Stabilization of lead and copper contaminated firing range soil using calcined oyster shells and fly ash

Moon, Deok Hyun; Park, Jae-Woo; Cheong, Kyung Hoon; Hyun, Seunghun; Koutsospyros, Agamemnon; Park, Jeong Hun; Ok, Yong Sik

doi:10.1007/s10653-013-9528-9

Cited by 41 publications

(23 citation statements)

References 29 publications

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“…Conversely, the addition of calcite increased the pH to a neutral value, which caused a significant decrease in the trace element concentration in the extracts that was considerably greater than that due to the 10 % dilution effect caused by the addition of the material. Similar effects were observed by other authors, for some of the metals studied here, when adding CaCO 3 -rich by-products to metal-contaminated soils (Chang et al 2013;Moon et al 2013). The increase in the soil pH led to a higher metal sorption and consequently to a decrease in the trace element leachability.…”

Section: Extraction Of Trace Elementssupporting

confidence: 89%

“…Chang et al 2013;Moon et al 2013), have also been investigated. However, the efficiency of these treatments has only been evaluated at the laboratory level, solely from their specific chemical and mineralogical composition and from the observed effect in decreasing metal leaching (Lombi et al 2002;Garrido et al 2005;Rodrí-guez-Jordá et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Viability of adding gypsum and calcite for remediation of metal-contaminated soil: laboratory and pilot plant scales

González-Núñez

Alba

Vidal

et al. 2014

Int. J. Environ. Sci. Technol.

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The effect of adding waste materials (gypsum and calcite) for the remediation of a soil contaminated by pyritic minerals was examined. Materials were characterised in terms of their acid neutralisation capacity (ANC), sorption capacity and structural components. Their effect on the contaminant leaching in soil ? material mixtures over a wide range of pH was also evaluated. Results at laboratory and pilot plant scales were compared to account for the potential variability in the material efficiency when applied at larger scale. The use of gypsum permitted its valorisation, although calcite was a more effective amendment because its addition led to a greater increase in the pH and acid neutralisation capacity, and thus in the sorption capacity in the resulting soil ? material mixture. In the same way, when the combination of gypsum ? calcite was added to the soil, it led to an increase in the pH from 2.5 to 6.9 and in the ANC from -86 to 1,513 meq/kg. As a result, the concentration of extractable heavy metals and As was reduced, and they were successfully immobilised both at laboratory and at pilot plant scales. Thus, the use of these materials induced a significant reduction in the contaminant mobility and permitted the valorisation of waste materials.

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Section: Extraction Of Trace Elementssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Viability of adding gypsum and calcite for remediation of metal-contaminated soil: laboratory and pilot plant scales

González-Núñez

Alba

Vidal

et al. 2014

Int. J. Environ. Sci. Technol.

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“…S1). Increase in soil pH leads to the formation of stable metal species, which are not easily soluble or leachable to the environment (Cao et al 2011;Lim et al 2013;Moon et al 2013b). Strong correlations of Pb and Cu mobility with soil pH and CEC indicated that precipitation and ion exchange could be the possible mechanisms of metal immobilization in shooting range soil.…”

Section: Effects Of Amendments On Soil Chemical Propertiesmentioning

confidence: 99%

The role of biochar, natural iron oxides, and nanomaterials as soil amendments for immobilizing metals in shooting range soil

Rajapaksha

Ahmad

Vithanage

et al. 2015

Environ Geochem Health

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102

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High concentration of toxic metals in military shooting range soils poses a significant environmental concern due to the potential release of metals, such as Pb, Cu, and Sb, and hence requires remediation. The current study examined the effectiveness of buffalo weed (Ambrosia trifida L.) biomass and its derived biochars at pyrolytic temperatures of 300 and 700 °C, natural iron oxides (NRE), gibbsite, and silver nanoparticles on metal immobilization together with soil quality after 1-year soil incubation. Destructive (e.g., chemical extractions) and non-destructive (e.g., molecular spectroscopy) methods were used to investigate the immobilization efficacy of each amendment on Pb, Cu, and Sb, and to explore the possible immobilization mechanisms. The highest immobilization efficacy was observed with biochar produced at 300 °C, showing the maximum decreases of bioavailability by 94 and 70% for Pb and Cu, respectively, which were attributed to the abundance of functional groups in the biochar. Biochar significantly increased the soil pH, cation exchange capacity, and P contents. Indeed, the scanning electron microscopic elemental dot mapping and X-ray absorption fine structure spectroscopic (EXAFS) studies revealed associations of Pb with P (i.e., the formation of stable chloropyromorphite [Pb5(PO4)3Cl]) in the biomass- or biochar-amended soils. However, no amendment was effective on Sb immobilization.

