Nitrogen transformations in intensive aquaculture system and its implication to climate change through nitrous oxide emission
- Authors
- Hu, Zhen; Lee, Jae Woo; Chandran, Kartik; Kim, Sungpyo; Sharma, Keshab; Brotto, Ariane Coelho; Khanal, Samir Kumar
- Issue Date
- 2월-2013
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Nitrous oxide; Biological nitrogen transformations; Greenhouse gas; Intensive aquaculture system; Climate change
- Citation
- BIORESOURCE TECHNOLOGY, v.130, pp.314 - 320
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 130
- Start Page
- 314
- End Page
- 320
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/104034
- DOI
- 10.1016/j.biortech.2012.12.033
- ISSN
- 0960-8524
- Abstract
- The rapid development of aquaculture could result in significant environmental concerns such as eutrophication and climate change. However, to date, very few studies have been conducted to investigate nitrogen transformations in aquaculture systems; and specifically the emission of nitrous oxide (N2O), which is an important greenhouse gas and ozone-depleting substance. In this study, nitrogen transformations in intensive laboratory-scale Chinese catfish (Clarias fuscus) aquaculture systems were investigated by identifying and quantifying N2O emissions. Results indicated that about 1.3% of the nitrogen input was emitted as N2O gas. Dissolved oxygen (DO) concentrations and feeding rates had significant effects on N2O emissions. Higher N2O emissions were obtained in aquaculture systems with lower DO concentrations and higher feeding rates. Both nitrification and denitrification appeared to be responsible for the emissions of N2O. Key factors which correlated with the N2O emission rate in aquaculture systems were NO2-, DO and total ammonia nitrogen concentrations. (C) 2012 Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Graduate School > Department of Environmental Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.