Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74630
Title: The potential value of biochar in the mitigation of gaseous emission of nitrogen
Authors: Thangarajan, R
Bolan, NS
Kunhikrishnan, A
Wijesekara, H
Xu, Y
Tsang, DCW 
Song, H
Ok, YS
Hou, D
Keywords: Biochar
Gaseous emission
Nitrification inhibitors
Nitrogen transformations
Soil organic amendments
Issue Date: 2018
Publisher: Elsevier
Source: Science of the total environment, 2018, v. 612, p. 257-268 How to cite?
Journal: Science of the total environment 
Abstract: Nitrogen (N) losses through gaseous emission of ammonia (NH3) and nitrous oxide (N2O) can contribute to both economic loss and environmental degradation. This study examined the effect of biochar and a chemical nitrification inhibitor, dicyandiamide (DCD), on N transformation and N losses via gaseous emission of NH3 and N2O from agricultural soils treated with a range of organic and inorganic N sources. The addition of DCD reduced N2O emission from both organic and inorganic N sources treated soils by 75%, but increased ammonium (NH4 +) concentration and subsequently induced high NH3 emission from the soils. In contrast, the addition of biochar reduced both N2O and NH3 emissions from organic and inorganic N sources treated soils by 23% and 43%, respectively. The effectiveness of biochar and DCD in reducing NH3 volatilization and N2O emission depends on the nature of the N sources and their initial mineral N concentration. The study demonstrated that biochar can be used to mitigate N losses resulting from NH3 volatilization and N2O emission.
URI: http://hdl.handle.net/10397/74630
ISSN: 0048-9697
EISSN: 1879-1026
DOI: 10.1016/j.scitotenv.2017.08.242
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