The Bolivian Altiplano has an ongoing history of heavy metal pollution due to years of uncontrolled mining in this region. Heavy metals are a threat to natural environments such as lakes and soils with cultural and economic importance for the local communities. The extreme environmental conditions of the Bolivian Altiplano translate into alkaline soils with high concentration of minerals, high radiation and considerable daily temperature oscillations. Halophilic and halotolerant microorganisms isolated from such environments have interesting biotechnological applications including bioremediation of metal polluted waters and soils. Here, bacterial strains from the Bolivian Altiplano were characterized and biosorption capacity evaluated for three heavy metals (Pb+2, Cd+2 and Zn+2) in variable concentrations. Four strains were able to grow in multimetal medium with a final concentration of 100 mg. L-1, with a higher tolerance to Pb+2. The four isolates were selected for further characterization and were identified as different species of Halomonas genus. The best heavy metal biosorption rates for the four isolates were found at pH 7 and 37°C. Additionally, the fastest uptake rate for all three metals was under 120 minutes in the four chosen isolates. The biosorption process was best described by Langmuir isotherm for all isolates exposed to the three metals separately. The four Halomonas isolates showed a bioremediation potential for heavy metal polluted substrates, although the highest biosorption capacity values were from isolate Ss_is3 notably for Pb+2. This study provides new information about the potential biotechnological capacities of Halomonas strains isolated from mineral soils in the Andes.
| Published in | International Journal of Ecotoxicology and Ecobiology (Volume 8, Issue 2) |
| DOI | 10.11648/j.ijee.20230802.11 |
| Page(s) | 13-23 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2023. Published by Science Publishing Group |
Bioremediation, Biosorption Capacity, Halophile, Heavy Metals, Isolates
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APA Style
Andrea Silva Claros, Erick Ferrufino Guardia, Paola Ayala-Borda. (2023). Characterization and Heavy Metal Bioremediation Potential of Halomonas Isolates from the Bolivian Altiplano. International Journal of Ecotoxicology and Ecobiology, 8(2), 13-23. https://doi.org/10.11648/j.ijee.20230802.11
ACS Style
Andrea Silva Claros; Erick Ferrufino Guardia; Paola Ayala-Borda. Characterization and Heavy Metal Bioremediation Potential of Halomonas Isolates from the Bolivian Altiplano. Int. J. Ecotoxicol. Ecobiol. 2023, 8(2), 13-23. doi: 10.11648/j.ijee.20230802.11
AMA Style
Andrea Silva Claros, Erick Ferrufino Guardia, Paola Ayala-Borda. Characterization and Heavy Metal Bioremediation Potential of Halomonas Isolates from the Bolivian Altiplano. Int J Ecotoxicol Ecobiol. 2023;8(2):13-23. doi: 10.11648/j.ijee.20230802.11
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Download@article{10.11648/j.ijee.20230802.11,
author = {Andrea Silva Claros and Erick Ferrufino Guardia and Paola Ayala-Borda},
title = {Characterization and Heavy Metal Bioremediation Potential of Halomonas Isolates from the Bolivian Altiplano},
journal = {International Journal of Ecotoxicology and Ecobiology},
volume = {8},
number = {2},
pages = {13-23},
doi = {10.11648/j.ijee.20230802.11},
url = {https://doi.org/10.11648/j.ijee.20230802.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijee.20230802.11},
abstract = {The Bolivian Altiplano has an ongoing history of heavy metal pollution due to years of uncontrolled mining in this region. Heavy metals are a threat to natural environments such as lakes and soils with cultural and economic importance for the local communities. The extreme environmental conditions of the Bolivian Altiplano translate into alkaline soils with high concentration of minerals, high radiation and considerable daily temperature oscillations. Halophilic and halotolerant microorganisms isolated from such environments have interesting biotechnological applications including bioremediation of metal polluted waters and soils. Here, bacterial strains from the Bolivian Altiplano were characterized and biosorption capacity evaluated for three heavy metals (Pb+2, Cd+2 and Zn+2) in variable concentrations. Four strains were able to grow in multimetal medium with a final concentration of 100 mg. L-1, with a higher tolerance to Pb+2. The four isolates were selected for further characterization and were identified as different species of Halomonas genus. The best heavy metal biosorption rates for the four isolates were found at pH 7 and 37°C. Additionally, the fastest uptake rate for all three metals was under 120 minutes in the four chosen isolates. The biosorption process was best described by Langmuir isotherm for all isolates exposed to the three metals separately. The four Halomonas isolates showed a bioremediation potential for heavy metal polluted substrates, although the highest biosorption capacity values were from isolate Ss_is3 notably for Pb+2. This study provides new information about the potential biotechnological capacities of Halomonas strains isolated from mineral soils in the Andes.},
year = {2023}
}
TY - JOUR T1 - Characterization and Heavy Metal Bioremediation Potential of Halomonas Isolates from the Bolivian Altiplano AU - Andrea Silva Claros AU - Erick Ferrufino Guardia AU - Paola Ayala-Borda Y1 - 2023/06/21 PY - 2023 N1 - https://doi.org/10.11648/j.ijee.20230802.11 DO - 10.11648/j.ijee.20230802.11 T2 - International Journal of Ecotoxicology and Ecobiology JF - International Journal of Ecotoxicology and Ecobiology JO - International Journal of Ecotoxicology and Ecobiology SP - 13 EP - 23 PB - Science Publishing Group SN - 2575-1735 UR - https://doi.org/10.11648/j.ijee.20230802.11 AB - The Bolivian Altiplano has an ongoing history of heavy metal pollution due to years of uncontrolled mining in this region. Heavy metals are a threat to natural environments such as lakes and soils with cultural and economic importance for the local communities. The extreme environmental conditions of the Bolivian Altiplano translate into alkaline soils with high concentration of minerals, high radiation and considerable daily temperature oscillations. Halophilic and halotolerant microorganisms isolated from such environments have interesting biotechnological applications including bioremediation of metal polluted waters and soils. Here, bacterial strains from the Bolivian Altiplano were characterized and biosorption capacity evaluated for three heavy metals (Pb+2, Cd+2 and Zn+2) in variable concentrations. Four strains were able to grow in multimetal medium with a final concentration of 100 mg. L-1, with a higher tolerance to Pb+2. The four isolates were selected for further characterization and were identified as different species of Halomonas genus. The best heavy metal biosorption rates for the four isolates were found at pH 7 and 37°C. Additionally, the fastest uptake rate for all three metals was under 120 minutes in the four chosen isolates. The biosorption process was best described by Langmuir isotherm for all isolates exposed to the three metals separately. The four Halomonas isolates showed a bioremediation potential for heavy metal polluted substrates, although the highest biosorption capacity values were from isolate Ss_is3 notably for Pb+2. This study provides new information about the potential biotechnological capacities of Halomonas strains isolated from mineral soils in the Andes. VL - 8 IS - 2 ER -
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