We present a non-destructive, reusable apparatus with which to measure physical adsorption isotherms of intact porous membranes. We developed a two-piece sample container to make reliable sorption measurements of porous membranes, the properties of which may differ from those of powders due to crystal intergrowth. This novel system employs a resealable container that can be immersed in a cryoge...

A review of production of activated carbon from waste tire char is presented. This review compiles the work done by various researchers on the characterisation of activated carbon from tire char and its applications in liquid-phase adsorption. Effect of various process parameters particularly activation temperature, burn-off, surface area on the activation stage are reviewed. Influence of activ...

Biochars were produced from pine feedstock pretreated with aqueous base, NaOH, at pH 9 and 11, alkali alkaline earth metals (AAEMs) Na, K, Ca, Mg 10−3 1 M. The effects of base AAEM pretreatment on biochar surface area, pore size distribution, adsorption capacity two organic micropollutants (OMPs), 2,4-dichlorophenoxyacetic acid sulfamethoxazole, water background dissolved matter (DOM) evaluated...

We employed a polymer network to understand what properties of pyrogenic carbonaceous matter (PCM; e.g., activated carbon) confer its reactivity, which we hereinafter referred as PCM-like polymers (PLP). This approach allows us delineate the role functional groups and micropore characteristics using 2,4,6-trinitrotoluene (TNT) model contaminant. Six PLP were synthesized via cross-coupling chemi...

The process of microbubble filtration from blood is complex and highly dependent on the forces of flow and buoyancy. To protect the patient from air emboli, arterial-line filters commonly use a micropore screen, a large volume housing with purpose-built shape, and a purge port to trap, separate, and remove circulating microbubbles. Although it has been proposed that an insufficient buoyancy for...

Streptococcal growth in vivo was studied with inoculated micropore filter chambers which were implanted into the peritoneal cavities of mice. Eight of nine group A strains and one group B strain grew in vivo, achieving concentrations of 10(7) to 10(9) CFU/ml in the chambers. Experiments with the Richards strain showed that the number of viable organisms remained high at 5 and 8 weeks after infe...

A whole-blood method was used for measuring neutrophil migration in micropore membrane. The method is reproducible (coefficient of variation (CV) 10.3% and 9.8% in two normal individuals tested repeatedly) and can be performed on an 0.25 ml lithium heparin blood sample. Migration is independent of leucocyte and erythrocyte counts and is comparable with that obtained for separated cells. As in s...

Little data are available regarding L-form phagocyte interactions. Due to difficulty with more conventional methods, a serum-free technique of surface phagocytosis employing cellulose ester micropore filters, fluorochrome staining, and reflecting fluorescence microscopy was developed. Intracellular localization of L-frms was confirmed by electron microscopy. In timed experiments, phagocytosis o...

Carbon molecular sieves (CMSs) are microporous carbon materials whose special textural characteristics enable kinetic separation of gas mixtures, i.e., separation as a result of differences in the diffusion rates of the species involved. For a CMS to be useful for gas separation, it must possess a narrow pore size distribution (PSD) consisting of pore mouths of molecular sizes and a relatively ...