Abstract Biobarrier combines the adsorption and biodegradation processes which are carried out simultaneously. This method can increase rate of contaminant reduction, reduce toxicity extend life activated carbon. study aims to evaluate characteristics benzene toluene on granular carbon (GAC). The ratio in expanded bed fixed determines operating conditions process experiment. results showed that...

1. Introduction Nanoporous channel systems, for example M41S-materials, form a class of very promising host systems in many fields of modern science. Various guests can be embedded into their nanometer-sized pores. Yet, directly influencing the diffusion dynamics of the incorporated guest molecules is not an easy task, even though a broad range of applications in diverse fields could profit fro...

In the present work, results of γ-irradiation on normal and functionalized SBA-15 by aurintricarboxylic acid have been reported. Characterization of normal and functionalized SBA-15 particles before and after γ-irradiation was carried out using Fourier-transform infrared technique. Aurintricarboxylic acid ligand connected to SBA-15 was also analyzed using UV/Vis spectrophotometer. The modified ...

Various nanocomposite materials play a number of important roles in modern science and technology including pharmaceutical science. Among these materials, mesoporous materials cover a large number of applications in drug delivery system. The quantitative incorporation and high dispersion of selenium nanoparticles into MCM-41 have been made possible by the coordination between Se(IV) ion and ami...

Titanium dioxide (TiO2) incorporated ordered 2D hexagonal mesoporous silica (SiO2) films on a glass substrate were fabricated for use as a catalytic nanoreactor. Films were prepared using a tetraethyl orthosilicate (TEOS) derived SiO2 sol and a commercially available dispersion of TiO2 nanoparticles (NPs) in the presence of pluronic P123 as the structure directing agent. The effect of TiO2 dopi...

A synergetic effect of nanocatalyst and ultrasonic irradiation was examined for the synthesis 4H-chromenes from benzaldehyde, cyclohexanone, malononitrile. It observed this contributory improved reaction that used highly pure products in short times highest yields. The nanocomposite includes guanidine anchored on to magnetic NiFe2O4 nanoparticles were as active base sonication compounds. produc...

Molecular dynamics simulations were conducted to evaluate the effect of water desaturation on ion and density distributions diffusion properties in a clay mineral mesopore. Simulations carried out using polarizable model (PIM) force field. Desaturation pore was responsible for significant changes localization mobility molecules ions, especially most unsaturated conditions, which charge overcomp...

Hierarchical beta zeolites obtained in the concentrated reaction mixtures (H2O/Si = 2.5) and micromesoporous materials synthesized using a dual-template approach from zeolite precursor were rigorously characterized tested sustainable environmentally friendly process of α-pinene oxide isomerization. The highest yield trans-carveol (42%) with chemopreventive activity mammary carcinogenesis was ac...