Nitrate-reducing, sulfide-oxidizing bacteria as microbial oxidants for rapid biological sulfide removal

被引：51

作者：

De Gusseme, Bart ^{[1
]}

De Schryver, Peter ^{[1
]}

De Cooman, Michael ^{[1
]}

Verbeken, Kim ^{[3
]}

Boeckx, Pascal ^{[2
]}

Verstraete, Willy ^{[1
]}

Boon, Nico ^{[1
]}

机构：

[1] Univ Ghent, LabMET, B-9000 Ghent, Belgium

[2] Univ Ghent, Lab Appl Phys Chem ISOFYS, B-9000 Ghent, Belgium

[3] Univ Ghent, Dept Met & Mat Sci, B-9000 Ghent, Belgium

来源：

FEMS MICROBIOLOGY ECOLOGY | 2009年 / 67卷 / 01期

关键词：

microbially induced concrete corrosion (MICC); sulfate reduction; H2S production; biologically produced sulfur; nitrate reduction; electron sink; GRADIENT GEL-ELECTROPHORESIS; SULFUR; BIOOXIDATION; PERFORMANCE; INHIBITION; REDUCTION; MECHANISM; COMMUNITY; OXIDATION; KINETICS;

D O I：

10.1111/j.1574-6941.2008.00598.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The emission of hydrogen sulfide into the atmosphere of sewer systems induces the biological production of sulfuric acid, causing severe concrete corrosion. As a possible preventive solution, a microbial consortium of nitrate-reducing, sulfide-oxidizing bacteria (NR-SOB) was enriched in a continuously stirred tank reactor in order to develop a biological technique for the removal of dissolved sulfide. The consortium, dominated by Arcobacter sp., was capable of removing 99% of sulfide. Stable isotope fractioning of the sulfide indicated that the oxidation was a biological process. The capacity of the NR-SOB consortium for rapid removal of sulfide was demonstrated by using it as an inoculum in synthetic and real sewage. Removal rates up to 52 mg sulfide-S g VSS-1 h(-1) were achieved, to our knowledge the highest removal rate reported so far for freshwater species in the absence of molecular oxygen. Further long-term incubation experiments revealed the capacity of the bacteria to oxidize sulfide without the presence of nitrate, suggesting that an oxidized redox reserve is present in the culture.

引用

页码：151 / 161

页数：11

共 53 条

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