The role of black carbon as a catalyst for environmental redox transformation
Abstract
Black carbon (BC) is an important class of geosorbents that control the fate and transport of organic pollutants in soil and sediment. We previously demonstrated a new role of BC as an electron transfer mediator in the abiotic reduction of nitroaromatic and nitramine compounds by Oh and Chiu (Environ Sci Technol 43:6983-6988, 2009). We proposed that BC can catalyze the reduction of nitro compounds because it contains microscopic graphitic (graphene) domains, which facilitate both sorption and electron transfer. In this study, we assessed the ability of different types of BC--graphite, activated carbon, and diesel soot--to mediate the reduction of 2,4-dinitrotoluene (DNT) and 2,4-dibromophenol (DBP) by H(2)S. All three types of BC enhanced DNT and DBP reduction. H(2)S supported BC-mediated reduction, as was observed previously with a thiol reductant. The results suggest that BC may influence the fate of organic pollutants in reducing subsurface environments through redox transformation in addition to sorption.
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Various carbonaceous materials (graphene, black carbon, and biochar) can act as electron transfer mediators in biotic redox behaviour.
“various carbonaceous materials (graphene, black carbon, and biochar, etc.) could act as electron transfer mediators in biotic redox behaviour.[168][169][170]”
From Sustainable remediation with an electroactive biochar system: mechanisms and perspectives (2020) · cites this paper as [169]
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References 44 · Cited by 48
- Authors
- Oh, S.-Y., Son, J.-G., Lim, O.-T., & Chiu, P. C.
- Affiliations
- University of Ulsan (KR)
- University of Delaware (US)
- Corresponding author
- Chiu, Pei C.
- Venue
- Environmental Geochemistry and Health
- Published
- 2011-08-17
- Volume
- 34
- Issue
- S1
- Pages
- 105-113
- ISSN
- 0269-4042 (ISSN-L)
- 1573-2983
- OpenAlex
- W2092408573
- Cited by
- 48
- References
- 44
- Citations by year
- 2025: 2 · 2023: 1 · 2022: 8 · 2021: 5 · 2020: 7 · 2019: 6 · 2018: 3 · 2017: 2 · 2016: 4 · 2015: 3 · 2014: 3 · 2013: 3 · 2012: 1
- FWCI
- 1.32
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Environmental Geochemistry and Health (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
- Keywords
- black carbon, redox transformation, nitroaromatic compounds, nitro compounds, 2,4-dinitrotoluene, 2,4-dibromophenol, hydrogen sulfide reduction, diesel soot, activated carbon, graphite
- MeSH terms
- Carcinogens, Catalysis, Charcoal, Chromatography, High Pressure Liquid, Dinitrobenzenes, Environmental Pollutants, Graphite, Hydrogen Sulfide, Oxidation-Reduction, Phenols, Soot
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