Permeation Characteristics of Neutral and Charged Solutes through Covalent Organic Framework (COF) Nanofiltration Membranes
Mentor 1
Xiaoli Ma
Start Date
28-4-2023 12:00 AM
Description
Membrane technology is an important part of sustainable development in water treatment processes and can provide solutions to water scarcity through desalination, water contamination, ecosystem rehabilitation, along with applications in biomedical engineering for separation processes. Nanofiltration membranes with Covalent Organic Frameworks (COFs) have unique structure and properties with high porosity, large surface area, and ordered pore structure, and have emerged as a promising energy-efficient water purification technology. Moreover, these properties provide opportunities for efficient organic carbon separation. Using neutral solutes, polyethylene glycol and sugars at a range of molecular weights, comparison of the molecular structure of the compound and its effects on rejection can be observed. The neutral charge allows the characterization of the (COF) membrane and its efficiency with negligible effects on rejection rate from electro-repulsion forces. In this research, we will investigate the molecular weight cut off performance of the COF membranes with neutral particles, and use transport models to analyze the data to estimate membrane pore size, molecular structure, and separation mechanisms.
Permeation Characteristics of Neutral and Charged Solutes through Covalent Organic Framework (COF) Nanofiltration Membranes
Membrane technology is an important part of sustainable development in water treatment processes and can provide solutions to water scarcity through desalination, water contamination, ecosystem rehabilitation, along with applications in biomedical engineering for separation processes. Nanofiltration membranes with Covalent Organic Frameworks (COFs) have unique structure and properties with high porosity, large surface area, and ordered pore structure, and have emerged as a promising energy-efficient water purification technology. Moreover, these properties provide opportunities for efficient organic carbon separation. Using neutral solutes, polyethylene glycol and sugars at a range of molecular weights, comparison of the molecular structure of the compound and its effects on rejection can be observed. The neutral charge allows the characterization of the (COF) membrane and its efficiency with negligible effects on rejection rate from electro-repulsion forces. In this research, we will investigate the molecular weight cut off performance of the COF membranes with neutral particles, and use transport models to analyze the data to estimate membrane pore size, molecular structure, and separation mechanisms.