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“…On the present EDX spectrum, Zn was also present, and the Ettringite crystal systems were elongated in a needle-like shape, and the crystal morphology could incorporate a variety of divalent ions (i.e. Zn 2+ ), which can substitute for Ca 2+ by incorporating these ions into the lattice (Moon et al 2013). When Ca 2+ and OH À ions are released from tricalcium silicate into the surrounding environment at supersaturation levels, a calcium hydroxide (portlandite) precipitate, and in the presence of carbon dioxide, this may also precipitate as calcium carbonate (Camilleri 2008, Parirokh & Torabinejad 2010.…”

Section: Discussionmentioning

confidence: 67%

“…Zn 2+ ), which can substitute for Ca 2+ by incorporating these ions into the lattice (Moon et al . ). When Ca 2+ and OH − ions are released from tricalcium silicate into the surrounding environment at supersaturation levels, a calcium hydroxide (portlandite) precipitate, and in the presence of carbon dioxide, this may also precipitate as calcium carbonate (Camilleri , Parirokh & Torabinejad ).…”

Section: Discussionmentioning

confidence: 97%

Polyaspartic acid enhances dentine remineralization bonded with a zinc‐doped Portland‐based resin cement

et al. 2015

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Running title: Polyaspartic acid enhances dentine mineralizationKey words: Bonding, Dentine, Remineralization, Resin. ACKNOWLEDGMENTS:This work was supported by grant MINECO/FEDER MAT2014-52036-P. *CORRESPONDING AUTHORProf. Raquel Osorio. School of Dentistry, Colegio Máximo. Campus de Cartuja s/n. University of Granada E-18071 Granada, Spain. E-mail: rosorio@ugr.es 2 ABSTRACT Aim. To ascertain if biomimetic phosphoproteins analogues (polyaspartic acid -PAS-and sodium trimetaphosphate -TMP-) improve bonding efficacy and dentine remineralization ability of a novel zinc-doped Portland-based resinous sealing cement. Methodology.Bonding procedures were performed on phosphoric acid etched dentine and several groups were established regarding biomimetic analogue application: 1) No application, 2) PAStreated dentine and 3) dentine treated with a mixture of PAS and TMP. Raman spectroscopy and microtensile bond strength (MTBS) with fracture analysis by scanning electron microscopy were carried out. MTBS values were compared by ANOVA, Student-Newman-Keuls and Student t tests (P<0.05 and P<0.01 respectively). Results. MTBS values were not affected by the different bonding procedures, at 24 h testing. After 6 months, MTBS decreased in those groups in which analogues phosphoproteins' were not applied (P<0.05). When Pas was applied, MTBS was maintained after 6 months (P>0.05). The novel material bonded without primers application induced bioactive crystal (calcium carbonate and Ettringite) precipitation onto the etched dentine and augmented the degree of crystallinity at the hybrid layer.Mineral to matrix ratio was increased at the hybrid layer of the PAS-treated specimens; this primer was also able to catalyze dentine remineralization, without an increase in crystallinity.Conclusions: PAS application onto demineralized dentine produced an inhibition or delay of the mineral phase crystallization, enhancing the remineralization potential of the Portland microfillers at the resin-dentine bonded interface.

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Stabilization of lead and copper contaminated firing range soil using calcined oyster shells and fly ash

Cited by 41 publications

References 29 publications

Viability of adding gypsum and calcite for remediation of metal-contaminated soil: laboratory and pilot plant scales

Viability of adding gypsum and calcite for remediation of metal-contaminated soil: laboratory and pilot plant scales

The role of biochar, natural iron oxides, and nanomaterials as soil amendments for immobilizing metals in shooting range soil

Polyaspartic acid enhances dentine remineralization bonded with a zinc‐doped Portland‐based resin cement

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