Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2015-01-01

Journal: BIORESOURCE TECHNOLOGY

Included Journals: PubMed、EI、SCIE

Volume: 175

Page Number: 602-605

ISSN: 0960-8524

Key Words: Simultaneous nitrification and denitrification; Paracoccus versutus; Fe2+ solution; C/N ratio; NO2--N

Abstract: Paracoccus versutus LYM was characterized with the ability of simultaneous nitrification and denitrification (SND) in presence of NH4+-N and NO3--N (140 mg/L-N each). However, there was approximate 95.80 mg/L NO2--N left during SND process. Fe2+ was added in the SND medium and it benefited bacterial growth and further converted NO2--N a little. Besides, remaining NO2--N could be completely reduced by adding carbon donors in presence of NH4+-N and NO3--N, whose converting efficiencies also reached 97.09% and 96.34%, respectively. And N-2 stayed as the main product of SND process. While NO2--N and NH4+-N were present simultaneously, strain LYM could also remove nitrogen compounds thoroughly with sufficient carbon source. But there was no NO2--N reduced as sole nitrogen source in the medium even if C/N ratio reached as high as 30. (C) 2014 Elsevier Ltd. All rights reserved.