Research Abstracts

Melt-blown polypropylene fiber (MBPF) is a recently developed new material for filtration. This study evaluates the efficiency of using MBPF filter to treat reclaimed water with respect to analysis of the CODCr, SS, NH3-N and turbidity for the water samples before and after adsorption and filtration with

The solubility of C2H6 and C2F6 in two amorphous glassy fluoropolymers, Teflon® AF1600 and AF2400, has been modeled with the non equilibrium statistical associating fluid (NE-SAFT) and non equilibrium perturbed hard sphere chain (NE-PHSC) theories. Experimental swelling data during sorption are avai

Usually, the recovery of metals from ore follows a flow sheet which includes the leaching operation, the filtration and the purification concentration. However, in this work a new processing method is described. It is an electromembrane process where the ore is inserted between two membranes. It is

Composite Pd alloy membranes have been investigated as a means of reducing the membrane cost and improving H2 flux. Recently, we have been able to dramatically reduce the thickness of our Pd alloy membranes to approximately one micron. This is significant because at this thickness, it is the cost of

Biodegradable filtration membranes can be applied in food and biochemical processes to clarify products or to yield particles from suspensions, and then degrade in composting processes. In this study we developed microfiltration membranes from a polymer blend of poly(ε-caprolactone) (PCL) and poly(L

Acetic acid is a compound commonly found in hemicellulosic hydrolysates. This weak acid strongly influences the bioconversion of sugar containing hydrolysates. Previous investigators have used anion exchange resins for acetic acid removal from different hemicellulosic hydrolysates. In this study, th

The sorption and diffusion properties of water vapor in a new, short-side-chain perfluorosulfonic acid ionomer (PFSI) membrane have been investigated at different temperatures in the range of 35÷120°C. Experiments show that pretreatment of the membranes under vacuum at low temperatures leaves in the

A liquid/liquid extraction process mediated by membrane contactors containing fixed recognition sites is being proposed for isomer discrimination. Cyclodextrins (CDs) are able to form inclusion complex of different stability with organic molecules depending on their shape and size. In this paper, we

The removal of nitrate from contaminated groundwater via polyelectrolyte-enhanced ultrafiltration (UF) was investigated using different chelating polymers and membrane pore sizes. Although the percentage polymer rejection by membranes slightly decreased with higher chelating polyelectrolyte dosages,

Ultrathin alumina hollow fibers were prepared by a phase inversion and a sintering method. A polysulfone solution containing well-dispersed alumina powders is spun, which is then sintered at elevated temperature. To increase the packing density of alumina powers in the hollow fiber, 1,4-dioxane was