NDLI: Impact of increasing NaCl concentrations on the performance and community composition of two anaerobic reactors

Content Provider	Springer Nature Link
Author	Lefebvre, O. Quentin, S. Torrijos, M. Godon, J. J. Delgenès, J. P. Moletta, R.
Copyright Year	2007
Abstract	The anaerobic treatment of saline effluents using halophilic and halotolerant microbial consortia is of major interest. Inhibition of anaerobic digestion is known to occur at high salt content. However, it seems that the suitable adaptation of an anaerobic sludge makes possible the treatment of saline wastewater. In this study, a non-saline anaerobic sludge was inoculated in two anaerobic batch reactors operating with a different substrate (distillery vinasse and ethanol) and subjected to increasing NaCl concentrations. The performance of the digesters appeared to be highly dependent on the nature of the substrate, and a similar level of inhibition (i.e. around 90% of the specific loading rate and specific methanogenic activity) was stated at 10 g l−1 of NaCl with distillery vinasse and 60 g l−1 of NaCl with ethanol. The characterization of the microflora and its adaptation to increasing NaCl conditions were also investigated using molecular tools based on the analysis of genomic 16S rDNA. The microbial communities revealed a high diversity that could be maintained in both reactors despite the increase in NaCl concentrations.
Starting Page	61
Ending Page	69
Page Count	9
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	75
Issue Number	1
e-ISSN	14320614
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-01-24
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Anaerobic SBR Halotolerance Microbial community 16S ribosomal RNA Microbial Genetics and Genomics Microbiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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