• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
搜索

Author:

Shang, H.-L. (Shang, H.-L..) | Peng, Y.-Z. (Peng, Y.-Z..) (Scholars:彭永臻) | Zhang, J.-R. (Zhang, J.-R..) | Wang, S.-Y. (Wang, S.-Y..) (Scholars:王淑莹)

Indexed by:

Scopus PKU CSCD

Abstract:

The experiment investigated the nitrous oxide production under different C/N ratios during denitrification, taking nitrate and nitrite as electron acceptor respectively. Ethanol was selected as carbon source. The C/N ratios were 0, 1.2, 2.4, 3.5, 5.0 and 20 when nitrate was taken as electron acceptor and C/N ratios 0, 1.8, 2.4, 3.0, 4.3, 5.2, 6.6, 20.6 when electron acceptor was nitrite. The results indicated that: the optimum C/N ratio was 3.0 taking nitrite as electron acceptor and the N2O production was 0.044 mg·L-1; the optimum C/N ratio was 5.0 taking nitrate as electron acceptor and the N2O production was 0.135 mg·L-1 which was 3 times higher than that of nitrite as electron acceptor. Though the electron acceptor changed, the trend of N2O production was similar: when carbon source was badly insufficient, the production of N2O and denitrification rate were both quite small; the N2O production increased with the increasing of the quantity of carbon source; when the carbon source was excessive, the N2O production sharply raised. Consequendy, compared to complete nitrification and denitrification, short-cut nitrification and denitrification could save 40% carbon source. Moreover, controlling C/N = 3 could reduce the production of N2O in short-cut nitrification.

Keyword:

C/N ratio; Denitrification; Nitrate; Nitrite; Nitrous oxide

Author Community:

  • [ 1 ] [Shang, H.-L.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Peng, Y.-Z.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Zhang, J.-R.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 4 ] [Wang, S.-Y.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

Reprint Author's Address:

  • 彭永臻

    [Peng, Y.-Z.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

Show more details

Related Keywords:

Related Article:

Source :

Environmental Science

ISSN: 0250-3301

Year: 2009

Issue: 7

Volume: 30

Page: 2007-2012

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

Online/Total:474/5440211
Address:BJUT Library(100 Pingleyuan,Chaoyang District,Beijing 100124, China Post Code:100124) Contact Us:010-67392185
Copyright:BJUT Library Technical Support:Beijing Aegean Software Co., Ltd.