| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Synthesis, Characterization, Modeling and Applications of Functional Porous Materials
|
| Presentation Title |
Integrated Multi-characterization Approach to Understand Pore Size Distributions in Ceramic Composite Membranes |
| Author(s) |
V. V. Rohit Bukka, Christine Brockman, Pankaj Sarin |
| On-Site Speaker (Planned) |
V. V. Rohit Bukka |
| Abstract Scope |
Composites made from porous materials have the advantage of tunable pore size distributions which can determine the overall permeability. This study focuses on low-cost micro/ultra-filtration membranes made with natural zeolite (clinoptilolite) particles (<45 microns) in ceramic geopolymer matrix. The membranes were processed as a thin layer of the composite coated on a perforated aluminum sheet and cured under pressure at 60°C at 80% relative humidity. The porosity was tailored by varying the clinoptilolite content. The membrane microstructure, spatial distribution of zeolite particles, and macroporosity were evaluated using SEM and X-ray micro-CT. Gas adsorption and mercury intrusion porosimetry were used to characterize micro and mesoporosity, pore-size distributions and permeability. In this presentation, an integrated approach to understanding porosity, pore distribution, and permeability in these ceramic membranes will be discussed. In addition, results from both dead-end and continuous cross-flow filtration studies on produced water will be presented to compare membrane performance. |