Assessment and Comparison of Electrokinetic and Electrokinetic-bioremediation Techniques for Mercury Contaminated Soil

Azhar, A T S; Nabila, A T A; Nurshuhaila, M S; Embong, Zaidi; Azim, M A M; Farhana, S M S

doi:10.1088/1757-899x/160/1/012077

Cited by 19 publications

(6 citation statements)

References 7 publications

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“…Lysinibacillus commonly exists in various environments such as sediment or wastewater. [32][33][34] Although the capability of several Lysinibacillus strains using electrodes as electron acceptors have been reported, 33,34 our results present the first evidence that the genus Lysinibacillus can reduce iron.…”

Section: Visualizing and Isolating Single Cell Ferm From Multispeciesmentioning

confidence: 60%

Visualizing and isolating iron-reducing microorganisms at single cell level

Gan

Luo

et al. 2020

Preprint

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Iron-reducing microorganisms (FeRM) play key roles in many natural and engineering processes. Visualizing and isolating FeRM from multispecies samples are essential to understand the in-situ location and geochemical role of FeRM. Here, we visualized FeRM by a “turn-on” Fe2+-specific fluorescent chemodosimeter (FSFC) with high sensitivity, selectivity and stability. This FSFC could selectively identify and locate active FeRM from either pure culture, co-culture of different bacteria or sediment-containing samples. Fluorescent intensity of the FSFC could be used as an indicator of Fe2+ concentration in bacterial cultures. By integrating FSFC with a single cell sorter, we obtained three FSFC-labeled cells from an enriched consortia and all of them were subsequently evidenced to be capable of iron-reduction and two unlabeled cells were evidenced to have no iron-reducing capability, further confirming the feasibility of the FSFC.ImportanceVisualization and isolation of FeRM from samples containing multispecies are commonly needed by researchers from different disciplines, such as environmental microbiology, environmental sciences and geochemistry. However, no available method has been reported. In this study, we provid a solution to visualize FeRM and evaluate their activity even at single cell level. Integrating with single cell sorter, FeRM can also be isolated from samples containing multispecies. This method can be used as a powerful tool to uncover the in-situ or ex-situ role of FeRM and their interactions with ambient microbes or chemicals.

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Section: Visualizing and Isolating Single Cell Ferm From Multispeciesmentioning

confidence: 60%

Visualizing and isolating iron-reducing microorganisms at single cell level

Gan

Luo

et al. 2020

Preprint

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show abstract

Section: Visualizing and Isolating Single Cell Ferm From Multispecies Consortiamentioning

confidence: 82%

Visualizing and Isolating Iron-Reducing Microorganisms at the Single-Cell Level

Gan

Luo

et al. 2021

Appl Environ Microbiol

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Iron-reducing microorganisms (FeRM) play key roles in many natural and engineering processes. Visualizing and isolating FeRM from multispecies samples are essential to understand the in-situ location and geochemical role of FeRM. Here, we visualized FeRM by a “turn-on” Fe2+-specific fluorescent chemodosimeter (FSFC) with high sensitivity, selectivity and stability. This FSFC could selectively identify and locate active FeRM from either pure culture, co-culture of different bacteria or sediment-containing samples. Fluorescent intensity of the FSFC could be used as an indicator of Fe2+ concentration in bacterial cultures. By integrating FSFC with a single cell sorter, we obtained three FSFC-labeled cells from an enriched consortia and all of them were subsequently evidenced to be capable of iron-reduction and two unlabeled cells were evidenced to have no iron-reducing capability, further confirming the feasibility of the FSFC. IMPORTANCE Visualization and isolation of FeRM from samples containing multispecies are commonly needed by researchers from different disciplines, such as environmental microbiology, environmental sciences and geochemistry. However, no available method has been reported. In this study, we provide a solution to visualize FeRM and evaluate their activity even at single cell level. Integrating with single cell sorter, FeRM can also be isolated from samples containing multispecies. This method can be used as a powerful tool to uncover the in-situ or ex-situ role of FeRM and their interactions with ambient microbes or chemicals.

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“…One such study by Rosestolato et al (2015) on bio-electrokinetic method was reported in which, 400 kg of mercury contaminated soil was successfully remediated by with a maximum removal of 60%. In a study of EK assisted bioremediation carried out by Azhar et al (2016a) removal of mercury from the contaminated soil was reported. Electrokinetic study was conducted using electric current of voltage 50V for a period of 7 days, which was followed by microbial remediation using Lysinibacillus fusiformis bacteria.…”

Section: Electro-kinetic Microbial Remediation Approachmentioning

confidence: 99%