Identification of a soluble form of colloidal manganese(IV)

Perez‐Benito, Joaquin F.; Brillas, Enric; Pouplana, Ramón

doi:10.1021/ic00302a002

Cited by 142 publications

(79 citation statements)

References 5 publications

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“…Anaerobic growth experiments were carried out in 13-ml Hungate tubes (Bellco Glass, Inc.) filled with 10 of ml SM and sealed with black butyl rubber stoppers under an N 2 atmosphere. Filtersterilized terminal electron acceptor stocks were added at the following final concentration (terminal electron acceptor synthesis is described in reference 11, except where indicated): NO 3 Ϫ , 15 mM; NO 2 Ϫ , 3 mM; Fe(III) citrate, 50 mM; amorphous Fe(III) oxide, 100 mM; Mn(IV), 10 mM as colloidal MnO 2 (27,41), TMAO, 25 mM; SO 3 2Ϫ , 10 mM; S 2 O 3 2Ϫ , 10 mM; fumarate, 5 mM; Se(IV), 2 mM (53); and U(VI), 2 mM as uranyl carbonate (57). When required, other antibiotics were added at the following final concentrations: chloramphenicol, 25 g/ml; gentamicin, 25 g/ml; ampicillin, 50 g/ml; and streptomycin, 50 g/ml.…”

Section: Methodsmentioning

confidence: 99%

Dissimilatory Fe(III) and Mn(IV) Reduction by Shewanella putrefaciens Requires ferE , a Homolog of the pulE ( gspE ) Type II Protein Secretion Gene

2002

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Section: Methodsmentioning

confidence: 99%

Dissimilatory Fe(III) and Mn(IV) Reduction by Shewanella putrefaciens Requires ferE , a Homolog of the pulE ( gspE ) Type II Protein Secretion Gene

2002

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“…West et al, 1998West et al, , 2000 The stability of these manganese dioxide particles in solution, which is an indicator of their potential to be controlled and transported with groundwater flow, can be impacted by several reaction matrix conditions. These include reactant/particle concentrations, pH, turbulence, and the presence of anions/cations in solution (Morgan and Stumm 1964;Perez Benito et al 1989, 1990, 1991, 1992Insausti et al 1992Insausti et al , 1993Doona and Schneider 1993;Chandrakanth and Amy 1996). Specifically, higher pH, high anion content, and the presence of stabilizing colloids can serve to maintain their stability in solution, providing a foundation for this proposed research.…”

Section: Lowe Et Al 2000mentioning

confidence: 99%

Control of Manganese Dioxide Particles Resulting From In Situ Chemical Oxidation Using Permanganate

Crim¹

2008

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. AcknowledgementsThis work is supported wholly by the Department of Defense, through the Strategic Environmental Research and Development Program (SERDP). 1 Executive SummaryIn situ chemical oxidation (ISCO) using permanganate is an approach to organic contaminant remediation increasingly being applied at hazardous waste sites throughout the United States. Manganese dioxide (MnO 2 ) particles are products of the reaction of permanganate with organic contaminants and naturally-reduced subsurface materials. These particles are of interest because they have the potential to deposit in the subsurface and impact the flow regime in and around permanganate injection, including the well screen, filter pack, and the surrounding subsurface formation. The goal of this research is to understand the genesis and control of MnO 2 particles and to identify particle stabilization aids that will allow for their transport in groundwater through porous media under a variety of reaction conditions. Control of these particles can allow for improved oxidant injection, oxidant transport, and contact between the oxidant and contaminants of concern. This project's specific objectives are to determine (1) if manganese dioxide particles can be stabilized/controlled in an aqueous phase to allow for transport through a solids phase, thereby inhibiting subsurface deposition, and (2) the dependence of stabilization and control of MnO 2 particles on porous media and groundwater characteristics. Bench-scale batch experiments to initially study important chemical interactions, followed by column studies to incorporate transport phenomena, were conducted to study particle stabilization aids under varied reaction matrix conditions. Variations include particle and stabilization aid concentrations, groundwater ionic content, pH, porous media type, and redox conditions. Four stabilization aids were evaluated in the batch experiments for their ability to stabilize particles in solution over time and a range of groundwater conditions. The stabilization aid sodium hexametaphosphate (HMP) demonstrated the most promising results based on:• Spectrophotometric studies of particle behavior • Particle filtration results at va...

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“…The chemistry of manganese dioxide in terms of its application has come a long way, and its industrial uses (electrode materials, molecular sieves, biosensors and catalysts) are unlimited [1][2][3]. Perez-Benito et al [4] have described a method for the preparation of water-soluble colloidal MnO 2 during the reduction of permanganate by sodium thiosulphate. The water-soluble colloidal MnO 2 has generally been considered to be highly reactive and unstable [5].…”

Section: Introductionmentioning

confidence: 99%

“…As a result, it has been accepted that one-and two-electron oxidation of different substrates by permanganate must proceed through the formation of manganese(IV) species in aqueous acidic or neutral media [12,13]. Therefore, a search seems necessary for other related reductants, which can replace sodium thiosulphate in the preparation of colloidal MnO 2 sols by some other sulphur-containing reductant [4].…”

Section: Introductionmentioning

confidence: 99%

Formation, characterisation and redox behaviour of water-soluble colloidal manganese dioxide

Zaheer

Rafi-Ud-Din

2012

Journal of Experimental Nanoscience

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Identification of a soluble form of colloidal manganese(IV)

Cited by 142 publications

References 5 publications

Dissimilatory Fe(III) and Mn(IV) Reduction by Shewanella putrefaciens Requires ferE , a Homolog of the pulE ( gspE ) Type II Protein Secretion Gene

Dissimilatory Fe(III) and Mn(IV) Reduction by Shewanella putrefaciens Requires ferE , a Homolog of the pulE ( gspE ) Type II Protein Secretion Gene

Control of Manganese Dioxide Particles Resulting From In Situ Chemical Oxidation Using Permanganate

Formation, characterisation and redox behaviour of water-soluble colloidal manganese dioxide

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