Integrated diversity analysis of the microbial community in a reverse osmosis system from a Brazilian oil refinery
| Autor: | Cláudio Mudado Silva, Daiane R.B. Belgini, Douglas Moreira de Oliveira, Larissa Quartaroli, Maíra Paula de Sousa, Sérgio Oliveira de Paula, Samantha Gonçalves da Fonseca, Cynthia Canêdo da Silva, R. S. L. Souza, Ana Paula Rodrigues Torres, Roberto Sousa Dias, Viviane Piccin-Santos, Valéria Maia de Oliveira, Virginia Medeiros de Siqueira |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Osmosis Microorganism Microbial Consortia 030106 microbiology Oil and Gas Industry Wastewater Biology Bacterial Physiological Phenomena Applied Microbiology and Biotechnology Microbiology Water Purification 03 medical and health sciences Microbial ecology Reverse osmosis Ecology Evolution Behavior and Systematics Bacteria Oil refinery Fungi Biodiversity Pulp and paper industry 030104 developmental biology Membrane Microbial population biology Biofilms Sewage treatment Metagenomics Brazil |
| Zdroj: | Systematic and Applied Microbiology. 41:473-486 |
| ISSN: | 0723-2020 |
| Popis: | Oil refineries are known for the large volume of water used in their processes, as well as the amount of wastewater generated at the end of the production chain. Due to strict environmental regulations, the recycling of water has now become a viable alternative for refineries. Among the many methods available to treat wastewater for reuse, the use of membranes in reverse osmosis systems stands out due to several economic and environmental benefits. However, these systems are vulnerable to contamination and deposition of microorganisms, mainly because of the feedwater quality. In this study, the microbial diversity of feedwater and reverse osmosis membranes was investigated using a combination of culture-dependent and culture-independent methods in order to characterize the microorganisms colonizing and deteriorating the membranes. In total, 37 bacterial isolates, 17 filamentous fungi and approximately 400 clones were obtained and analyzed. Among the bacterial genera identified, the most represented were Sphingobium, Acidovorax, Microbacterium, Rhizobium and Shinella. The results revealed genera that acted as candidate key players in initial biofilm formation in membrane systems, and provided important information concerning the microbial ecology of oligotrophic aquatic systems. |
| Databáze: | OpenAIRE |
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