Characterizing the reactivity of metallic iron upon methylene blue discoloration in Fe0/MnO2/H2O systems

Noubactep, Chicgoua

doi:10.1016/j.jhazmat.2009.02.121

Cited by 31 publications

(16 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 and vary from 13 μg h -1 for ZVI8 to 37 μg h -1 for ZVI10. The least reactive material (ZVI8 from Würth) was used as negative reference like in previous studies [32][33][34]. The most reactive material were ZVI9 (Ferblast) and ZVI10 (Peerless).…”

Section: Edta Batch Test 421 All Tested Materialsmentioning

confidence: 99%

Testing the suitability of metallic iron for environmental remediation: Discoloration of methylene blue in column studies

Miyajima²,

Noubactep³

et al. 2013

Chemical Engineering Journal

Self Cite

View full text Add to dashboard Cite

A new method to correlate intrinsic reactivity and treatability efficiency of metallic iron ( Metallic iron (Fe 0 ) is a reactive material currently used for environmental remediation and safe drinking water provision [1][2][3][4][5][6][7]. Available Fe 0 materials are obtained from various sources [8][9][10][11][12] and are supposed to satisfy design expectations [7,[13][14][15][16][17]. However, there is no standard method to access the suitability of Fe 0 materials for individual applications. As a rule, used materials are characterized: (i) by selected physical and chemical parameters (e.g.elemental composition, particle size, surface area) and (ii) for their ability to remove the specific species of interest (efficiency in treatability studies) [11,18,19]. However, each reactive material should be primarily characterized by its intrinsic reactivity.The 'intrinsic reactivity' is a material-dependent but system-independent qualitative trend.The 'removal efficiency' or 'treatability efficiency' is a system-dependent quantifiable

show abstract

Section: Edta Batch Test 421 All Tested Materialsmentioning

confidence: 99%

Testing the suitability of metallic iron for environmental remediation: Discoloration of methylene blue in column studies

Miyajima²,

Noubactep³

et al. 2013

Chemical Engineering Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…The results of experiments using such different materials have been compared to each other with little care on the intrinsic material reactivity (see next section). To date there is no standard parameter to evaluate the intrinsic reactivity of Fe 0 materials [17]. However, it is well known that, the metal type and method of manufacture are as important as the environment (solution corrosiveness) for corrosion processes [18].…”

Section: Introductionmentioning

confidence: 99%

Characterizing the reactivity of metallic iron in Fe0/EDTA/H2O systems with column experiments

Noubactep¹

2010

Chemical Engineering Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…A tentative order of increasing reactivity based on these values is: ZVI3 < ZVI1 < ZVI2 < ZVI4. Note that the order of reactivity after the EDTA-test (Noubactep et al, 2005; and the MB-test (Noubactep, 2009) were univocally: ZVI2 < ZVI1 = ZVI3 = ZVI4. Accordingly, air-homogenised batch experiments are not appropriate for the differentiation of the reactivity of ZVI1, ZVI3 and ZVI4.…”

Section: Resultsmentioning

confidence: 99%

“…surface state). However, it has been traceably demonstrated that none of these structural and physical characteristics is really determinant for the chemical reactivity of Fe 0 (Reardon, 1995;Landis et al, 2001: Noubactep et al, 2005Reardon, 2005;Noubactep et al, 2009). For instance, Landis et al (2001) reported that Fe 0 materials of comparable particle size (comparable surface area) exhibited reactivity differences greater than 3-fold for cDCE and VC degradation rates in column studies.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, Fe 0 dissolution is not necessarily coupled to contaminant removal. These limitations have led to the development of a second experimental tool in which Fe 0 is characterised by the extent of the discoloration of methylene blue (MB) in the presence of manganese dioxide (MnO 2 ) (MB-test) (Noubactep, 2009 (Noubactep et al, 2008a;2008b). It was shown that elevated amounts of As could be leached from an ore material for a long time (up to 99 days).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterising the reactivity of metallic iron in Fe<sup>0</sup>/As-rock/H<sub>2</sub>O systems by long-term column experiments

Noubactep¹

2012

WSA

View full text Add to dashboard Cite

The intrinsic reactivity of 4 metallic iron materials (Fe 0 ) was investigated in batch and column experiments. The Fe 0 reactivity was characterised by the extent of aqueous fixation of in-situ leached arsenic (As). Air-homogenised batch experiments were conducted for 1 month with 10.0 g/ℓ of an As-bearing rock (ore material) and 0.0 or 5.0 g/ℓ of Fe 0 . Column experiments were performed for 2 and 3 months. Each dynamic experiment was made up of 2 glass columns in series. The first column contained 2.5 or 5.0 g of the ore material and the second column 0.0 or 5.0 g of a Fe 0 material. Results showed no significant reactivity difference in batch studies for all 4 materials; ZVI2 was by far the most reactive material in column experiments. This observation was attributed to the relative kinetics of production of aqueous As and Fe species under the experimental conditions and their impact on the formation of a protective film on Fe 0 . Accordingly, no protective film could be built at the surface of the least reactive materials. The results corroborated the urgent need for unified experimental procedures to characterise Fe 0 materials.

show abstract

Characterizing the reactivity of metallic iron upon methylene blue discoloration in Fe0/MnO2/H2O systems

Abstract: A simple method is proposed for testing the reactivity of elemental iron materials (Fe 0 materials) using methylene blue (MB) as reagent.

Cited by 31 publications

References 23 publications

Testing the suitability of metallic iron for environmental remediation: Discoloration of methylene blue in column studies

Testing the suitability of metallic iron for environmental remediation: Discoloration of methylene blue in column studies

Characterizing the reactivity of metallic iron in Fe0/EDTA/H2O systems with column experiments

Characterising the reactivity of metallic iron in Fe<sup>0</sup>/As-rock/H<sub>2</sub>O systems by long-term column experiments

Contact Info

Product

Resources

About