Black Carbon Increases Cation Exchange Capacity in Soils
Cornell University · CSIRO Land and Water · +3 more institutions
Abstract
Black Carbon (BC) may significantly affect nutrient retention and play a key role in a wide range of biogeochemical processes in soils, especially for nutrient cycling. Anthrosols from the Brazilian Amazon (ages between 600 and 8700 yr BP) with high contents of biomass‐derived BC had greater potential cation exchange capacity (CEC measured at pH 7) per unit organic C than adjacent soils with low BC contents. Synchrotron‐based near edge X‐ray absorption fine structure (NEXAFS) spectroscopy coupled with scanning transmission X‐ray microscopy (STXM) techniques explained the source of the higher surface charge of BC compared with non‐BC by mapping cross‐sectional areas of BC particles with diameters of 10 to 50 μm…
Citation impact
- FWCI
- 360.34
- Percentile
- 100%
- References
- 65
Authors
11Topics & keywords
- Chemistry
- Soil water
- Cation-exchange capacity
- Adsorption
- Total organic carbon
- XANES
- Carbon fibers
- Carbon black