Steam-activation increased CH4 emission of stover biochar but decreased it for wood biochar by 14%-70%. Biochar generally increased CH4 emission but reduced N2O emission by 10%-41%. Emission of N2O was 17% lower for maize-stover biochar compared to Eucalyptus-wood biochar, and 3% lower for 350C compared to 550C pyrolysis temperature. Emission of CH4 was 21% higher for activated stover biochar compared to Eucalyptus-wood biochar and 10% lower for 350C compared to 550C pyrolysis temperature. No difference in net CO2 equivalent was observed among biochar grades.
DOI:
https://doi.org/10.1002/jpln.201300495Altmetric score:
Dimensions Citation Count:
Publication year
2014
Authors
Fungo B; Guerena D; Thiong'o M K; Lehmann J; Neufeldt H; Kalbitz K
Language
English
Keywords
greenhouse gases, temperature, soil science, steam activation
