NDLI: Identification and Characterization of Peruvian Native Bacterial Strains as Bioremediation of Hg-Polluted Water and Soils Due to Artisanal and Small-Scale Gold Mining in the Secocha Annex, Arequipa

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Identification and Characterization of Peruvian Native Bacterial Strains as Bioremediation of Hg-Polluted Water and Soils Due to Artisanal and Small-Scale Gold Mining in the Secocha Annex, Arequipa

Content Provider	MDPI
Author	Fernando, Fernandez-F Patricia, Lopez-C Badhin, Gómez Alberto, Cáceres-Huambo Febres-Molina, Camilo Gamero-Begazo, Pamela L. Bernabe-Ortiz, Julio Cesar Aguilar-Pineda, Jorge Alberto
Copyright Year	2022
Description	The water and soils pollution due to mercury emissions from mining industries represents a serious environmental problem and continuous risk to human health. Although many strategies have been designed for the recovery or elimination of this metal from environmental sources, microbial bioremediation has proven to be the most effective and environmentally friendly strategy and thus control heavy metal contamination. The main objective of this work, using native bacterial strains obtained from contaminated soils of the Peruvian region of Secocha, was to identify which of these strains would have growth capacity on mercury substrates to evaluate their adsorption behavior and mercury removal capacity. Through a DNA analysis (99.78% similarity) and atomic absorption spectrometry, the Gram-positive bacterium Zhihengliuella alba sp. T2.2 was identified as the strain with the highest mercury removal capacity from culture solutions with an initial mercury concentration of 162 mg·L $-1$ . The removal capacity reached values close to 39.5% in a period of incubation time of 45 days, with maximum elimination efficiency in the first 48 h. These results are encouraging and show that this native strain may be the key to the bioremediation of water and soils contaminated with mercury.
Starting Page	2669
e-ISSN	20711050
DOI	10.3390/su14052669
Journal	Sustainability
Issue Number	5
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2022-02-24
Access Restriction	Open
Subject Keyword	Sustainability Environmental Engineering Mercury Removal Bioremediation Native Bacterial Strains Zhihengliuella Alba
Content Type	Text
Resource Type	Article

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