Contaminated soils of different natural pH and industrial origin: The role of (nano) iron- and manganese-based amendments in As, Sb, Pb, and Zn leachability

Hiller, Edgar; Jurkovič, Ľubomír; Faragó, Tomáš; Vítková, Martina; Tóth, Roman; Komárek, Michael

doi:10.1016/j.envpol.2021.117268

Cited by 24 publications

(10 citation statements)

References 67 publications

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“…Additionally, recent studies confirmed the nZVI immobilisation efficiency for selected metals even under acidic conditions, i.e., 4 < pH < 6. 27,44 In this study, the ANC of the control soil was 0.04 mol kg −1 while those of BC, nZVI, and nZVI-BC were 0.17, 12.5, and 13.2 mol kg −1 , respectively (Fig. S18 †).…”

Section: Elemental Availability In the Liquid Phasementioning

confidence: 68%

“…S4H †). Gil-Díaz et al 49 and Hiller et al 44 also reported the presence of nZVI aggregates with high contents of Fe and occasional Pb and Zn contents. In contrast, in the mixed samples, the nZVI particles observed after 12 and 15 months of incubation (Fig.…”

Section: Investigations By Sem/edsmentioning

confidence: 94%

“…)), and the oxidation products are responsible for risk element immobilisation. 22,38,44 3.1.4. nZVI-BC-treated samples. In the mixed samples treated with nZVI-BC, Fe and Fe-Mn oxides with target contaminants were often detected.…”

Section: Investigations By Sem/edsmentioning

confidence: 99%

“…However, the use of a higher dosage would increase the cost of field application. The most promising, feasible and sustainable approach is the application of amendments with the aim of enhancing the natural attenuation processes 44 rather than targeting complete risk element immobilisation by the amendments only.…”

Section: Environmental Implications Of Long-term Effects Of Soil Amen...mentioning

confidence: 99%

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Revealing the long-term behaviour of nZVI and biochar in metal(loid)-contaminated soil: focus on Fe transformations

Mitzia,

Vítková,

Ratié

et al. 2023

Environ. Sci.: Nano

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Section: Elemental Availability In the Liquid Phasementioning

confidence: 68%

Section: Investigations By Sem/edsmentioning

confidence: 94%

Section: Investigations By Sem/edsmentioning

confidence: 99%

Section: Environmental Implications Of Long-term Effects Of Soil Amen...mentioning

confidence: 99%

See 2 more Smart Citations

Revealing the long-term behaviour of nZVI and biochar in metal(loid)-contaminated soil: focus on Fe transformations

Mitzia,

Vítková,

Ratié

et al. 2023

Environ. Sci.: Nano

Self Cite

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“…The chemical leaching of soils and sediments by applying strong inorganic and organic acids and persistent synthetic chelating agents (e.g., ethylenediaminetetraacetic acid or its derivatives) to solubilize contaminants has also been successfully tested for heavy metal removal [ 7 ]. Reactive solid inorganic and biological substances, as well as materials with active surfaces (e.g., zero-valent iron, ferric oxides and oxohydroxides, nanomaterials, zeolite, biological waste) have been studied as potential components of permeable treatment barriers to restrict the movement of the contaminant in the environment [ 8 , 9 , 10 , 11 ]. However, in some cases, unpredictable effects regarding the toxicity and mobility of generated species can be expected since these interactions are usually non-specific.…”

Section: Introductionmentioning

confidence: 99%

Role of Exopolysaccharides of Pseudomonas in Heavy Metal Removal and Other Remediation Strategies

et al. 2022

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Pseudomonas biofilms have been studied intensively for several decades and research outcomes have been successfully implemented in various medical and agricultural applications. Research on biofilm synthesis and composition has also overlapped with the objectives of environmental sciences, since biofilm components show exceptional physicochemical properties applicable to remediation techniques. Especially, exopolysaccharides (ExPs) have been at the center of scientific interest, indicating their potential in solving the environmental issues of heavy metal land and water contamination via sorptive interactions and flocculation. Since exposure to heavy metal via contaminated water or soil poses an imminent risk to the environment and human health, ExPs provide an interesting and viable solution to this issue, alongside other effective and green remedial techniques (e.g., phytostabilization, implementation of biosolids, and biosorption using agricultural wastes) aiming to restore contaminated sites to their natural, pollution-free state, or to ameliorate the negative impact of heavy metals on the environment. Thus, we discuss the plausible role and performance of Pseudomonas ExPs in remediation techniques, aiming to provide the relevant available and comprehensive information on ExPs’ biosynthesis and their usage in heavy metal remediation or other environmental applications, such as wastewater treatment via bioflocculation and soil remediation.

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Aerobic release of arsenic and antimony from mine soils by biostimulation of indigenous microbial activity and bioaugmentation with Cupriavidus genera of bacteria

Horváthová,

Schwarzkopfová,

Vojtková

et al. 2023

Plant Soil

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Background and Aims Bioremediation of soils contaminated with metal(loid)s is an attractive research area due to its sustainability and economic benefits. In the Slovak Republic, there are several abandoned mines containing high concentrations of arsenic (As) and antimony (Sb). This calls for new options for removing these hazardous metalloids from contaminated substrates. Studies on bioleaching of soils co-contaminated with both metalloids are very rare. This study aimed to test the effectiveness of bioleaching of soils heavily co-contaminated with As and Sb (up to 1463 mg.kg–1 and 5825 mg.kg–1, respectively) at a former stibnite mining site (Poproč, eastern Slovakia) through biostimulation and bioaugmentation. Methods Bioleaching of As and Sb from four soils was induced by biostimulation of autochthonous microflora with Sabouraud medium (SAB) and SAB+glucose, and bioaugmentation of the soil with bacterial strains Cupriavidus oxalaticus and Cupriavidus metallidurans. Soil samples were subjected to determination of physico-chemical properties, microbiological parameters, and additional mineralogical analysis. Results An inverse relationship between the total metalloid concentration and the microbial diversity was confirmed. In experiments with Cupriavidus metallidurans and Cupriavidus oxalaticus, mean bioleached As fractions were 37.6% and 41.3%, while Sb bioleaching was significantly lower, ranging between 17.0–26.2%. The mean bioleached fraction of As and Sb using SAB was 40.7% and 14.4%, respectively. The addition of glucose to SAB increased As bioleaching (50.7%) but not that of Sb. Conclusion Collectively, the results highlighted a role of microorganisms in the mobility of metalloids in soils with their prospective applications in remediation of contaminated sites.

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Contaminated soils of different natural pH and industrial origin: The role of (nano) iron- and manganese-based amendments in As, Sb, Pb, and Zn leachability

Cited by 24 publications

References 67 publications

Revealing the long-term behaviour of nZVI and biochar in metal(loid)-contaminated soil: focus on Fe transformations

Revealing the long-term behaviour of nZVI and biochar in metal(loid)-contaminated soil: focus on Fe transformations

Role of Exopolysaccharides of Pseudomonas in Heavy Metal Removal and Other Remediation Strategies

Aerobic release of arsenic and antimony from mine soils by biostimulation of indigenous microbial activity and bioaugmentation with Cupriavidus genera of bacteria

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