Microbial transformation to remediate mercury pollution: strains isolation and laboratory study

Jing, Xudong; Tuo, Lu; Sun, Fangqiang; Xie, Jinchen; Ma, D.; Wang, X.; Dong, Qiangfei

doi:10.1007/s13762-022-04158-z

Cited by 2 publications

(1 citation statement)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… Biosorption of Hg: Defined as the ability of microorganisms to capture heavy metals by increasing their biomass (Vijayaraghavan and Yun 2008 ; Beveridge and Murray 1980 ). The heavy metal is retained in the bacterial cell wall, without the need for intracellular bioaccumulation (Jing et al 2022 ; Baran et al 2022 ; Yao et al 2023 ; Zhao et al 2023 ). Phytoextraction (Yu et al 2022 ; Sitarska et al 2023 ; Nnaji et al 2023 ):.…”

Section: Effects Of Mercury Pollution On Systems and Organismsmentioning

confidence: 99%

Bioremediation of environments contaminated with mercury. Present and perspectives

González-Reguero

Mora

Lobo

et al. 2023

World J Microbiol Biotechnol

View full text Add to dashboard Cite

Mercury is a highly toxic heavy metal whose emission sources can be both natural and the result of anthropic activity. Its polluting action on soils, and its ability to spread through the atmosphere and aquatic environments, constitutes a threat to human and environmental health; both for its bioaccumulation capacity and for biomagnification through the trophic chain. For this reason, there is a growing scientific and social interest in the reduction of this heavy metal in ecosystems. Bioremediation based on the use of microorganisms and/or plants is postulated as a sustainable alternative to traditional physicochemical methods. The main strategies used for this purpose (individually or in combination) are the volatilization of the contaminant, biosorption, phytoextraction and phytoremediation. All these tools are based on taking advantage of the natural and evolutionary capacity that different organisms have developed to adapt to the presence of various pollutants in the environment. Based on the consulted bibliography, these bioremediation methodologies focus on the use of microorganisms (freely or associated with plants) have been successfully applied in different ecosystems, postulating themselves as a respectful alternative for the future for the recovery of degraded environments. For these reasons there is a growing interest in the scientific community to design and use new techniques in a “One Health” context, which allow interpreting the positive impact of bioremediation. In this sense, the universalization of Omics techniques has allowed to abound in the knowledge of new bacterial taxa, and their biotechnological application. This study pretends to cover the present knowledge about mercury bioremediation techniques. In the same way, some new techniques and perspectives are presented in order to expand the frontiers of future research.

show abstract

Section: Effects Of Mercury Pollution On Systems and Organismsmentioning

confidence: 99%

Bioremediation of environments contaminated with mercury. Present and perspectives

González-Reguero

Mora

Lobo

et al. 2023

World J Microbiol Biotechnol

View full text Add to dashboard Cite

show abstract

Exploration of bacterial strains with bioremediation potential for mercury and cyanide from mine tailings in "San Carlos de las Minas, Ecuador"

Calderón-Tapia,

Medina-Barrera,

Chuquin-Vasco

et al. 2024

AIMSES

View full text Add to dashboard Cite

<abstract> Ecuador is a developing country that relies on mining as a significant source of economic income every year; however, there needs to be more studies on the soil pollution caused by mining over time. Biological remediation as an alternative to the use of physical and chemical methods offers a more cost-effective and environmentally friendly means to counteract the negative impacts that the presence of heavy metals in mining tailings soils can cause. This study focused on soil sampling from the mining tailings of the San Carlos de las Minas sector, in the Zamora Chinchipe province in Ecuador, to find potential bacterial strains that can degrade two specific contaminants, mercury (Hg) and cyanide (CN-). For this purpose, 68 soil subsamples were collected. pH, electrical conductivity, moisture, and the concentration of the contaminants were analyzed and measured. The initial concentration of CN- was 0.14 mg/kg, and of Hg was 88.76 mg/kg. From the soil samples, eight bacterial strains were isolated, characterized at macroscopic and microscopic levels, and identified at the molecular level. The bacteria were then subjected to degradability tests for CN- and Hg, obtaining interesting results. The degradation capacity of CN- stood out for the strains <italic>Micrococcus aloeverae</italic> and <italic>Pseudomonas alcaliphila</italic>, and for the degradation of Hg, the strains <italic>Hydrogenophaga laconesensis</italic> and <italic>Micrococcus aloeverae</italic> were highlighted, achieving degradation percentages of up to 98.80%. These results emphasize the discovery of these bacterial species with potential use in cyanide and mercury remediation processes. </abstract>

show abstract

Microbial transformation to remediate mercury pollution: strains isolation and laboratory study

Cited by 2 publications

References 32 publications

Bioremediation of environments contaminated with mercury. Present and perspectives

Bioremediation of environments contaminated with mercury. Present and perspectives

Exploration of bacterial strains with bioremediation potential for mercury and cyanide from mine tailings in "San Carlos de las Minas, Ecuador"

Contact Info

Product

Resources

About