Introduction An aromatics complex is a combination of process units that can be used to convert petroleum naphtha and pyrolysis gasoline (pygas) into the basic petrochemical intermediates: Benzene Toluene and Xylenes (BTX). Benzene is a versatile petrochemical building block used in the production of more than 250 different products. Ethylbenzene, cumene, and cyclohexane are the most important ...

Grand canonical Monte Carlo (GCMC) simulations employing a rigid framework are performed to explore the adsorption behaviors of some aromatics in the purely siliceous MCM-22 zeolite, ITQ-1. Benzene, toluene, m-xylene and o-xylene are separately simulated at 315 K, investigating a series of pressure from 0.1 to 14 kPa. The potential adsorbed sites of the studied molecules are determined from the...

Demulsification is a method used to reduce or disrupt the water - crude oil emulsion system without uttering initial composition of oil. This process done by introduction chemicals called demulsifiers, which break into aqueous and organic phases. In this study, demulsifier formulated was base-catalyzed phenol-formaldehyde resin known as resoles, with ratios phenol formaldehyde, varied between 1...

Xylene isomers are crucial chemical intermediates in great demand worldwide; the almost identical physicochemical properties render their current separation approach energy consuming. In this study, we utilized soft porous coordination polymer (PCP)’s isomer-specific structural transformation, realizing o-xylene (oX) recognition/separation from binary and ternary isomer mixtures. This PCP has a...

In this study, performance evaluation for the gas-phase o-xylene removal using a xylene-acclimated biotrickling filter (BTF) was conducted. Substrate interactions during aerobic biodegradation of three poorly soluble compounds, both individually and in paired mixtures (namely, o-xylene and ethyl acetate, o-xylene and dichloromethane, which are common solvents used by pharmaceutical industry), w...

background: benzene, toluene, ethyl benzene and xylene compounds (btex) are very dangerous in terms of health and environmental and have high toxicity in aquatic environment. the purpose of this study was to investigate the performance analysis of petroleum hydrocarbons xylene using solar radiation uv/tio2 method in industrial synthetic waste . methods: an experimental-interventional study was ...

High selectively catalytic conversion of lignin-based phenols (m-cresol, p-cresol, and guaiacol) into para-/m-xylene was performed over Pt/HZSM-5 through hydrodeoxygenation and in situ methylation with methanol. It is found that the p-/m-xylene selectivity is uniformly higher than 21%, and even increase up to 33.5% for m-cresol (with phenols/methanol molar ratio of 1/8). The improved p-/m-xylen...

BDH xylene substitute, a terpene-based product, and its mixture with anhydrous alcohol were found to be excellent replacements for xylene and carbol-xylene, respectively, in the trichrome staining technique applied to sodium acetate-acetic acid-Formalin-fixed fecal smears for detection of intestinal protozoa.

Anaerobic sulfate-reducing bacteria were enriched from contaminated aquifer samples with naphthalene, o-, and m-xylene as sole carbon and energy source in the presence of Amberlite-XAD7, a solid adsorber resin. XAD7 served as a substrate reservoir maintaining a constantly low substrate concentration in the culture medium. In equilibration experiments with XAD7, the aromatic hydrocarbons needed ...

MFI zeolite membranes, especially b-oriented ones, show superb vapor permeation/separation performance for xylene isomer separation at low pressures. In industrial applications these membranes should be operated high pressures in the mode or with liquid feed pervaporation mode. This paper reports influence of activity on and membranes. High quality were synthesized an organic template modified ...