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Content Provider | SpringerLink |
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Author | Paisio, Cintia E. Tala, Melina A. González, Paola S. Busto, Víctor D. Talou, Julián Rodríguez Agostini, Elizabeth |
Copyright Year | 2012 |
Abstract | Wastewater derived from leather production may contain phenols, which are highly toxic, and their degradation could be possible through bioremediation technologies.In the present work, microbial degradation of phenol was studied using a tolerant bacterial strain, named CS1, isolated from tannery sediments. This strain was able to survive in the presence of phenol at concentrations of up to 1,000 mg/L. On the basis of morphological and biochemical properties, 16S rRNA gene sequencing, and phylogenetic analysis, the isolated strain was identified as Rhodococcus sp. Phenol removal was evaluated at a lab-scale in Erlenmeyer flasks and at a bioreactor scale in a stirred tank reactor. Rhodococcus sp. CS1 was able to completely remove phenol in a range of 200 to 1,000 mg/L in mineral medium at 30 ± 2 °C and pH 7 as optimal conditions. In the stirred tank bioreactor, we studied the effect of some parameters, such as agitation (200–600 rpm) and aeration (1–3 vvm), on growth and phenol removal efficiency. Faster phenol biodegradation was obtained in the bioreactor than in Erlenmeyer flasks, and maximum phenol removal was achieved at 400 rpm and 1 vvm in only 12 h. Furthermore, Rhodococcus sp. CS1 strain was able to grow and completely degrade phenols from tannery effluents after 9 h of incubation.Based on these results, Rhodococcus sp. CS1 could be an appropriate microorganism for bioremediation of tannery effluents or other phenol-containing wastewaters. |
Starting Page | 3430 |
Ending Page | 3439 |
Page Count | 10 |
File Format | |
ISSN | 09441344 |
Journal | Environmental Science and Pollution Research |
Volume Number | 19 |
Issue Number | 8 |
e-ISSN | 16147499 |
Language | English |
Publisher | Springer-Verlag |
Publisher Date | 2012-04-15 |
Publisher Place | Berlin, Heidelberg |
Access Restriction | Subscribed |
Subject Keyword | Phenol removal Bioremediation Phenol tolerance Catechol 1,2-dioxygenase Tannery effluents Bioreactor Environment Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Industrial Pollution Prevention Atmospheric Protection/Air Quality Control/Air Pollution Analytical Chemistry |
Content Type | Text |
Resource Type | Article |
Subject | Pollution Environmental Chemistry Health, Toxicology and Mutagenesis Medicine |
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