Quantification of Chemical States, Dissociation Constants and Contents of Oxygen-containing Groups on the Surface of Biochars Produced at Different Temperatures

• Published in: Environmental science & technology Vol. 49; no. 1; pp. 309 - 317
• Main Authors: Chen, Zaiming, Xiao, Xin, Chen, Baoliang, Zhu, Lizhong
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 06.01.2015
• Subjects: Analytical chemistry; biochar; biogeochemical cycles; Biogeochemistry; carbonization; Charcoal; dissociation; Hot Temperature; hydrogen bonding; Hydrogen bonds; hydroxyl radicals; lactones; Manure; organic matter; Oxygen - chemistry; pyrolysis; Refuse Disposal - methods; saponification; Soil; soil amendments; spectroscopy; Spectrum analysis; surface area; Temperature

Surface functional groups such as carboxyl play a vital role in the environmental applications of biochar as a soil amendment. However, the quantification of oxygen-containing groups on a biochar surface still lacks systematical investigation. In this paper, we report an integrated method combining...