Presentations by University of Texas at Austin
Matches: 11
Enzyme-Enhanced Membrane Bioreactors: Upgrading Wastewater Treatment For Reuse
The presence of pharmaceuticals and personal care products in ambient water, drinking water and reclaim/reuse water has garnered growing regulatory and pubic concern. An oxido-reductase enzyme, laccase, shows promise in providing more effective treatment than advanced oxidation and biological degradation....
Novel Fouling Resistant Membranes for Produced Water
This research focuses on a versatile new platform of membrane surface treatments to reduce fouling in ultrafiltration, microfiltration, nanofiltration, and reverse osmosis membranes. The new methodology may be applied to existing membranes after manufacture and installation as well as to membranes during their manufacturing process....
Reverse Osmosis Recovery Maximization
The presentation will focus on the use of interstage processes to maixmize water recovery (and thereby minimize the volume of concentrate) in inland brackish water desalination. Two methodologies will be discussed: electrodialysis and a three-stage process of antiscalant oxidation, precipitation, and solid/liquid separation....
Investigation of Electrodialysis for RO Concentrate Treatment
A laboratory investigation of electrodialysis shows that ED is technically feasible of treating brackish water RO concentrate and may prove to be a viable treatment option for minimizing brine production....
Inland BWRO Concentrate Concentration by Electrodialysis
Reverse osmosis (RO) membrane desalination may be employed as a technically feasible treatment process for brackish water (BW) sources, but the product recovery ratio for inland BWRO applications is typically from 75-90%. The economic and environmental costs of concentrate disposal significantly limit the development of inland RO applications. Thus...
Improving Ceramic Membranes by Adherence of Silver Nanoparticles
Ceramic membranes were recently approved for use in municipal water treatment plants in Colorado, California, and Texas (AWWA, 2011). While their use for drinking water applications is novel in the United States, they have been used in Japan and France for over a decade. Ceramic membranes already hold promise in terms of their extreme durability an...
Performance of Commercial Asymmetric Cellulose Acetate Membrane Compared to Polydopamine Modified Thin Film Composite Membranes for Forward Osmosis
In forward osmosis applications the cellulose acetate (CA) membrane offers the best performance but carries the limitation of not tolerating a basic feed water. This characteristic eliminates the CA membrane from use with the ammonia-carbon dioxide (NH3-CO2) draw solution. Treatment of conventional reverse osmosis membrane with polydopamine improve...
Cation Exchange in Forward Osmosis: Study of pH Effects and Alternative Selective Layers to Mitigate it
This paper discusses research aimed at reducing cation exchange in Forward osmosis membranes. The effect of pH and modifying the FO membrane are reported....