Corrigendum: Effect of Divalent Cations (Cu, Zn, Pb, Cd, and Sr) on Microbially Induced Calcium Carbonate Precipitation and Mineralogical Properties

Kim, Yumi; Kwon, Sunki; Roh, Yul

doi:10.3389/fmicb.2021.721478

Cited by 41 publications

(4 citation statements)

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“…The genome size of S. pasteurii KCTC 3558 was determined to be 3.3 Mb. The growth medium for S. pasteurii cultivation and carbonate precipitation contained 10 g/L of yeast extract, 5 g/L of proteose peptone, 1 g/L of glucose, and 24 g/L of NaCl [10]. The medium was autoclaved at 121 • C and 1.2 kgf/cm 2 for 20 min.…”

Section: Bacterial Cultivationmentioning

confidence: 99%

“…MMICP has been employed in a variety of environmental and geotechnical applications [9]. For example, MICP can contribute to the immobilization of contaminants in groundwater, including ionized heavy metals and radionuclides such as strontium [10][11][12]. In addition, divalent cations have been found to be substituted for Ca or co-precipitated with the CaCO 3 produced by microorganisms.…”

Section: Introductionmentioning

confidence: 99%

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Microbial Precipitation of Calcium Carbonate for Crack Healing and Stabilization of Sandy Soils

Kim,

Roh

2024

Applied Sciences

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Microbially induced calcium carbonate (CaCO3) precipitation (MICP) can improve the shear strength of soil via biocementation while reducing its porosity and hydraulic conductivity. The purpose of this study was to evaluate the effect of the addition of bacterial metabolites and montmorillonite on the crack healing and biocementation of sandy soil during the MICP process. Cracks were generated by drying wet soil samples in Petri dishes, after which they were sprayed with one of four treatments: deionized water, a cementation solution, bacteria mixed with the cementation solution, and bacterial metabolites mixed with the cementation solution. After five cycles of this spray treatment, the surface crack ratio was observed to decrease by about 71% when living cells were used and by about 80% when microbial metabolites were added. However, the crack reduction ratio was relatively low when treated with water (28%) and the cementation solution alone (48%). To investigate the effect of adding a phyllosilicate to improve the strength of sandy soil, MICP was induced in sand mixed with 0–30% montmorillonite (MMT). As a result, the soil strength increased with higher levels of MMT, indicating that MMT contributed to soil stabilization as a colloid for CaCO3 precipitation and via adhesion between sand grains. Therefore, for the crack healing and stabilization of sandy soil, the addition of bacterial metabolites and montmorillonite may enhance the effectiveness of the MICP process.

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Section: Bacterial Cultivationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microbial Precipitation of Calcium Carbonate for Crack Healing and Stabilization of Sandy Soils

Kim,

Roh

2024

Applied Sciences

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“…[78, [93][94][95][96][97][98] Bioaccumulation Active uptake of heavy metals into cells involves the binding of toxic metals or chemical compounds inside the cellular structure.…”

Section: Bioprecipitationmentioning

confidence: 99%

Soil Contamination by Heavy Metals and Radionuclides and Related Bioremediation Techniques: A Review

Chernysh,

Chubur,

Ablieieva

et al. 2024

Soil Systems

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The migration of heavy metals and radionuclides is interrelated, and this study focusses on the interaction and complex influence of various toxicants. The rehabilitation of radioactively contaminated territories has a complex character and is based on scientifically supported measures to restore industrial, economic, and sociopsychological relations. We aim for the achievement of pre-emergency levels of hygienic norms of radioactive contamination of output products. This, in its sum, allows for further economic activity in these territories without restrictions on the basis of natural actions of autoremediation. Biosorption technologies based on bacterial biomass remain a promising direction for the remediation of soils contaminated with radionuclides and heavy metals that help immobilise and consolidate contaminants. A comprehensive understanding of the biosorption capacity of various preparations allows for the selection of more effective techniques for the elimination of contaminants, as well as the overcoming of differences between laboratory results and industrial use. Observation and monitoring make it possible to evaluate the migration process of heavy metals and radionuclides and identify regions with a disturbed balance of harmful substances. The promising direction of the soil application of phosphogypsum, a by-product of the chemical industry, in bioremediation processes is considered.

