Removing molybdate from water using a hybridized zero-valent iron/magnetite/Fe(II) treatment system

Huang, Yong; Tang, Cilai; Zeng, Hui

doi:10.1016/j.cej.2012.06.047

Cited by 74 publications

(35 citation statements)

References 19 publications

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“…The authors concluded that "the mixed reactive filters" are not applicable for treatment of the "tested groundwater with its indigenous microorganisms". This conclusion is erroneous for at least A second example showing how the results of Westerhoff and James [124] were not properly considered is presented by Huang et al [88][89][90] …”

Section: Disregarding Lessons From the Pioneering Workmentioning

confidence: 97%

“…No consideration of these key issues has led to controversial reports which render the assessment of progress in designing Fe [8,9,54,58,[88][89][90][124][125][126]. In particular, the usefulness of mixing Fe 0 and inert (anthracite, pumice, sand) or reactive but non-expansive (Fe3O4, MnO2, TiO2) materials is still controversially discussed [125,127,128].…”

Section: /H2o Systemmentioning

confidence: 99%

“…In particular, the usefulness of mixing Fe 0 and inert (anthracite, pumice, sand) or reactive but non-expansive (Fe3O4, MnO2, TiO2) materials is still controversially discussed [125,127,128]. Furthermore, an empirical approach has been used to screen selected operational factors like grain sizes and grain size distributions [126], grain packing [129] or the mixture of Fe3O4 and external Fe II solutions [88][89][90]. This empirical approach is certainly costly but not necessarily effective [121][122][123].…”

Section: /H2o Systemmentioning

confidence: 99%

“…This impression is supported by articles which reported on quantitative removal of species (e.g., 1,2-dichloroethane, dichloromethane, methylene blue, triazoles) which were proven to be not reducible by Fe 0 [83][84][85]. The performance of Fe 0 materials for water treatment has been adapted in recent years via multiple different methodologies, for a wide range of applications, including: (i) decreasing the particle size to nano-scale in order to enhance the reactivity of the material as a function of mass [86]; (ii) embedding noble bimetallic particles into the Fe 0 structure in order to improve the galvanic properties of the material [87]; (iii) embedding Fe 0 into appropriate porous support materials [14,48]; and (iv) embedding Fe 0 with complimentary adsorbent materials [88][89][90]. In addition, other metallic elements (namely Al has typically been demonstrated as superior due to its cost-effectiveness, bio-compatibility and long-term reactivity under natural conditions [96,97].…”

Section: /H2o System For Contaminant Mitigationmentioning

confidence: 99%

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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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Section: Disregarding Lessons From the Pioneering Workmentioning

confidence: 97%

Section: /H2o Systemmentioning

confidence: 99%

Section: /H2o Systemmentioning

confidence: 99%

Section: /H2o System For Contaminant Mitigationmentioning

confidence: 99%

See 2 more Smart Citations

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

Tepong-Tsindé

Crane

Noubactep

et al. 2015

Water

View full text Add to dashboard Cite

show abstract

“…This simplification ignores the evidence that HFO and other iron precipitates are formed in situ in the presence of As. Thus, As III coprecipitation is likely to be quantitative (Crawford et al 1993a(Crawford et al , 1993bNoubactep 2007Noubactep , 2008 (Huang et al 2012(Huang et al , 2013a (Huang et al 2012(Huang et al , 2013a, this observation needs a scientific explanation.…”

Section: Designing Fe 0 Filters From Laboratory Datamentioning

confidence: 99%