Citric acid wastewater as electron donor for biological sulfate reduction

被引：28

作者：

Stams, Alfons J. M. ^{[1
]}

Huisman, Jacco ^{[2
]}

Garcia Encina, Pedro A. ^{[3
]}

Muyzer, Gerard ^{[4
]}

机构：

[1] Wageningen Univ, Microbiol Lab, NL-6703 HB Wageningen, Netherlands

[2] Paques BV, Balk, Netherlands

[3] Univ Valladolid, Dept Chem Engn & Environm Technol, Valladolid, Spain

[4] Delft Univ Technol, Dept Biotechnol, Delft, Netherlands

来源：

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY | 2009年 / 83卷 / 05期

关键词：

Desulfurization; Sulfate reduction; Citrate fermentation; Trichococcus; Veillonella; SP-NOV; LACTOSPHAERA-PASTEURII; RUMINOCOCCUS-PALUSTRIS; CITRATE METABOLISM; REDUCING BACTERIA; COMB-NOV; GEN-NOV; REACTOR; VEILLONELLA; RECLASSIFICATION;

D O I：

10.1007/s00253-009-1995-7

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：

Citrate-containing wastewater is used as electron donor for sulfate reduction in a biological treatment plant for the removal of sulfate. The pathway of citrate conversion coupled to sulfate reduction and the microorganisms involved were investigated. Citrate was not a direct electron donor for the sulfate-reducing bacteria. Instead, citrate was fermented to mainly acetate and formate. These fermentation products served as electron donors for the sulfate-reducing bacteria. Sulfate reduction activities of the reactor biomass with acetate and formate were sufficiently high to explain the sulfate reduction rates that are required for the process. Two citrate-fermenting bacteria were isolated. Strain R210 was closest related to Trichococcus pasteurii (99.5% ribosomal RNA (rRNA) gene sequence similarity). The closest relative of strain S101 was Veillonella montepellierensis with an rRNA gene sequence similarity of 96.7%. Both strains had a complementary substrate range.

引用

页码：957 / 963

页数：7

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