Potential of Extremophiles for Bioremediation

Kaushik, Suresh; Alatawi, Aishah; Djiwanti, Setyowati Retno; Pande, Amit; Skotti, Efstathia; Soni, V. K.

doi:10.1007/978-981-15-7447-4_12

Cited by 15 publications

(9 citation statements)

References 143 publications

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“…A recent review by Kranthi et al (2018), presents a comprehensive and elaborated assessment of the efficiency of EPS from different microorganisms to control heavy metal contamination and deal with environment maintenance and human health (Kranthi et al, 2018). Besides, literature is also abundant discussing the role that extremophiles (Supplementary Figure 2) can play in the environmental remediation of metal and organic pollutants (Peeples, 2014;Giovanella et al, 2020;Kaushik et al, 2021), xenobiotic compounds (Jeong and Choi, 2020;Shukla and Singh, 2020), radionucleotides (Marques, 2018), plastics and various agrochemicals (Kour et al, 2021), and synthetic pollutants (Bhatt et al, 2021).…”

Section: Bio-sorption and Bioaccumulation Of Heavy Metalsmentioning

confidence: 99%

Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

et al. 2021

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Various microorganisms thrive under extreme environments, like hot springs, hydrothermal vents, deep marine ecosystems, hyperacid lakes, acid mine drainage, high UV exposure, and more. To survive against the deleterious effect of these extreme circumstances, they form a network of biofilm where exopolysaccharides (EPSs) comprise a substantial part. The EPSs are often polyanionic due to different functional groups in their structural backbone, including uronic acids, sulfated units, and phosphate groups. Altogether, these chemical groups provide EPSs with a negative charge allowing them to (a) act as ligands toward dissolved cations as well as trace, and toxic metals; (b) be tolerant to the presence of salts, surfactants, and alpha-hydroxyl acids; and (c) interface the solubilization of hydrocarbons. Owing to their unique structural and functional characteristics, EPSs are anticipated to be utilized industrially to remediation of metals, crude oil, and hydrocarbons from contaminated wastewaters, mines, and oil spills. The biotechnological advantages of extremophilic EPSs are more diverse than traditional biopolymers. The present review aims at discussing the mechanisms and strategies for using EPSs from extremophiles in industries and environment bioremediation. Additionally, the potential of EPSs as fascinating biomaterials to mediate biogenic nanoparticles synthesis and treat multicomponent water contaminants is discussed.

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Section: Bio-sorption and Bioaccumulation Of Heavy Metalsmentioning

confidence: 99%

Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

et al. 2021

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“…Rhodanobacter sp. are some of the examples of extremophiles used in the field of bioremediation to remediate petroleum products, heavy metals, pesticides, wastewater and radionuclides (Kaushik et al, 2021).…”

Section: Bacillus Safensis Haloferax Mediterranei Nitrosopumilus Maritimus Pseudomonas Stutzeri Halococcus Salifodinae Halobacterium Norimentioning

confidence: 99%

https://www.stenvironment.org/images/artical/PAPER_2_IJEHS_%20Vol_3_Issue_1_2021.pdf

2021

IJEHS

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“…In recent years, large areas of the Earth have been affected by industrialization processes that have triggered an increase in pollution of the natural environment [ 1 , 2 , 3 ]. Metal pollution caused by natural or anthropogenic processes [ 4 ] tends to persist in the environment indefinitely [ 5 , 6 , 7 ] due to its low ability to be removed, thus becoming more hazardous to the environment [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…Among the different methods by which metals can be removed from the environment, bioremediation has become the most sought-after technique as it is considered the safest, cleanest, most economical, and environmentally friendly process [ 3 , 8 ]. Because organisms can adopt different strategies to tolerate these pollutants, the bioremediation technique offers the possibility of eliminating pollutants using the natural biological activity of certain organisms, which, unlike traditional techniques, makes it a low-cost technique with low technological difficulty, high social acceptance and with the capacity to be carried out at the site where the pollution has occurred [ 7 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…Because organisms can adopt different strategies to tolerate these pollutants, the bioremediation technique offers the possibility of eliminating pollutants using the natural biological activity of certain organisms, which, unlike traditional techniques, makes it a low-cost technique with low technological difficulty, high social acceptance and with the capacity to be carried out at the site where the pollution has occurred [ 7 , 15 ]. Most bioremediation research has been focused on organisms of the Bacteria domain [ 3 ], with a special focus on organic pollutants. Nevertheless, in recent years, the molecular biology of extremophilic archaea has aroused great interest in the field of bioremediation [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Haloferax mediterranei Strain R4 Capabilities for Cadmium Removal from Brines

2023

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Haloferax mediterranei has revealed a high bioremediation potential for several inorganic anions (e.g., nitrates and nitrites) and metals from hypersaline waters and brines. However, it is unclear, to date, whether this microorganism allows Cd (II) bioremediation. Consequently, the main objective of this work was to assess the Cd (II) bioremediation potential of Hfx. mediterranei R4. To this end, Hfx. mediterranei cell growth rate and metal bioaccumulation were investigated using different culture media (complex, CM, and defined medium, DM) containing Cd (II) up to 1 mM. In addition, the elemental profile of the biomass (i.e., Al, Ba, Ca, Co, Cu, Fe, K, Mg, Mn, Na, Ni, Sr and Zn) has also been monitored to gain insight into the metabolic processes that may be taking place at the intracellular level for Cd (II) removal. Because of the formation of CdS precipitate, CM is not a suitable culture media for evaluating Cd bioremediation since metal concentration could not be appropriately controlled. When operating in DM, it was observed that the cell doubling time increases three times in the presence of Cd (II). Hfx. mediterranei can bioaccumulate Cd, showing the highest significant accumulation at concentrations of 0.4 mM (108 ± 12 mg Cd/g dry tissue). Finally, the presence of Cd (II) affects the content of K, Mg, Mn and Zn in the biomass, by increasing K levels up to 27 ± 18% and Mn up to 310 ± 140% and reducing Mg levels up to 55 ± 36% and Zn up to 30 ± 4%. These results suggest that different mechanisms are involved in Cd (II) tolerance by Hfx. mediterranei, resulting in increasing the cell concentration of stress-tolerant elements in the biomass (K and Mn), while lowering the concentration of elements which Cd (II) competes with (Mg and Zn), and that all affects the physiological response of the organism by decreasing its growth rate.

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Potential of Extremophiles for Bioremediation

Cited by 15 publications

References 143 publications

Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

https://www.stenvironment.org/images/artical/PAPER_2_IJEHS_%20Vol_3_Issue_1_2021.pdf

Evaluation of Haloferax mediterranei Strain R4 Capabilities for Cadmium Removal from Brines

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