Metal organic framework (MOF) membranes have gained more attentions due to their abilities in various applications gas and liquid separations. The majority of works are related Zeolite imidazolate frameworks-8 (ZIF-8). This is often attributed its high stability, easy synthesis, good separation. They a significant interest scientists the aptitude be utilized other separations applications. Inde...

Mechanical engineer Shreya Dave never planned to start a company. As a graduate student in materials scientist Jeffrey Grossman’s lab at Massachusetts Institute of Technology, Dave set out to develop a separation membrane for use in water desalinationwith the ultimate goal of creating freshwater from the sea. She succeeded in creating a graphene-oxide-based membrane that could filter molecules...

We have conducted large-scale screening of zeolite materials for CO2/CH4 and CO2/N2 membrane separation applications using the free energy landscape of the guest molecules inside these porous materials. We show how advanced molecular simulations can be integrated with the design of a simple separation process to arrive at a metric to rank performance of over 87,000 different zeolite structures,...

An optimal design strategy for spiral-wound membrane networks based on an approximate permeator model and a mixedinteger nonlinear programming (MINLP) solution strategy is proposed. A general permeator system superstructure is used to embed a very large number of possible network con®gurations. The superstructure allows the development of a MINLP design strategy which simultaneously optimizes t...

Analytical gas-permeation models for predicting the separation process across  membranes (exit compositions and area requirement) constitutes an important and necessary step in understanding the overall performance of  membrane modules. But, the exact (numerical) solution methods suffer from the complexity of the solution. Therefore, solutions of nonlinear ordinary differential equations th...

Freeze fracturing and deep etching have been used to study thermotropic lateral translational motion of intramembrane particles and membrane surface anionic groups in the inner mitochondrial membrane. When the inner membrane is equilibrated at low temperature, the fracture faces of both halves of the membrane reveal a lateral separation between intramembrane particles and particle free, large s...