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- W4311821451 endingPage "138" @default.
- W4311821451 startingPage "128" @default.
- W4311821451 abstract "In situ aging can change biochar properties, influencing their ecosystem benefits or risks over time. However, there is a lack of field verification of laboratory methods that attempt simulation of long-term natural aging of biochar. We exploited a decade-scale natural charcoal (a proxy for biochar) aging event to determine which lab-aging methods best mimicked field aging. We oxidized charcoal by ultraviolet A radiation (UVA), H2O2, or monochloramine (NH2Cl), and compared it to 10-year field-aged charcoal. We considered seven selected charcoal properties related to surface chemistry and organic matter release, and found that oxidation with 30% H2O2 most representatively simulated 10-year field aging for six out of seven properties. UVA aging failed to approximate oxidation levels while showing a distinctive dissolved organic carbon (DOC) release pattern. NH2Cl-aged charcoal was the most different, showing an increased persistent free radical (PFR) concentration and lower hydrophilicity. All lab oxidation techniques overpredicted polycyclic aromatic hydrocarbon release. The O/C ratio was well-correlated with DOC release, PFR concentration, surface charge, and charcoal pH, indicating the possibility to accurately predict biochar aging with a reduced suite of physicochemical properties. Overall, our rapid and verified lab-aging methods facilitate research toward derisking and enhancing long-term benefits of biochar application." @default.
- W4311821451 created "2022-12-29" @default.
- W4311821451 creator A5000358111 @default.
- W4311821451 creator A5005158168 @default.
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- W4311821451 creator A5041834634 @default.
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- W4311821451 creator A5073233844 @default.
- W4311821451 creator A5075366111 @default.
- W4311821451 creator A5081251356 @default.
- W4311821451 date "2022-12-16" @default.
- W4311821451 modified "2023-10-15" @default.
- W4311821451 title "Rapid Simulation of Decade-Scale Charcoal Aging in Soil: Changes in Physicochemical Properties and Their Environmental Implications" @default.
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