Removal of Cr(VI) by magnetic iron oxide nanoparticles synthesized from extracellular polymeric substances of chromium resistant acid-tolerant bacterium Lysinibacillus sphaericus RTA-01

Kumar, Himanshu; Sinha, Swapan Kumar; Goud, Vaibhav V.; Das, Surajit

doi:10.1007/s40201-019-00415-5

Cited by 24 publications

(6 citation statements)

References 74 publications

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“…[71]; Rhodococcus sp. [69]; and L. sphaericus [72]. There was also better performance in terms of the removal of Fe in the amended treatments than in the control experiment, with the highest removal observed in Group B (Figure 5; Table 7).…”

Section: Bioreduction Of Metalsmentioning

confidence: 90%

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Emenike,

Omo-Okoro,

Pariatamby

et al. 2024

Soil Systems

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Approximately 95% of urban solid waste worldwide is disposed of in landfills. About 14 million metric tonnes of this municipal solid waste are disposed of in landfills every year in Malaysia, illustrating the importance of landfills. Landfill leachate is a liquid that is generated when precipitation percolates through waste disposed of in a landfill. High concentrations of heavy metal(loid)s, organic matter that has been dissolved and/or suspended, and inorganic substances, including phosphorus, ammonium, and sulphate, are present in landfill leachate. Globally, there is an urgent need for efficient remediation strategies for leachate-metal-contaminated soils. The present study expatiates on the physicochemical conditions and heavy metal(loid)s’ concentrations present in leachate samples obtained from four landfills in Malaysia, namely, Air Hitam Sanitary Landfill, Jeram Sanitary landfill, Bukit Beruntung landfill, and Taman Beringin Landfill, and explores bioaugmentation for the remediation of leachate-metal-contaminated soil. Leachate samples (replicates) were taken from all four landfills. Heavy metal(loids) in the collected leachate samples were quantified using inductively coupled plasma mass spectrometry. The microbial strains used for bioaugmentation were isolated from the soil sample collected from Taman Beringin Landfill. X-ray fluorescence spectrometry was used to analyze heavy metal(loid)s in the soil, prior to the isolation of microbes. The results of the present study show that the treatments inoculated with the isolated bacteria had greater potential for bioremediation than the control experiment. Of the nine isolated microbial strains, the treatment regimen involving only three strains (all Gram-positive bacteria) exhibited the highest removal efficiency for heavy metal(loid)s, as observed from most of the results. With regard to new findings, a significant outcome from the present study is that selectively blended microbial species are more effective in the remediation of leachate-metal-contaminated soil, in comparison to a treatment containing a higher number of microbial species and therefore increased diversity. Although the leachate and soil samples were collected from Malaysia, there is a global appeal for the bioremediation strategy applied in this study.

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Section: Bioreduction Of Metalsmentioning

confidence: 90%

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Emenike,

Omo-Okoro,

Pariatamby

et al. 2024

Soil Systems

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“…36 X-ray diffraction (XRD-Japan Rigaku Ultima IV) was utilized to determine whether crystals appeared on the bacteria's surface after treatment with Cr( vi ). 37…”

Section: Methodsmentioning

confidence: 99%

Inoculation of chromium-tolerant bacterium LBA108 to enhance resistance in radish (Raphanus sativus L.) and combined remediation of chromium-contaminated soil

Zhang,

Wang,

Tan

et al. 2024

Environ. Sci.: Processes Impacts

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“…Iron NPs synthesized from algae was mediated with the biomolecules from algal cell illustrated more excellent stability, high reactivity, and proficient toxic pollutants reduction in the environment. On the other hand, the biogenic role of Lysinibacillus sphaericus in the production of magnetic oxide NPs intended to remove Cr (VI) contamination from the surroundings (Kumar et al, 2019). The authors reported the employ of exopolysaccharides (EPS) matrix of biofilm derived from L. sphaericus as a superior reducing, capping, and stabilizing agent, acquiring several binding sites for different metal ions.…”

Section: Heavy Metalsmentioning

confidence: 99%

A review on nanobioremediation approaches for restoration of contaminated soil

Rajput¹,

Minkina²,

Kumari³

et al. 2022

Eurasian Journal of Soil Science (Ejss)

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Nanotechnological approaches are emerging as one of the most contemporary restoration strategies that may be used to remove a variety of contaminants from the environment, including heavy metals, organic and inorganic pollutants. The application of nanoparticles (NPs) is entrenched with biological processes to boost up the removal of toxic compounds from contaminated soils. Many efforts have been taken to increase the effectiveness of phytoremediation such as the addition of chemical additives, application of rhizobacteria, and genetic engineering, etc. In this context, the integration of nanotechnology with bioremediation has introduced new dimensions to the reclamation methods. Thus, advanced remediation methods that combine nanotechnology with phytoremediation and bioremediation, where nanoscale process regulation aids in the absorption and breakdown of pollutants. NPs absorb/adsorb a variety of contaminants and also catalyze reactions by lowering the energy required for their breakdown due to unique surface properties. As a result, these nanobioremediation procedures decrease the accumulation of contaminants while simultaneously limiting their dispersal from one medium to another. Therefore, the present review is dealing with all the possibilities of the application of NPs for restoration of contaminated soils.

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Removal of Cr(VI) by magnetic iron oxide nanoparticles synthesized from extracellular polymeric substances of chromium resistant acid-tolerant bacterium Lysinibacillus sphaericus RTA-01

Cited by 24 publications

References 74 publications

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Inoculation of chromium-tolerant bacterium LBA108 to enhance resistance in radish (Raphanus sativus L.) and combined remediation of chromium-contaminated soil

A review on nanobioremediation approaches for restoration of contaminated soil

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