Abstract
To recover the filtered residues on a gel layer in a column, the method using the elasticity of the gel layer and flowing water in a cross-flow manner is proposed. Polymerized spherical gel (40 μm) was packed in a column to a set height of 0.7 cm. The suspensions of graphene oxide at various sizes and shapes were injected on the top of the gel layer and then water was flowed at a flow rate of 1000 mL·h−1 until 0.10 MPa. By releasing the applied pressure, the elastic gel layer rose up, and the filtered graphene oxide also rose above the layer. This rise of the gel layer is due to the difference of pressure between the gel layer, including the filtered graphene oxide, and the open bottom of the column, using the flow of water. The cross flow of water through the column carried away the larger-sized filtered graphene oxide floating above the gel layer. The elasticity of the gel layer and cross flow through the column has the potential to recover the filtered particles.
Highlights
Filtration techniques have been used for particle and polymer separation based on the difference of shapes and sizes
Suspensions of graphene oxide (1.0 g·L−1 ) were injected on the top of the elastic gel layer and water was flowed through the gel layer
Graphene oxide at the larger size was filtered at the flow rate of 1000 mL·h−1 and remained at the top of the gel layer
Summary
Filtration techniques have been used for particle and polymer separation based on the difference of shapes and sizes. Using the elasticity of the spherical gel packed in the column, the following method to recover filtered residue is proposed (Figure 1): (1) the solution, including filtered particles, is injected on the top of the gel layer and water is flowed through the gel layer for the filtration; (2) the gel layer rises up by releasing the applied pressure; and (3) the filtered residues floating above the gel layer are recovered. The techniques by porous membranes have been proposed fortothe introduceofcolloidal particles and a polymer to the membrane, and was to form the skin layer on the separation particles. With the aim of the proposed recovery process of filtered GO, as shown, the following items are studied: (1) measurement of the rise-up height of the elastic gel layer by releasing the applied pressure; and (2) the recovery of filtered. With respect to the recovery of the filtered GO, and to the separation of various sizes of GO in the gel layer, the elastic gel layer has potential, leading to a synergistic separation and recovery process
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
