Abstract: A computer model is used to investigate the microbial uptake of oxygen and a carbon-source substrate for biofilms growing on gas-permeable, hollow-fiber membranes and impermeable solid supports of similar geometry. Substrate ...

Abstract: Separation of volatile organic contaminants from water using a microporous hollow‐fiber membrane/oil stripping system is evaluated. Countercurrent flow of water and oil on opposite sides of an air‐filled gas‐permeable ...

Abstract: Several investigators have shown that membrane oxygenation provides a number of advantages in biological treatment. These include operational flexibility, reduced energy requirements, and less stripping of volatile compounds. ...

Abstract: Throughout both urban and rural areas across the United States, rivers and streams periodically suffer from low dissolved oxygen concentrations. Current aeration technologies are often expensive or ineffective. Aeration ...

Abstract: A one-dimensional contaminant fate and transport model was developed to simulate reductive dechlorination of perchloroethene (PCE) in an anaerobic aquifer supplied with hydrogen via a gas-permeable membrane curtain. The ...

Abstract: A technology was developed to stimulate autotrophic biological denitrification by supplying hydrogen

Abstract: The concept of bubbleless aeration with microporous hollow fiber membranes is tested in a system that does not require external energy input, other than pressurizing oxygen, and is designed to add oxygen to surface waters. ...