Towards the scale up of a pressurized-jet microfluidic flow-through reactor for cost-effective electro-generation of H2O2

Pérez, J.F.; Llanos, Javier; Sáez, Cristina; López, C.; Cañizares, Pablo; Rodrigo, Manuel A.

doi:10.1016/j.jclepro.2018.11.225

Cited by 60 publications

(48 citation statements)

References 50 publications

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“…Increasing the flow rate to 300-500 L/h, a noticeable change in morphology was observed, resulting in an increase in crystal size and smooth grains. This can be ascribed to the enhanced mass transport at higher electrolyte flow rate [49]. .…”

Section: Effect Of Flow Rate Of the Electrolytementioning

confidence: 99%

Selective Recovery of Tellurium from the Tellurium-Bearing Sodium Carbonate Slag by Sodium Sulfide Leaching Followed by Cyclone Electrowinning

Dong

et al. 2020

Metals

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The rigorous environmental requirements promote the development of new processes with short and clean technical routes for recycling tellurium from tellurium-bearing sodium carbonate slag. In this paper, a novel process for selective recovery of tellurium from the sodium carbonate slag by sodium sulfide leaching, followed by cyclone electrowinning, was proposed. 88% of tellurium was selectively extracted in 40 g/L Na2S solution at 50 °C for 60 min with a liquid to solid ratio of 8:1 mL/g, while antimony, lead and bismuth were enriched in the leaching residue. Tellurium in the leach liquor was efficiently electrodeposited by cyclone electrowinning without purification. The effects of current density, temperature and flow rate of the electrolyte on current efficiency, tellurium recovery, cell voltage, energy consumption, surface morphology, and crystallographic orientations were systematically investigated. 91.81% of current efficiency and 95.47% of tellurium recovery were achieved at current density of 80 A/m2, electrolyte temperature of 45 °C and electrolyte flow rate of 400 L/h. The energy consumption was as low as 1.81 kWh/kg. A total of 99.38% purity of compact tellurium deposits were obtained. Therefore, the proposed process may serve as a promising alternative for recovering tellurium from tellurium-bearing sodium carbonate slag.

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Section: Effect Of Flow Rate Of the Electrolytementioning

confidence: 99%

Selective Recovery of Tellurium from the Tellurium-Bearing Sodium Carbonate Slag by Sodium Sulfide Leaching Followed by Cyclone Electrowinning

Dong

et al. 2020

Metals

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“…For low to moderate concentrated effluents with a low amount of particles, the mass transfer should be intensified by implementing flow-through mode with porous electrode materials and/or thin-film reactors J o u r n a l P r e -p r o o f (e.g. micro-reactor [75][76][77][78], reactive electrochemical membrane (REM) [21], reactive electromixing reactor [36]). For concentrated effluents, other configurations can be proposed such as flow-by cells, reactive electro-mixing reactors [36] and flow electrochemical reactors [79].…”

Section: Engineering Approach and Scale Upmentioning

confidence: 99%

Electrochemical technologies coupled with biological treatments

Mousset

Trellu

Olvera‐Vargas

et al. 2021

Current Opinion in Electrochemistry

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“…Thermal and annealing methods have produced Cu2O/TiO2 on Cu foam [33], Fe-doped Ni(OH)2 on Ni foam by dip-coating [34], carbon on Al foam [35]. Fig.…”

Section: Surface Modification Strategiesmentioning

confidence: 99%

“…4 shows the two-cell stack pilot electrochemical flow cell employing Ni foam electrodes. Several examples of porous electrodes in flow cells are found in the field of electrochemical water treatment, e.g., electro-generation of H2O2 and electro-Fenton at coated Al foam [35], as well as RuO2/IrO2 Ti mesh and thin-film BDD on a Nb mesh electrodes [69]. Other controlled reaction environments are the rotating cylinder electrode and packed bed electrochemical flow reactors.…”

Section: Recent and Novel Applicationsmentioning

confidence: 99%

Three-dimensional porous metal electrodes: Fabrication, characterisation and use

Arenas

León

Walsh

2019

Current Opinion in Electrochemistry

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Diverse 3D porous metal electrodes, including meshes, foams and felts, are used in electrochemical flow reactors for a wide range of industrial applications, such as energy storage, electrosynthesis and degradation of pollutants. Recent work centres on the hierarchical decoration and coating of 3D electrodes with catalysts, although the study of their performance in a controlled and reproducible flow and mass transfer environment ought to receive more attention. New advances have considered metal nanofelts and nanomesh porous electrodes which show superior productivity. Opportunities are found in additive manufacturing, advanced structural characterization by e.g., X-ray computed tomography, and in 3D modelling of the hydrodynamic characteristics, current distribution and mass transfer coefficient.

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Towards the scale up of a pressurized-jet microfluidic flow-through reactor for cost-effective electro-generation of H2O2

Cited by 60 publications

References 50 publications

Selective Recovery of Tellurium from the Tellurium-Bearing Sodium Carbonate Slag by Sodium Sulfide Leaching Followed by Cyclone Electrowinning

Selective Recovery of Tellurium from the Tellurium-Bearing Sodium Carbonate Slag by Sodium Sulfide Leaching Followed by Cyclone Electrowinning

Electrochemical technologies coupled with biological treatments

Three-dimensional porous metal electrodes: Fabrication, characterisation and use

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