A comparison of the electrochemical recovery of palladium using a parallel flat plate flow-by reactor and a rotating cylinder electrode reactor

Terrazas-Rodríguez, J. E.; Gutiérrez-Granados, Silvia; Alatorre-Ordaz, M. A.; León, Carlos Ponce de; Walsh, Frank C.

doi:10.1016/j.electacta.2011.08.021

Cited by 33 publications

(22 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The normalized copper concentration should vary according to the first‐order kinetic model given in Equation . The first‐order reaction rate constant k can be determined by plotting the normalized copper concentration versus time of electrolysis, and for a flat plate electrode can be expressed by Equation

\ln \frac{C_{t}}{C_{0}} = - italickt

k = k^{'} ((), \frac{A_{e}}{V_{r}})

…”

Section: Resultsmentioning

confidence: 99%

Electrochemical recovery of copper complexed by DTPA and C₁₂‐DTPA from aqueous solution using a membrane cell

Eivazihollagh

Bäckström

Norgren

et al. 2018

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND The electrochemical recovery of copper from diethylenetriaminepentaacetic acid (DTPA) and C12–DTPA (a surface‐active derivative of DTPA) complex solutions was investigated in a membrane flow cell. Electrolysis time, solution flow rate, applied current density, and solution pH were evaluated. RESULTS The chelating surfactant C12‐DTPA can promote the kinetics of copper electrodeposition more than DTPA depending on the experimental conditions. At a current density of 30 A m–2, a solution flow rate of 0.6 L min–1, and pH 10 after 180 min treatment, the copper recovery and current efficiency were 50% and 43.3%, respectively, in the Cu(II)‐DTPA system and about 65% and 53.6%, respectively, in the Cu(II)‐C12‐DTPA system. The differences in the amount of recovery could be explained in terms of differences in the diffusion of copper complexes with DTPA and C12‐DTPA to the cathode, as well as their solution behavior and pH‐dependent conditional stability constants (log10 K'CuDTPA3‐). CONCLUSION Electrochemical methods could be effectively combined with foam flotation for the chelating surfactant C12‐DTPA, to recover copper and C12‐DTPA. This makes the overall treatment more sustainable, and can be helpful in complying with the increasingly stringent environmental regulations. © 2017 Society of Chemical Industry

show abstract

\ln \frac{C_{t}}{C_{0}} = - italickt

k = k^{'} ((), \frac{A_{e}}{V_{r}})

…”

Section: Resultsmentioning

confidence: 99%

Electrochemical recovery of copper complexed by DTPA and C₁₂‐DTPA from aqueous solution using a membrane cell

Eivazihollagh

Bäckström

Norgren

et al. 2018

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…The rotating cylinder electrochemical reactor is one of the most important reactors which has been used widely in practice for processing dilute solutions such as those encountered in waste water treatment and electroorganic synthesis where diffusion controlled reactions are involved [1][2][3][4][5][6][7][8][9][10][11]. The widespread use of the reactor is attributed to merits such as the high mass transfer coefficient, the uniform current and potential distribution, the low floor space occupied by the reactor and the possibility of continuous operation at low feed rate in order to increase the residence time, the high rate of mass transfer and the high residence time would increase the degree of conversion per pass.…”

Section: Introductionmentioning

confidence: 99%

Mass transfer at a rotating tubular packed bed of woven screens in relation to electrochemical and catalytic reactor design

Abdel‐Aziz

Nirdosh

Sedahmed

2015

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

“…The commercial cells in studies about wastewater treatment have been designed for other applications (typically electrosynthesis); therefore, special considerations of wastewater treatment are sometimes disregarded. Three relevant cells are typically discussed in studies about the electrolysis of wastewater: the ElectroCell (ElectroCell A/S, Denmark), the FC01‐LC (formerly ICI Chemicals and Polymers Ltd.; currently INEOS Chlor‐chemicals, UK) and the DIACELL (formerly ADAMANT TECH; currently WaterDiam, Switzerland) . The first two cells were designed for the chlor‐alkali process and have to be adapted (or at least applied in different conditions) for application in studies about wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Towards the scale‐up of electrolysis with diamond anodes: effect of stacking on the electrochemical oxidation of 2,4 D

Souza

Sáez

Lanza

et al. 2015

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND In recent years, the application of electrochemical wastewater treatment processes has proven to be very efficient in the removal of recalcitrant organic compounds. However, the scale‐up of the boron‐doped diamond (BDD) anode system for industrial applications has not been sufficiently evaluated. This study assesses the effect of increasing the number of compartments in the same electrochemical module (DiaCell® 1001) on the treatment of synthetic wastewater with pesticide 2,4‐D and chlorides. This commercial module can be considered to be a stack of cells, in which the number of single cells varies from 2–10 and the anode areas range from 140–700 cm−2. RESULTS The results of the study demonstrate that an increase in the number of cells and a decrease in the resulting current density at the same current intensity caused an increase in the removal and mineralisation rates. Complete mineralisation was attained in all configurations tested. The production of hazardous species, such as chlorates and perchlorates, are also affected by the number of stacked cells, which causes them to be positioned lower in the stack due to the large number of cells. CONCLUSIONS No distinct differences in electrochemical efficiency are observed among the different configurations tested. However, a distinct improvement in the energy efficiency (g kWh−1) with an increase in the number of stacked cells is observed due to the reduced stack potential caused by applying the same current intensity to the stack with the higher number of cells. © 2015 Society of Chemical Industry

show abstract

A comparison of the electrochemical recovery of palladium using a parallel flat plate flow-by reactor and a rotating cylinder electrode reactor

Cited by 33 publications

References 31 publications

Electrochemical recovery of copper complexed by DTPA and C₁₂‐DTPA from aqueous solution using a membrane cell

Electrochemical recovery of copper complexed by DTPA and C₁₂‐DTPA from aqueous solution using a membrane cell

Mass transfer at a rotating tubular packed bed of woven screens in relation to electrochemical and catalytic reactor design

Towards the scale‐up of electrolysis with diamond anodes: effect of stacking on the electrochemical oxidation of 2,4 D

Contact Info

Product

Resources

About

A comparison of the electrochemical recovery of palladium using a parallel flat plate flow-by reactor and a rotating cylinder electrode reactor

Cited by 33 publications

References 31 publications

Electrochemical recovery of copper complexed by DTPA and C12‐DTPA from aqueous solution using a membrane cell

Electrochemical recovery of copper complexed by DTPA and C12‐DTPA from aqueous solution using a membrane cell

Mass transfer at a rotating tubular packed bed of woven screens in relation to electrochemical and catalytic reactor design

Towards the scale‐up of electrolysis with diamond anodes: effect of stacking on the electrochemical oxidation of 2,4 D

Contact Info

Product

Resources

About

Electrochemical recovery of copper complexed by DTPA and C₁₂‐DTPA from aqueous solution using a membrane cell

Electrochemical recovery of copper complexed by DTPA and C₁₂‐DTPA from aqueous solution using a membrane cell