Designing laboratory metallic iron columns for better result comparability

Noubactep, Chicgoua; Caré, Sabine

doi:10.1016/j.jhazmat.2011.03.016

Cited by 36 publications

(30 citation statements)

References 42 publications

(60 reference statements)

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“…Accordingly, Fe 0 filtration systems must contain less than 50 % (w/w) Fe 0 to be sustainable. The presented work has also validated the suitability of using limited amount of Fe 0 (here 100 g) to investigate relevant processes within reasonable experimental duration (here 4 months) [50]. The rationale for the selection of the admixing materials (e.g.…”

Section: Discussionmentioning

confidence: 55%

“…2) is a further confirmation of assumption 4 ("all Fe 0 /sand systems should be more efficient that pure sand system") as the observed anomaly results from the particular difficulty to uniformly mix Fe 0 and sand when Fe 0 is in volumetric abundance. It should be recalled that sound theoretical works [50] have proven the needlessness of testing these volumetric proportions. Therefore, it…”

Section: Iron Breakthroughmentioning

confidence: 99%

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Impact of Fe0 amendment on methylene blue discoloration by sand columns

Miyajima¹,

Noubactep²

2013

Chemical Engineering Journal

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Section: Discussionmentioning

confidence: 55%

Section: Iron Breakthroughmentioning

confidence: 99%

Impact of Fe0 amendment on methylene blue discoloration by sand columns

Miyajima¹,

Noubactep²

2013

Chemical Engineering Journal

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“…This empirical approach is certainly costly but not necessarily effective [121][122][123]. An alternative approach is to develop the science of the system, which will serve as compass to evaluate experimental results [25,130,131].…”

Section: /H2o Systemmentioning

confidence: 99%

“…A methodology to compare the intrinsic reactivity of Fe 0 materials was introduced [133], and was recently revisited [132,134], however it is yet to receive universal acceptance. On the other hand, a universal design rationale for the design of Fe 0 filters was presented by Noubactep and Caré [130,131] and progressively revisited [25,98,[121][122][123].…”

Section: /H2o Systemmentioning

confidence: 99%

Testing Metallic Iron Filtration Systems for Decentralized Water Treatment at Pilot Scale

Tepong-Tsindé

Crane

Noubactep

et al. 2015

Water

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There are many factors to consider for the design of appropriate water treatment systems including: cost, the concentration and type of biological and/or chemical contamination, concentration limits at which contaminant(s) are required to be removed, required flow rate, level of local expertise for on-going maintenance, and social acceptance. An ideal technology should be effective at producing clean, potable water; however it must also be low-cost, low-energy (ideally energy-free) and require low-maintenance. The use of packed beds containing metallic iron (Fe 0 filters) has the potential to become a cheap widespread technology for both safe drinking water provision and wastewater treatment. for decentralized water treatment particularly in the developing world. A design for safe drinking water to a community of 100 people is also discussed as starting module. It is suggested that Fe 0 filters have the potential for significant worldwide applicability, but particularly in the developing world. The appropriate design of Fe 0 filters, however, is site-specific and dependent upon the availability of local expertise/materials.

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“…The present state of the art has been shown to be unsatisfactory [3,[5][6][7][8][9][10][11][12]. This situation is caused by several reasons.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Hydraulic Conductivity of Metallic Iron Filters: Modeling Gone Astray

Noubactep

2016

Water

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Abstract:Since its introduction about 25 years ago, metallic iron (Fe 0 ) has shown its potential as the key component of reactive filtration systems for contaminant removal in polluted waters. Technical applications of such systems can be enhanced by numerical simulation of a filter design to improve, e.g., the service time or the minimum permeability of a prospected system to warrant the required output water quality. This communication discusses the relevant input quantities into such a simulation model, illustrates the possible simplifications and identifies the lack of relevant thermodynamic and kinetic data. As a result, necessary steps are outlined that may improve the numerical simulation and, consequently, the technical design of Fe 0 filters. Following a general overview on the key reactions in a Fe 0 system, the importance of iron corrosion kinetics is illustrated. Iron corrosion kinetics, expressed as a rate constant k iron , determines both the removal rate of contaminants and the average permeability loss of the filter system. While the relevance of a reasonable estimate of k iron is thus obvious, information is scarce. As a conclusion, systematic experiments for the determination of k iron values are suggested to improve the database of this key input parameter to Fe 0 filters.

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Designing laboratory metallic iron columns for better result comparability

Cited by 36 publications

References 42 publications

Impact of Fe0 amendment on methylene blue discoloration by sand columns

Impact of Fe0 amendment on methylene blue discoloration by sand columns

Testing Metallic Iron Filtration Systems for Decentralized Water Treatment at Pilot Scale

Predicting the Hydraulic Conductivity of Metallic Iron Filters: Modeling Gone Astray

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