Arsenic-resistant bacteria in groundwater: Isolation and biochemical characterization

Ramirez K.; Gonzales-Condori E.G.; Choquenaira-Quispe C.; Yucra-Condori H.R. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2022) · DOI: 10.18687/laccei2022.1.1.426

Resumen

Arsenic is a frequent contaminant of water, especially in geographical areas with the presence of volcanoes. This semi-metal is considered toxic to humans. Therefore, its removal from water resources is a constant challenge in the scientific community. The present study aims to search for bacteria capable of resisting high concentrations of arsenic and could eventually be useful in the removal of this contaminant. Three bacteria capable of tolerating 2mM arsenic were isolated and morphological and biochemical characterization was performed. In addition, by sequencing the 16S rRNA gene, it was identified that they belong to Cupriavidus and Pseudomonas and they were registered in GenBank. These bacteria are potential agents for removing arsenic from water. However, further studies are needed to evaluate this property.

Instituciones: Universidad Nacional de San Agustín de Arequipa; Universidad Tecnológica del Perú; Universidad Católica de Santa María