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Degradation of xylene

Web6 rows · The initial steps of anaerobic m -xylene degradation were elucidated in TAX-12960 sp. strain T, ... WebJun 15, 2016 · For the aromatic compounds tested, Pseudomonas sp. DZ13 could grow on toluene and xylene (low biomass yield), accompanied with the slow degradation of MTBE. All of the n -alkanes tested in this study (C 5 -C 8 ) could support the growth of Pseudomonas sp. DZ13 with a much higher degradation rate than that of aromatic …

Bacterial aerobic degradation of benzene, toluene, ethylbenzene …

WebFeb 16, 2024 · To characterize the xylene degradation pathway of marine strain KU68F T, we screened for a possible gene encoding an initial oxygenase in the first step of the pathway using PCR. As a result, a xylA gene encoding a toluene/xylene methyl-monooxygenase was detected with the primers XYLA-F/XYLA-R. WebJan 31, 2024 · The degradation of xylene released from fluorocarbon coating solvents by the g-C3N4/TiO2 composite coatings was investigated under simulated solar irradiation. The degradation efficiency of the coating mixed with DBD-modified 10%-g-C3N4/TiO2 showed a stable, long-lasting, and significantly higher activity compared to the coatings mixed … city of erie municipal building https://deeprootsenviro.com

m-xylene degradation (anaerobic) Pathway - PubChem

WebOct 29, 2024 · The kinetics of photocatalytic degradation of p‐xylene under combined illumination of ultraviolet and visible lights over obtained UiO‐66‐NH2 and LaFeO3 thin films were carried out in a ... WebAt 40°C, the degradation rate is the highest, reaching 63.25%. With an increasing inoculum amount of strain H-16, the degradation rate of xylene gradually increased, and the … In organic chemistry, xylene or xylol (from Greek ξύλον (xylon) 'wood'; IUPAC name: dimethylbenzene) are any of three organic compounds with the formula (CH3)2C6H4. They are derived from the substitution of two hydrogen atoms with methyl groups in a benzene ring; which hydrogens are substituted determines … See more Xylenes are an important petrochemical produced by catalytic reforming and also by coal carbonisation in the manufacture of coke fuel. They also occur in crude oil in concentrations of about 0.5–1%, depending on the … See more Xylene was first isolated and named in 1850 by the French chemist Auguste Cahours (1813–1891), having been discovered as a constituent of wood tar. See more The physical properties of the isomers of xylene differ slightly. The melting point ranges from −47.87 °C (−54.17 °F) (m-xylene) to 13.26 °C … See more Generally, two kinds of reactions occur with xylenes: those involving the methyl groups and those involving the ring C–H bonds. Being benzylic and hence weakened, the C–H … See more Xylenes are produced by the methylation of toluene and benzene. Commercial or laboratory-grade xylene produced usually contains about 40–65% of m-xylene and up to 20% each of See more Terephthalic acid and related derivatives p-Xylene is the principal precursor to terephthalic acid and dimethyl terephthalate, both monomers used in the production of polyethylene terephthalate (PET) plastic bottles and polyester clothing. 98% of p-xylene production, … See more Xylene is flammable but of modest acute toxicity, with LD50 ranges from 200 to 5000 mg/kg for animals. Oral LD50 for rats is 4300 mg/kg. The principal mechanism of detoxification is … See more donor strategy template

Degradation of benzene, toluene, and xylene with high gaseous …

Category:Synergistic degradation performance of UV/TiO2 photocatalysis …

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Degradation of xylene

A Novel Photocatalytic Functional Coating Applied to the …

WebFeb 19, 2024 · In this study, a series of HZSM-5 catalysts were prepared by the chemical liquid-phase deposition method, and low concentration toluene degradation was carried out in an atmospheric pressure dielectric barrier discharge (DBD) reactor. The catalysts were characterized by X-ray powder diffraction (XRD), SEM, TEM, and N2 adsorption analysis … WebDec 24, 2024 · The degradation difficulties of BTX were ranked as follows: benzene > toluene > xylene. For example, when the SIE was 400 J l −1, the degradation efficiency …

