Simultaneous Recovery of Metals and Destruction of Organic Species:  Cobalt and Phthalic Acid

Grimes, Susan M.; Donaldson, J. D.; Chaudhary, Abdul J.; Hassan, Mukhtarul

doi:10.1021/es990784k

Cited by 18 publications

(11 citation statements)

References 17 publications

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“…Combining the SS and ACF cathodes, the recovery efficiency of Cu(I) reached 95.0 ± 3.0%. The activated carbon concentrator cathode increased the concentration of Cu(I) near the electrode surface, which led to the increase in metal recovery efficiency [23]. In the control experiment, ACF without any applied charge had poor adsorption of complexed Cu(I).…”

Section: Enhanced Destruction Of Cu(cn) 3 2− and Recovery Of Cu(i)mentioning

confidence: 98%

Enhancing destruction of copper (I) cyanide and subsequent recovery of Cu(I) by a novel electrochemical system combining activated carbon fiber and stainless steel cathodes

Chen

Sun

et al. 2017

Chemical Engineering Journal

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A B S T R A C TMetal recovery is an attractive strategy for treatment of heavy metal wastewater. Heavy metal cyanide complexes are common pollutants in electroplating or mine industry wastewater, which usually hinder metal recovery due to the high stability of these complexes. A novel electrochemical system with activated carbon fiber and stainless steel combined cathodes was constructed for copper (I) cyanide (Cu(CN) 3 2− ) destruction and Cu(I) recovery. The destruction of cyanide was significantly improved by combining the stainless steel and activated carbon fiber cathodes due to the enhancement of electro-generated H 2 O 2 , which was promoted due to catalysis by copper deposited at the cathodes. Both the destruction of Cu(CN) 3 2− and recovery of Cu(I) at 75 min attained 95.0 ± 3.0%, which were higher than values obtained using stainless steel or activated carbon fiber as individual cathodes. The rate of Cu(CN) 3 2 destruction and Cu(I) recovery increased with increasing pH. The optimal current density was 50 A/m 2 , and higher current density caused more side reactions. Cu(CN) 3 2− was successively transformed into Cu(CN) 2 − , CNO − and Cu(I), and the liberated Cu(I) was recovered as Cu(0) on the stainless steel and activated carbon fiber electrodes.

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Section: Enhanced Destruction Of Cu(cn) 3 2− and Recovery Of Cu(i)mentioning

confidence: 98%

Enhancing destruction of copper (I) cyanide and subsequent recovery of Cu(I) by a novel electrochemical system combining activated carbon fiber and stainless steel cathodes

Chen

Sun

et al. 2017

Chemical Engineering Journal

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“…The cell was developed from one used in earlier work to achieve simultaneous recovery of metals and destruction of organic components from dilute solution [43][44][45][46]. It consists of a Pyrex vessel (with an outer diameter 16 cm and height 30 cm) containing…”

Section: The Cylindrical Mesh Electrode Electrolysis Cellmentioning

confidence: 99%

“…For example, indium deposition is about 10 5 times faster from solutions in which the basic ion [In(H2O)5OH] 2+ predominates than it is from acidic solutions in perchloric acid where the indium is present as In(H2O) [38]. In earlier work [39,40] the authors have described the development of electrochemical cells designed to monitor trace levels of metals, to recover metals from dilute solution [41], to separate cobalt and nickel [42], and to simultaneously remove metals and degrade organic contaminants in effluent streams [43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Recovery of critical metals from dilute leach solutions – Separation of indium from tin and lead

Grimes

Yasri

Chaudhary

2017

Inorganica Chimica Acta

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The strategic metal indium is recovered from solutions containing tin and lead that are typical of those obtained from leach solutions of metal component fractions of electronic waste including the leach solutions from indium tin oxide thin film conductive layers that contain only indium and tin. Almost total recovery of the metals can be achieved from nitric, perchloric and acetic acid leach solutions using a novel cylindrical mesh electrode electrolysis cell under appropriate conditions. The optimum separation of indium from tin and lead is achieved by a novel three-

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“…Utilization of the photogenerated electrons to react with the oxygen for H 2 O 2 production at the carbon cathode was reported in a PEC cell, in which PEC oxidation of chlortetracycline using TiO 2 /Ti anode occur simultaneously [9]. With respect to the electrodeposition of metal ions, a combined PEC system using an activated carbon concentrator cathode is described by Grimes et al that achieves a simultaneous destruction of phthalic acid and recovery of cobalt ions [15]. In their work, TiO 2 photocatalyst was used as powder, which was needed to be separated.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic oxidation of Cu-EDTA complex and electrodeposition recovery of Cu in a continuous tubular photoelectrochemical reactor

Zhao

Guo

2014

Chemical Engineering Journal

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h i g h l i g h t sA photoelectro-reactor was designed for Cu-EDTA destruction and Cu 2+ recovery.The percentages of Cu recovery and Cu-EDTA destruction were over 85% and 80%. Metal recovery efficiency for various metal-EDTA complexes was compared.a r t i c l e i n f o b s t r a c tIn this paper, a tubular photoelectrocatalytic reactor using the TiO 2 /Ti mesh anode was designed for the destruction of Cu-EDTA complex and recovery of liberated Cu 2+ ions in a continuous mode. Its performance was evaluated in terms of the destruction of the Cu-EDTA and the yield of Cu recovery as a function of the current density, hydraulic residence time, initial pH, and initial Cu-EDTA concentration. The efficiency of Cu recovery and Cu-EDTA destruction were determined to be over 85% and 80% with the current density of 1.13 A m À2 and the hydraulic residence time of 60 min at pH 3.5. Energy consumed for copper electrodeposition proved to be inversely proportional to the current density. Electrodeposition recovery of Pb ions from its EDTA solutions was possible, but low deposition recovery of Ni, Cd, and Zn was observed. The tubular photoelectrocatalytic reactor shows a high stability and may be scaled up for the destruction of metal-complexes and recovery of the metal ions.

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Simultaneous Recovery of Metals and Destruction of Organic Species: Cobalt and Phthalic Acid

Cited by 18 publications

References 17 publications

Enhancing destruction of copper (I) cyanide and subsequent recovery of Cu(I) by a novel electrochemical system combining activated carbon fiber and stainless steel cathodes

Enhancing destruction of copper (I) cyanide and subsequent recovery of Cu(I) by a novel electrochemical system combining activated carbon fiber and stainless steel cathodes

Recovery of critical metals from dilute leach solutions – Separation of indium from tin and lead

Photoelectrocatalytic oxidation of Cu-EDTA complex and electrodeposition recovery of Cu in a continuous tubular photoelectrochemical reactor

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