The potential value of biochar in the mitigation of gaseous emission of nitrogen
- Authors
- Thangarajan, Ramya; Bolan, Nanthi S.; Kunhikrishnan, Anitha; Wijesekara, Hasintha; Xu, Yilu; Tsang, Daniel C. W.; Song, Hocheol; Ok, Yong Sik; Hou, Deyi
- Issue Date
- Jan-2018
- Publisher
- ELSEVIER
- Keywords
- Biochar; Gaseous emission; Soil organic amendments; Nitrogen transformations; Nitrification inhibitors
- Citation
- SCIENCE OF THE TOTAL ENVIRONMENT, v.612, pp.257 - 268
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENCE OF THE TOTAL ENVIRONMENT
- Volume
- 612
- Start Page
- 257
- End Page
- 268
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190910
- DOI
- 10.1016/j.scitotenv.2017.08.242
- ISSN
- 0048-9697
- 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.
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