Research on application of modified sponge oleophylic and hydrophobic materials in oily sewage treatment
As the main development direction of oil-water separation,physical adsorption separation tech-nology has several advantages such as low cost,simple operation,and environmental friendliness.Sponage,as a porous material with three-dimensional network structure,has strong adsorption performance and can be used as a substrate for oleophylic and hydrophobic adsorption materials.The latest achievements in hydrophobic modifi-cation of polyurethane and melamine sponge were elaborated.Starting from the types of hydrophobic modified layers,the preparation methods of three modified sponge hydrophobic materials:silane surface modification,grapheme modification,and nanomaterial modification were introduces.At the same time,it was also pointed out that,the shortcomings of the current synthesis methods mainly reflected in the detachment of the modified layer,complex preparation process,and difficulty in treating emulsified oil.
physical adsorptionoil-water separationspongeoleophylic and hydrophobic materialhy-drophobic modification