Degradation of xylene

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WebXylene degradation and limiting factors in the clays. As xylene occurs in the clays in a sorbed status, it could be greatly protected against microbial degrada- tion,6–8 however, … WebSynergistic degradation performance of UV/TiO 2 photocatalysis and biotrickling filtration inoculated with Aspergillus sp. S1 for gaseous m-xylene. Qingping Du, Corresponding …

WebApr 10, 2024 · As shown in Figs. 5b and 5h, the degradation rates of benzene and p-chlorotrifluorotoluene were the highest in the culture system with glycerol and sodium lactate as additional carbon, while the degradation rates of toluene, ethylbenzene, chlorobenzene and m-xylene were significantly higher in the culture group with glycerinum and starch as ... WebJan 31, 2024 · The degradation of xylene released from fluorocarbon coating solvents by the g-C3N4/TiO2 composite coatings was investigated under simulated solar irradiation. …

WebSep 30, 2010 · A considerable amount of gasoline enters the environment as result of leakage from underground storage tanks, accidental spills, or improper waste disposal practices (Bowlen and Kosson, 1995).When gasoline is in contact with water, benzene, toluene, ethylbenzene and the xylene isomers (BTEX) account for as much as 90% of … WebAt 40°C, the degradation rate is the highest, reaching 63.25%. With an increasing inoculum amount of strain H-16, the degradation rate of xylene gradually increased, and the degradation rate could reach 86.1% when the inoculation amount was 25%. A neutral environment was more conducive to the degradation and removal of xylene.

WebFeb 15, 2024 · For o-xylene degradation under different atmospheric gases, the removal (RE) and mineralization efficiency (ME) over the AT sample followed the order (Fig. 2 c): air > O 2 > N 2 + H 2 O > N 2. The RE and ME of o -xylene over the catalyst were 62.8% and 45.2% under O 2 atmosphere (with main oxidants as •O 2 − and h + ), respectively.

WebSeveral aerobic metabolic pathways for the degradation of benzene, toluene, ethylbenzene and xylene (BTEX), which are provided by two enzymic systems (dioxygenases and … city of erie garbage pickup scheduleWebApr 10, 2024 · The LC50 for rats in a 4 hour inhalation exposure to mixed xylenes was 29500 mg/m3. The cause of death is usually respiratory failure due to CNS depression. Vapours of xylenes are also respiratory tract irritants. Short and long-term effects. NTP (1986) report results of dosing F344/N rats by gavage with mixed xylenes (60% m … city of erie pa budgetWebJan 6, 2024 · Although the o-xylene degradation ability of Rhodococcus (Charniauskaya et al. 2024) is well known still, the degradation potential of the isolated Rhodococcus … city of erie pa planning commissionWebFeb 8, 2024 · Among monoaromatic hydrocarbons, xylenes, especially the ortho and para isomers, are the least biodegradable compounds in oxygen-limited subsurface environments. Although much knowledge has been gained regarding the anaerobic degradation of xylene isomers in the past 2 decades, the diversity of those bacteria … do northerners like country musicWebJan 2, 2024 · Alvarez et al reported that enhanced degradation of xylene occurred in the presence of toluene and benzene by pseudomonas sp. strain CFS-215 incubations . Microorganisms inside the BTF3 more likely belong to xylene-degrader since the BTF3 was supplied only with xylene before binary test. This also can explain similar phenomenon … city of erie pa fire inspectorWebJul 15, 2009 · Degradation tests were carried out using a retention time of 54 s (see Fig. 2).The composition of reaction gas was xylene: 80 ppm (p-xylene), 70 ppm (m-xylene), … city of erie pa gisWebThe primary objective of this present study was to reveal the diversity of xylene-degrading bacteria at a legacy BTEX-contaminated site where xylene is the predominant contaminant, along with ... city of erie parking ticket