sponge, mechanism of separation process and establishment of kinetic model, via the combination among dopamine chemistry, covalent modification, theoretical analysis, experimental results and mathematical model. Results show that both the dopamine deposition time and the octadecyltrimethoxysilane hydrolysis system significantly affect the hydrophobicity of the modified-melamine sponge and that the oil/water separation process is composed of six scenarios with different physical state. Furthermore, with the experimental results, established iso-potential separation model and the height-quantized model, we conclude that the time-dependent separation patterns and kinetics are subjected to the modulation of the viscosity of the separated substance and the immersion depth of the sponge.
- Subjects :
- Materials science
Kinetics
Octadecyltrimethoxysilane
General Physics and Astronomy
02 engineering and technology
Surfaces and Interfaces
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Surface energy
0104 chemical sciences
Surfaces, Coatings and Films
Separation process
chemistry.chemical_compound
Viscosity
Hydrolysis
chemistry
Chemical engineering
Deposition (phase transition)
0210 nano-technology
Porosity
Subjects
Details
- ISSN :
- 01694332
- Volume :
- 556
- Database :
- OpenAIRE
- Journal :
- Applied Surface Science
- Accession number :
- edsair.doi...........1cdacf3b618ec527c237ed827a921a73