ArticleScientific reports2016
The electron donating capacity of biochar is dramatically underestimated.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Mechanism and Application of Biochar as an Electron Shuttle in the Remediation of Soil Pollutants.Toxics · 2026Review
- Biochar in Animal Agriculture: Enhancing Health, Efficiency and Environmental Sustainability.Veterinary medicine and science · 2025Review
- Geobatteries in environmental biogeochemistry: Electron transfer and utilization.Environmental science and ecotechnology · 2024Review
- Biochar, microbes, and biochar-microbe synergistic treatment of chlorinated hydrocarbons in groundwater: a review.Frontiers in microbiology · 2024Review
- Water treatment and reclamation by implementing electrochemical systems with constructed wetlands.Environmental science and ecotechnology · 2023Article
- Biochar porosity: a nature-based dependent parameter to deliver microorganisms to soils for land restoration.Environmental science and pollution research international · 2021Review
- Biochar as electron donor for reduction of N2O by Paracoccus denitrificans.FEMS microbiology ecology · 2020Article
- Article
- Typical Soil Redox Processes in Pentachlorophenol Polluted Soil Following Biochar Addition.Frontiers in microbiology · 2018Article
- Enhancing methane production from food waste fermentate using biochar: the added value of electrochemical testing in pre-selecting the most effective type of biochar.Biotechnology for biofuels · 2017Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Biochars have gathered considerable interest for agronomic and engineering applications. In addition to their high sorption ability, biochars have been shown to accept or donate considerable amounts of electrons to/from their environment via abiotic or microbial processes. Here, we measured the electron accepting (EAC) and electron donating (EDC) capacities of wood-based biochars pyrolyzed at three different highest treatment temperatures (HTTs: 400, 500, 600 °C) via hydrodynamic electrochemical techniques using a rotating disc electrode. EACs and EDCs varied with HTT in accordance with a previous report with a maximal EAC at 500 °C (0.4 mmol(e(-)).gchar(-1)) and a large decrease of EDC with HTT. However, while we monitored similar EAC values than in the preceding study, we show that the EDCs have been underestimated by at least 1 order of magnitude, up to 7 mmol(e(-)).gchar(-1) for a HTT of 400 °C. We attribute this existing underestimation to unnoticed slow kinetics of electron transfer from biochars to the dissolved redox mediators used in the monitoring. The EDC of other soil organic constituents such as humic substances may also have been underestimated. These results imply that the redox properties of biochars may have a much bigger impact on soil biogeochemical processes than previously conjectured.
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