7 results about "BTEX" patented technology

A device (1A) for detection of a BTEX component (3A) in a phase (5A) comprising a sensor (7A) for producing a signal (S) representative of the detection, the sensor comprising a layer (9A) of a material (11A) intended to be in physical contact with the phase, the material comprising a polymer including a sequence of the following formula: (I) wherein R-Bz is a unit repeated n times, n is an integer greater than 10, R is an organic group, and Bz is a substituted benzyl group of the following formula: (Bz) wherein at least three independently selected ones among Z1, Z2, Z3, Z4 and Z5 are fluorine atoms, and the at most two others are selected among hydrogen, halogen atoms, and C1 to C2 alkyl groups.

This application discloses a method and extraction head for the detection of benzene series compounds. A PAM / CNMs composite extraction head is prepared, and benzene series compounds are extracted from the headspace using this composite extraction head. The benzene series compounds are BTEX, PMA, and DPA. Gas chromatography-mass spectrometry (GC-MS) is constructed, and the benzene series compounds are detected using the extraction head. The advantages are that the PAM / CNMs composite extraction head has better extraction efficiency and mechanical stability for benzene series compounds. Applying the method of this application to the detection of benzene series compounds in actual samples demonstrates good sensitivity and practicality.

The invention discloses gram-positive staphylococcus and application of the gram-positive staphylococcus in degradation of benzene series, the gram-positive staphylococcus is named as Staphylococcus ureiticus B1, the taxonomic name of the gram-positive staphylococcus is Staphylococcus ureiticus B1, the gram-positive staphylococcus is preserved in Guangdong Microbial Culture Collection Center on May 22, 2025, and the preservation number of the gram-positive staphylococcus is GDMCCNO.66370. The gram-positive staphylococcus is named as Staphylococcus ureiticus B1, and the gram-positive staphylococcus is named as Staphylococcus ureiticus B1, is named as Staphylococcus ureiticus B1, and is preserved in the Guangdong Microbial Culture Collection Center on May 22, 2025. The Gram-positive staphylococcus capable of degrading the benzene series is obtained through environment screening and can survive in the environment with the benzene series as the unique carbon source, and experiments prove that the Gram-positive staphylococcus has efficient degradation capacity on the benzene series and can directionally degrade the benzene series, and a new path is provided for BTEX pollution treatment.

The present invention relates to an improved process and system for purifying a gas, preferably an energy gas, containing aromatic compounds and isolating a fraction of aromatic compounds from said gas. In the process according to the invention, the gas is contacted with a washing liquid in step (a), at a temperature of 15 –250 °C, to obtain a purified gas, which is depleted in aromatic compounds, and a spent washing liquid wherein the aromatic compounds are dissolved. The spent washing liquid is stripped in step (b) with a stripping gas comprising at least 0 vol.% steam, to obtain a stripped washing liquid which is advantageously reused in step (a) and a loaded stripping gas comprising the aromatic compounds. The aromatic compounds are separated from the loaded stripping gas in step (c) by condensation of the steam and / or the aromatic compounds comprised in the loaded stripping gas to obtain an immiscible composition and isolating the aromatic compounds therefrom. The cleared stripping gas which is advantageously reused in step (b).

The invention discloses inorganic modified sodium-based stripped montmorillonite for adsorbing and removing arsenic in mining area wastewater and a preparation method of the inorganic modified sodium-based stripped montmorillonite, and belongs to the technical field of environmental functional materials and wastewater treatment. Aiming at the characteristics of high acidity and complex components of arsenic-containing wastewater in the Guangxi mining area, the method comprises the following steps: firstly, efficiently stripping natural sodium bentonite (BT) by utilizing a microwave hydrothermal-ultrasonic synergistic method, and remarkably increasing the specific surface area and active sites of the natural sodium bentonite to obtain stripped bentonite (BTex); then, BTex and cellulose nanofibers (CNF-C) with the surfaces rich in carboxyl are compounded under the microwave condition, and the CNF-C / BTex composite material is prepared. The material combines the good adsorption performance of BTex on heavy metals and the three-dimensional network skeleton advantages of CNF-C, and has the advantages of large adsorption capacity, fast dynamics, wide pH adaptation range (3-7) and the like on arsenic pollutants. The preparation process is simple, efficient, low in cost and environmentally friendly, and an efficient and practical new technical scheme is provided for treatment of arsenic pollution in Guangxi mining areas.

The present invention provides processes for converting one or more bio-oils (C1-C5 alcohols and / or water with or without co-feed) to one or more C2-C5 olefins and / or one or more aromatic compounds. In one exemplary aspect, the process may be a single stage process performed in a reactor for the direct conversion of one or more bio-oils to a mixture of olefinic (e.g., C2-C5) and aromatic (e.g., BTEX) using one or more catalysts, the catalyst comprises a zeolite doped with one or more dopants and a doped or undoped alumina catalyst. Systems for performing these methods are also provided.