Effects of BTEX on the Removal of Acetone in a Coaxial Non-Thermal Plasma Reactor: Role Analysis of the Methyl Group

The removal of acetone and benzene series (BTEX) under individual and concurrent conditions is carried out in a coaxial nonthermal plasma (NTP) reactor. The results show that the benzene series has a significant negative impact on acetone conversion and CO₂ selectivity under NTP treatment. Furthermo...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2018-04, Vol.23 (4), p.890
Main Authors: Hou, Liyuan, Li, Xiang, Xie, Deyuan, Wang, Haining
Format: Article
Language:English
Subjects:
Acetone
Benzene
BTEX
Byproducts
Carbon dioxide
Coexistence
Formic acid
Hydrocarbons
Hydrogen ions
Hydroxyl radicals
methyl group
non-thermal plasma
p-Xylene
Phenolic compounds
Phenols
Reactors
Selectivity
Thermal plasmas
Xylene
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Summary:The removal of acetone and benzene series (BTEX) under individual and concurrent conditions is carried out in a coaxial nonthermal plasma (NTP) reactor. The results show that the benzene series has a significant negative impact on acetone conversion and CO₂ selectivity under NTP treatment. Furthermore, it is found that -xylene significantly promotes CO selectivity under co-treatment with acetone because of greater CO generation. Based on the results of transient FTIR, MS, and GC-MS, it is seen that quantities of formic acid, formaldehyde, and ring-opening byproducts from benzene series decomposition are reduced, while quantities of aromatic byproducts with carboxyl, phenolic, and aldehyde groups on the benzene ring increase under coexistence conditions. With the help of theoretical calculation and kinetic analysis, hydrogen abstraction from the methyl group and active hydroxyl radical consumption are proposed as critical factors in the BTEX inhibition effect on acetone degradation.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules23040890