Isolation and characterization of sulfur-utilizing denitrifiers from the sulfur-oxidizing denitrification process

被引：10

作者：

Tian, D ^{[1
]}

Shon, HK ^{[1
]}

Chun, DJ ^{[1
]}

Jin, CS ^{[1
]}

Gwon, EM ^{[1
]}

Chung, WJ ^{[1
]}

机构：

[1] Myongji Univ, Dept Environm Engn & Biotechnol, Yongin 449728, South Korea

来源：

BIOTECHNOLOGY LETTERS | 2003年 / 25卷 / 19期

关键词：

autotroph; denitrification; heterotroph; sulfur-oxidizing denitrifier;

D O I：

10.1023/A:1025678914181

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Of 14 potential sulfur-oxidizing strains, Pseudomonas sp. B21 and Agrobacterium sp. B19 were considered as denitrifiers. Under aerobic conditions, with S-0 as electron donor, maximum cell growth rates were 0.022 (B21) and 0.043 h(-1) (B19). Both grew optimally at pH 7.5 and 28degreesC. When NO3-N was increased from 10 to 200 mg l(-1) the efficiency of nitrate removal of each strain gradually decreased, from 60 to 40%. Addition of suitable organic compounds (C/N<4.2) increased the nitrate removal efficiencies of both strains, indicating their mixotrophic characters.

引用

页码：1605 / 1608

页数：4

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