The aim of this study was the development and characterization of lipid nanocarriers using food grade components for oral delivery of Serenoa repens CO2 extract, namely microemulsions (MEs) and self-microemulsifying drug delivery systems (SMEDDSs) to improve the oral absorption. A commercial blend (CB) containing 320 of S. repens CO2 extract plus the aqueous soluble extracts of nettle root and ...

The effects of preparation parameters on the performance and morphology of polydimethylsiloxane/ polysulfone (PDMS/PSf) membranes were investigated. The PDMS layer is mainly used for sealing the defects of the PSf selective layer. The membrane morphologies were characterized by using scanning electron microscopy (SEM). The CO2/CH4 separation performance of membranes was studied by a pure gas pe...

This study proposes a strategy for optimal design of hollow fiber membrane networks for post combustion carbon capture from power plant multicomponent flue gas. A mathematical model describing multicomponent gas permeation through a separation membrane was customized into the flowsheet modeling package ASPEN PLUS. An N-stage membrane network superstructure was defined considering all possible f...

A mixture of threonine dehydrogenase and aminoacetone synthetase will catalyze the conversion of L-threonine to glycine. The overall reaction likely involves the conversion of L-threonine, NAD+, and CoA to glycine, NADH, and acetyl-CoA. Physical separation of L-threonine dehydrogenase from aminoacetone synthetase results in the formation of aminoacetone and CO2 from their substrates. A physical...

Amorphous polymers are often used for gas separation but have a trade-off between permeability and selectivity. Here, the effect of chemical composition temperature on solubility in well-ordered LC polymer membranes is investigated. Membranes with various compositions monomethacrylate (M1) crown ether functionality to enhance CO2 smectic diacrylate (M2) cross-linker were fabricated, while all h...

Abstract A sulfonic acid-functionalized trimethyl-substituted polyimide was synthesized by reacting 4,4?-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 3,5-diamino-2,4,6-trimethylbenzenesulfonic acid (TrMSA). The properties of 6FDA-TrMSA were compared to the related 6FDA-derived analogues made from 2,4,6-trimethylbenzene-1,3-diamine (6FDA-TrMPD) 3,5-diamino-2,4,6-trimethylbenzene ben...

The main goal of this work was to synthesize and evaluate the effect of dehydration temperature on the potential application of hydroxy sodalite zeolite membrane. Hydroxy sodalite zeolite membranes were synthesized via direct hydrothermal method onto a tubular alumina support without seeding in a hot air oven. The synthesized membranes were characterized by X-ray diffraction (XRD) and scanning ...

The effects of synthesis time and the number layers were investigated on Na-X zeolite sublayer for fabricating a PEBA/Na-X hybrid membrane. CO2/N2 separation was considered as objective function to obtain an effective sublayer. SEM AFM studies synthesized sublayers reveal that 6 hour one layer give (ZSL6-1) with sub-micron thickness (< 1µm), roughness 13 nm. N2 permeation (11900 GPU) shows low ...

Chemical doping of ceramic oxides may provide a possible route for realizing high-efficient oxygen transport membranes. Herein, we present study the previously unreported dual-phase mixed-conducting oxygen-permeable membranes with compositions 60 wt.% Ce0.85Pr0.1M0.05O2-δ-40 wt.%Pr0.6Sr0.4Fe0.8Al0.2O3-δ (M = Fe, Co, Ni, Cu) (CPM-PSFA) adding sintering aids, which is expected to not only improve...