Microbial processes and bacterial populations associated to anaerobic treatment of sulfate-rich wastewater
dc.contributor.author | Sarti, Arnaldo | |
dc.contributor.author | Pozzi, Eloisa | |
dc.contributor.author | Chinalia, Fabio A. | |
dc.contributor.author | Ono, Alexandre | |
dc.contributor.author | Foresti, Eugenio | |
dc.date.accessioned | 2010-01-11T16:11:22Z | |
dc.date.available | 2010-01-11T16:11:22Z | |
dc.date.issued | 2010-02 | |
dc.description.abstract | A pilot-scale (1.2 m3) anaerobic sequencing batch biofilm reactor (ASBBR) containing mineral coal for biomass attachment was fed with sulfate-rich wastewater at increasing sulfate concentrations. Ethanol was used as the main organic source. Tested COD/sulfate ratios were of 1.8 and 1.5 for sulfate loading rates of 0.65–1.90 kgSO42−/cycle (48 h-cycle) or of 1.0 in the trial with 3.0 gSO42− l−1. Sulfate removal efficiencies observed in all trials were as high as 99%. Molecular inventories indicated a shift on the microbial composition and a decrease on species diversity with the increase of sulfate concentration. Beta-proteobacteria species affiliated with Aminomonas spp. and Thermanaerovibrio spp. predominated at 1.0 gSO42− l−1. At higher sulfate concentrations the predominant bacterial group was Delta-proteobacteria mainly Desulfovibrio spp. and Desulfomicrobium spp. at 2.0 gSO42− l−1, whereas Desulfurella spp. and Coprothermobacter spp. predominated at 3.0 gSO42− l−1. These organisms have been commonly associated with sulfate reduction producing acetate, sulfide and sulfur. Methanogenic archaea (Methanosaeta spp.) was found at 1.0 and 2.0 gSO42− l−1. Additionally, a simplified mathematical model was used to infer on metabolic pathways of the biomass involved in sulfate reduction. | en_UK |
dc.identifier.citation | Arnaldo Sarti, Eloisa Pozzi, Fabio A. Chinalia, Alexandre Ono, Eugenio Foresti, Microbial processes and bacterial populations associated to anaerobic treatment of sulfate-rich wastewater, Process Biochemistry, Volume 45, Issue 2, February 2010, Pages 164-170 | en_UK |
dc.identifier.issn | 1359-5113 | |
dc.identifier.uri | http://dx.doi.org/10.1016/j.procbio.2009.09.002 | |
dc.identifier.uri | http://hdl.handle.net/1826/4132 | |
dc.language.iso | en | en_UK |
dc.publisher | Elsevier | en_UK |
dc.subject | Sulfate reduction | en_UK |
dc.subject | Anaerobic reactor | en_UK |
dc.subject | DNA library | en_UK |
dc.subject | Biofilm | en_UK |
dc.subject | Phylogenetic characterization | en_UK |
dc.subject | Mineral coal | en_UK |
dc.title | Microbial processes and bacterial populations associated to anaerobic treatment of sulfate-rich wastewater | en_UK |
dc.type | Article | en_UK |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Microbial_Processes_and_Bacterial_Populations-2010.pdf
- Size:
- 590.04 KB
- Format:
- Adobe Portable Document Format
License bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- license.txt
- Size:
- 1.88 KB
- Format:
- Item-specific license agreed upon to submission
- Description: