Chromium Precipitation Activity and Molecular Characterization of Sulfate-Reducing Bacteria

Retnaningrum, Endah; Yulianti, Dwiana Muflihah; Wilopo, Wahyu

doi:10.22146/jag.48737

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…However, the presence of heterotrophic microorganisms in compost may also contribute to the removal of lead (Pb) in the treatment through absorption mechanisms on the cell membrane of microorganisms and also, chemically, heavy metals will be chelated on the ligand in compost. On the other hand, microorganisms in compost do not survive when they are treated with acid mine drainage that has a low pH (Zhang and Wang, 2014;Ayangbenro et al, 2018;Retnaningrum et al, 2019;Xu and Chen, 2020). The reduction of Pb heavy metal ions in their oxidized form by sulfate-reducing bacteria can occur in two ways.…”

Section: Change In Phmentioning

confidence: 99%

Treatment of compost as a source of organic material for bacterial consortium in the removal of sulfate and heavy metal lead (Pb) from acid mine drainage

Fahruddin

Nafie

Abdullah

et al. 2021

J.Degrade.Min.Land Manage.

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Acid mine drainage can pollute the environment because it is acidic and contains toxic heavy metals. The purpose of this research was the application of a bacterial consortium to remove sulfate and reduce heavy metal lead (Pb) in acid mine drainage. The application was done in the bioreactor for acid mine drainage treatment that was treated with compost. Observations were made every five days and included observation of total bacterial growth using the Standard Plate Count (SPC) method, determination of sulfate content by gravimetry, determination of pH by use of pH meter, and determination of the concentration of heavy metal Pb using the AAS method. As a result, it was obtained that the treatment of non-sterile compost in acid mine drainage was able to reduce the initial heavy metal concentration of Pb of 84% and reduce the sulfate content by 72%, along with increasing pH and an increase in total bacterial growth. Meanwhile, sterile compost treatment was only able to reduce the Pb content by 63% and sulfate by 54%. This result indicates that the addition of compost is more effective than the treatment of sterile compost.

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Section: Change In Phmentioning

confidence: 99%

Treatment of compost as a source of organic material for bacterial consortium in the removal of sulfate and heavy metal lead (Pb) from acid mine drainage

Fahruddin

Nafie

Abdullah

et al. 2021

J.Degrade.Min.Land Manage.

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Microbial Mechanisms for Remediation of Hexavalent Chromium and their Large-Scale Applications; Current Research and Future Directions

Arishi¹,

Mashhour²

2021

J Pure Appl Microbiol

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The increase of anthropogenic activities has led to the pollution of the environment by heavy metals, including chromium (Cr). There are two common oxidative states of Cr that can be found in industrial effluents the trivalent chromium Cr(III) and the hexavalent chromium Cr(VI). While the hexavalent chromium Cr(VI) is highly toxic and can trigger serious human health issues, its reduced form, the trivalent chromium Cr(III), is less toxic and insoluble. Leather tanning is an important industry in many developing countries and serves as a major source of Cr(VI) contamination. Globally, tannery factories generate approximately 40 million m3 of Cr-containing wastewater annually. While the physico-chemical treatments of tannery wastewater are not safe, produce toxic chemicals and require large amounts of chemical inputs, bioremediation using chromium-resistant bacteria (CRB) is safer, efficient and does not produce toxic intermediates. Chromium-resistant bacteria (CRB) utilise three mechanisms for Cr(VI) removal: biotransformation, biosorption and bioaccumulation. This review will evaluate the three Cr(VI) detoxification mechanisms used by bacteria, their limitations and assess their applications for large-scale remediation of Cr(VI). This can be helpful for understanding the nature of Cr(VI) remediation mechanisms used by bacteria, therefore, bridging the gap between laboratory findings and industrial application of microorganisms for Cr(VI) removal.

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Chromium Precipitation Activity and Molecular Characterization of Sulfate-Reducing Bacteria

Cited by 2 publications

References 13 publications

Treatment of compost as a source of organic material for bacterial consortium in the removal of sulfate and heavy metal lead (Pb) from acid mine drainage

Treatment of compost as a source of organic material for bacterial consortium in the removal of sulfate and heavy metal lead (Pb) from acid mine drainage

Microbial Mechanisms for Remediation of Hexavalent Chromium and their Large-Scale Applications; Current Research and Future Directions

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