Bioleaching and immobilizing of copper and zinc using endophytes coupled with biochar-hydroxyapatite: Bipolar remediation for heavy metals contaminated mining soils

Feng, Weiran; Xiao, Xiao; Li, Junjie; Xiao, Qicheng; Li, Ma; Gao, Qifeng; Wan, Yuke; Huang, Yutian; Liu, Ting; Luo, Xubiao; Luo, Shenglian; Zeng, Guisheng; Yu, Kai

doi:10.1016/j.chemosphere.2022.137730

Cited by 20 publications

(4 citation statements)

References 43 publications

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“…The peaks at 1654 cm −1 , 1579 cm −1 , and 1385 cm −1 in the FTIR spectrum of MOF-5 are attributed to the coordination bond of C-O-Zn (Figure 1a) [41]. Several small peaks around 746 cm −1 are due to the out-of-plane bending vibrations of C-H bonds characteristic of 1,4-substituted benzene [46].…”

Section: Resultsmentioning

confidence: 98%

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Conversion of PET Bottle Waste into a Terephthalic Acid-Based Metal-Organic Framework for Removing Plastic Nanoparticles from Water

Chinglenthoiba,

Mahadevan,

Zuo

et al. 2024

Nanomaterials

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Micro- and nanoparticles of plastic waste are considered emerging pollutants with significant environmental and health impacts at high concentrations or prolonged exposure time. Here we report the synthesis and characterization of a known metal-organic framework (MOF) using terephthalic acid (TPA) recovered from the hydrolysis of polyethylene terephthalate (PET) bottle waste. This approach adds value to the existing large amounts of bottle waste in the environment. Fully characterized zinc-TPA MOF (MOF-5) was used for the extraction and removal of engineered polyvinyl chloride (PVC) and polymethylmethacrylate (PMMA) nanoparticles from water with a high efficiency of 97% and 95%, respectively. Kinetic and isotherm models for the adsorption of polymer nanoparticles (PNPs) on the MOF surface were investigated to understand the mechanism. The Qmax for PVC and PMMA NPs were recorded as 56.65 mg/g and 33.32 mg/g, respectively. MOF-5 was characterized before and after adsorption of PNPs on the surface of MOF-5 using a range of techniques. After adsorption, the MOF-5 was successfully regenerated and reused for the adsorption and removal of PNPs, showing consistent results for five adsorption cycles with a removal rate of 83–85%. MOF-5 was characterized before and after adsorption of PNPs on the surface using a range of techniques. The MOF-5 with PNPs on the surface was successfully regenerated and reused for the adsorption and removal of polymer nanoparticles, showing consistent results for five extraction cycles. As a proof of concept, MOF-5 was also used to remove plastic particles from commercially available body scrub gel solutions. Such methods and materials are needed to mitigate the health hazards caused by emerging micro- and nanoplastic pollutants in the environment.

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Section: Resultsmentioning

confidence: 98%

“…The structure of the extracted TPA was also characterised using XRD studies and the peak positions in the XRD pattern were compared with the reported values (Figure 1b) [46,47]. The peaks observed on the XRD pattern of TPA powder were indexed as 2θ = 17.15 • (110), 24.96 • (222), 27.67 • (220), 31.57 • (121) and 39.44 • (212).…”

Section: Resultsmentioning

confidence: 99%

Conversion of PET Bottle Waste into a Terephthalic Acid-Based Metal-Organic Framework for Removing Plastic Nanoparticles from Water

Chinglenthoiba,

Mahadevan,

Zuo

et al. 2024

Nanomaterials

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“…The descriptive statistics was performed to evaluate the differences between corresponding groups. Data were subjected to one-way ANOVA statistical method with the significance level at P < 0.01 [ 35 , 36 ].…”

Section: Methodsmentioning

confidence: 99%

Extracting metal ions from basic oxygen steelmaking dust by using bio-hydrometallurgy

Tezyapar Kara,

Huntington,

Simmons

et al. 2024

Heliyon

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“…Interactions of potentially toxic metals with soils are a complex and dynamic process that is still not fully understood. Feng et al [ 18 ] and Li et al [ 2 ] believe that significant influences on these processes are interactions of metals with microorganisms, organic matter, and clay minerals. The main components of clay minerals are silicate minerals and oxides, which affect the binding and migration of metals in soils [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Mobility of Zn and Cu in Bentonites: Implications for Environmental Remediation

Nartowska,

Podlasek,

Vaverková

et al. 2024

Materials

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The aim of this study was to evaluate the mobility of copper (Cu) and zinc (Zn) and their impact on the properties of bentonites and unfrozen water content. Limited research in this area necessitates further analysis to prevent the negative effects of metal interactions on bentonite effectiveness. Tests involved American (SWy-3, Stx-1b) and Slovak (BSvk) bentonite samples with Zn or Cu ion exchange. Sequential extraction was performed using the Community Bureau of Reference (BCR) method. Elemental content was analyzed via inductively coupled plasma optical emission spectrometry (ICP-OES). Unfrozen water content was measured using nuclear magnetic resonance (1H-NMR) and differential scanning calorimetry (DSC). Results showed a significant influence of the main cation (Zn or Cu) on ion mobility, with toxic metal concentrations increasing mobility and decreasing residual fractions. Mobile Zn fractions increased with larger particle diameters, lower clay content, and shorter interplanar spacing, while the opposite was observed for Cu. Zn likely accumulated in larger clay pores, while Cu was immobilized in the bentonite complex. The stability of Zn or Cu ions increased with higher clay content or specific surface area. Residual Zn or Cu fractions were highest in uncontaminated bentonites with higher unfrozen water content, suggesting the potential formation of concentrated solutions in sub-zero temperatures, posing a threat to the clay–water environment, especially in cold regions.

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Bioleaching and immobilizing of copper and zinc using endophytes coupled with biochar-hydroxyapatite: Bipolar remediation for heavy metals contaminated mining soils

Cited by 20 publications

References 43 publications

Conversion of PET Bottle Waste into a Terephthalic Acid-Based Metal-Organic Framework for Removing Plastic Nanoparticles from Water

Conversion of PET Bottle Waste into a Terephthalic Acid-Based Metal-Organic Framework for Removing Plastic Nanoparticles from Water

Extracting metal ions from basic oxygen steelmaking dust by using bio-hydrometallurgy

Mobility of Zn and Cu in Bentonites: Implications for Environmental Remediation

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