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Black carbon-mediated reduction of 2,4-dinitrotoluene by dithiothreitol.
- Source :
-
Journal of environmental quality [J Environ Qual] 2013 May-Jun; Vol. 42 (3), pp. 815-21. - Publication Year :
- 2013
-
Abstract
- By using various types of black carbon (BC), including chemically converted graphene (CCG), multiwalled carbon nanotubes (MWCNT), and granular activated carbon (GAC), BC-mediated reduction was investigated with 2,4-dinitrotoluene (DNT), a model nitroaromatic compound. We hypothesized that by providing sorption and electron transfer sites, BC can be used as a catalyst to accelerate DNT reduction by dithiothreitol (DTL), a thiol reductant. Results from batch experiments showed that CCG, MWCNT, and GAC could promote reduction of DNT by DTL. The yield ratio of the two aminonitro intermediates was approximately 1:1, which was consistent with that in a graphite system. However, fullerene did not significantly enhance the reduction of DNT, likely due to being a π acceptor. Kinetic data analysis showed that removal of DNT in the presence of BC and DTL was linearly proportional to the electrical conductivity of BC, suggesting that the graphitic structure of BC may be responsible for DNT removal. Our results indicate that the presence of BC materials may affect the fate of nitroaromatic compounds under electron-rich conditions.<br /> (Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.)
- Subjects :
- Catalysis
Charcoal chemistry
Kinetics
Dithiothreitol
Graphite
Subjects
Details
- Language :
- English
- ISSN :
- 0047-2425
- Volume :
- 42
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Journal of environmental quality
- Publication Type :
- Academic Journal
- Accession number :
- 23673948
- Full Text :
- https://doi.org/10.2134/jeq2012.0411