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“…where M is a metallic PTE, while subscript "S" denotes the solid phase and "aq" the liquid [30]. Retention of PTEs onto such liming materials has been observed for metallic elements Cd, Zn, Ni, Cu, and Pb, as well as for metalloid As [31,32]. Elements with ionic radii (given in picometers; pm) similar to that of Ca 2+ (114 pm) tend to be strongly retained (i.e., Cd 2+ (109 pm), Pb (133 pm), and Sr (132 pm)), while those with smaller ionic radii develop weaker bonds (e.g., Fe (75-69 pm), Cu (87 pm), Zn (88 pm), and Ni (83 pm)) [30,33].…”

Section: Introductionmentioning

confidence: 99%

Can Soil Improvers (Biochar, Compost, Insect Frass, Lime, and Zeolite) Achieve Phytostabilization of Potentially Toxic Elements in Heavily Contaminated Soil with the Use of Purslane (Portulaca oleracea)?

Thalassinos,

Levizou,

Antoniadis

2023

Agronomy

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In soil with extremely high contents of Cd (101.87), Pb (26,526.44), and Zn (17,652.63 mg kg−1), we aimed to test the phytostabilization capacity of purslane (Portulaca oleracea) with the use of various soil improvers, both organic (biochar, compost, insect frass) and inorganic (lime and zeolite). Thus, in a 60-day pot experiment, we amended this heavily contaminated soil with the five materials at two rates, 2% and 4%, resulting in 11 treatments (control plus five materials × two rates) replicated 10 times. We found that soil extractions of Cd with DTPA (diethylenetriaminepentaacetic acid) were not affected by any of the amendments, as there was no recorded significant reduction in soil Cd. In the case of Pb, there were even significant increases in its extractability with added biochar, and so was the case for compost at 4%. The reason may be the formation of organometallic complexes with organic substances of low molecular weight eluted by the organic amendments. Similarly, Zn extractability increased significantly compared to the control in the compost and frass treatments. As for purslane shoots, Cd decreased from 61 μg kg−1 fresh weight (FW) at control to 39 at biochar 4%, but the reduction was non-significant. As for Pb, it decreased with biochar but not significantly, while it exhibited a significant decrease in all other treatments. However, in all cases the content of Pb in purslane was well above the European regulation limit of 0.100 mg kg−1 FW (fresh weight) for vegetables and fresh herbs, while Cd fell below the regulation limit of 50 μg kg−1 FW at biochar 4%, compost 4%, and frass 2% and 4% (with control being 62.5 μg kg−1 FW). We conclude that in heavily contaminated soils, although biochar, along with compost and frass, was not entirely unsuccessful, the tested amendments did not reduce satisfactorily toxic elements to sufficiently low levels both in soil and in the test plant (here, purslane) in order to achieve phytostabilization. However, further research is necessary to identify exact mechanisms and to elucidate the role of different biochars.

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Corrigendum: Effect of Divalent Cations (Cu, Zn, Pb, Cd, and Sr) on Microbially Induced Calcium Carbonate Precipitation and Mineralogical Properties

Cited by 41 publications

References 0 publications

Microbial Precipitation of Calcium Carbonate for Crack Healing and Stabilization of Sandy Soils

Microbial Precipitation of Calcium Carbonate for Crack Healing and Stabilization of Sandy Soils

Soil Contamination by Heavy Metals and Radionuclides and Related Bioremediation Techniques: A Review

Can Soil Improvers (Biochar, Compost, Insect Frass, Lime, and Zeolite) Achieve Phytostabilization of Potentially Toxic Elements in Heavily Contaminated Soil with the Use of Purslane (Portulaca oleracea)?

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