Coplanar interdigitated band electrodes for electrosynthesis. Part 6. hypochlorite electrogeneration from sea water electrolysis

Ferrigno, Rosaria; Comninellis, Christos; Reid, V. W.; Modes, C; Scannell, R.A.

doi:10.1016/s0013-4686(99)00005-5

Cited by 11 publications

(8 citation statements)

References 11 publications

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“…Active chlorine is traditionally introduced to water in the form of hypochlorite or chlorine gas. More recently, electrochemical generation of hypochlorite has been advocated [7].…”

Section: Introductionmentioning

confidence: 99%

A novel perforated electrode flow through cell design for chlorine generation

et al. 2010

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Chlorination remains a predominant method for disinfecting drinking water. Electrogeneration of chlorine has the potential to become the favoured method of chlorine production if costs can be lowered and chlorine generation efficiencies can be improved. A novel perforated electrode flow through (PEFT) cell design has been developed to address these problems. The electrodes were made from low-cost graphite sheets and stainless steel mesh and separated by a non-conducting fabric membrane. This electrode configuration allows reduction of electrode separation to 0.1 mm or less, minimizing cell resistance and increasing electrical efficiency. The new PEFT configuration generates hypochlorite from a 0.5 mol L -1 brine at a current efficiency of better than 60%. As an inline in situ device, it produces chlorine concentrations known to be sufficient to disinfect water, from chloride concentrations as low as 0.004 mol L -1 (available in most natural waters) by a single pass of the water through the cell operating at 11 V. The possibility of a portable device operated by a 12-V battery is indicated.

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“…Active chlorine is traditionally introduced to water in the form of hypochlorite or chlorine gas. More recently, electrochemical generation of hypochlorite has been advocated [7].…”

Section: Introductionmentioning

confidence: 99%

A novel perforated electrode flow through cell design for chlorine generation

et al. 2010

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“…Later, modified DSA type electrodes incorporating iridium oxides were investigated for the oxygen evolution reaction 2,3 and also with other metals [4][5][6] , in order to modulate their properties and to increase their service life. More recently, DSA type electrodes have been used for the oxidation of some organic molecules that constitute water pollutants, notable phenols 7 , as well as for the electrolysis of sea water 8,9 .…”

Section: Introductionmentioning

confidence: 99%

The oxidation of formaldehyde on high overvoltage DSA type electrodes

Motheo¹,

González²,

Tremiliosi‐Filho³

et al. 2000

J. Braz. Chem. Soc.

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Neste trabalho a oxidação eletroquímica do formaldeído é estudada sobre eletrodos dimensionalmente estáveis preparados por decomposição térmica de percursores (correspondentes cloretos The electrolyses were performed galvanostatically in a filter press cell with 0.5 mol L -1 H 2 SO 4 solutions with initial formaldehyde concentration equal to 100 mmol L -1 . The concentration of formaldehyde decreases fast with the electrolysis time, with the ternary anode (Ir + Ru + Ti) presenting the best performance for this step. The anode containing only Ir, despite presenting the higher superficial charge, is the one with the lowest electrocatalytic activity. For the formic acid oxidation step, the presence of iridium in the anode composition does not promote the process, the anode containing only ruthenium being the most effective for this step.

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“…The decrease in the inter-electrode gap may lead to the overlapping of the anodic and cathodic diffusion layers [7][8][9][10][11][17][18][19]. This is referred to as coupling of the electrode processes.…”

Section: Coupling Of the Electrode Processesmentioning

confidence: 99%

Microstructured Reactors for Electrochemical Synthesis

Rode¹,

Lapicque²

2009

Micro Process Engineering

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Electrochemistry is an extremely diversified field describing any kind of system where a chemical reaction takes place at an electrified interface and is coupled with an electron transfer between an electronic and an ionic conductor. Well-known application fields are electroanalytical devices, electrowinning of metals, electroplating, energy storage in batteries, energy conversion in fuel cells and the synthesis of a great variety of inorganic and organic compounds. The electrochemical reactors used in these different application fields are various and it is outwith the scope of this chapter to discuss the impact of microstructuring on all of them. Instead, this chapter focuses on a particular application field: electrochemical synthesis. Moreover, the reactor layout is analyzed from the point of view of process engineering whereas electrocatalytic aspects, even though extremely important in electrochemical engineering, are not treated.In the first section, some fundamentals of electrochemical processes are defined. Common industrially relevant process flow schemes and equipment are described in the second section. The third section discusses the interest of microstructured reactors in electrochemical synthesis and gives an overview of the recent literature in this area. Fundamentals of Electrochemical ProcessesFundamentals of electrochemical processes can be found in several textbooks [1][2][3][4][5]. The electrochemical reactor is an electrolytic cell, shown schematically in Figure 17.1, powered by a current source. The cell contains positively charged anodes and negatively charged cathodes in addition to an electrolyte solution containing ions which permit to carry the electric current through the solution. The reactant and the products are usually at least partially dissolved in the electrolyte.Ã A List of Symbols can be found at the end of this chapter.

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Coplanar interdigitated band electrodes for electrosynthesis. Part 6. hypochlorite electrogeneration from sea water electrolysis

Cited by 11 publications

References 11 publications

A novel perforated electrode flow through cell design for chlorine generation

A novel perforated electrode flow through cell design for chlorine generation

The oxidation of formaldehyde on high overvoltage DSA type electrodes

Microstructured Reactors for Electrochemical Synthesis

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