Electrochemical recovery of cobalt using nanoparticles film of copper hexacyanoferrates from aqueous solution

Long, Xinxin; Chen, Rongzhi; Tan, Jihua; Lu, Yong; Wang, Jixiang; Huang, Tijun; Qin, Lei

doi:10.1016/j.jhazmat.2019.121252

Cited by 19 publications

(12 citation statements)

References 51 publications

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“…It was found that the synthesized adsorbent had a Fe–C bond through the presence of bands at around 596 cm −1 . These bonds illustrate and confirm further the modification of the nanoparticles by hexacyanoferrates 55 .…”

Section: Resultssupporting

confidence: 76%

Novel composite materials of modified roasted date pits using ferrocyanides for the recovery of lithium ions from seawater reverse osmosis brine

Al-Absi

Abu-Dieyeh

Ben‐Hamadou

et al. 2021

Sci Rep

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In this paper, novel composite materials from modified roasted date pits using ferrocyanides were developed and investigated for the recovery of lithium ions (Li+) from seawater reverse osmosis (RO) brine. Two composite materials were prepared from roasted date pits (RDP) as supporting material, namely potassium copper hexacyanoferrate-date pits composite (RDP-FC-Cu), and potassium nickel hexacyanoferrate-date pits composite (RDP-FC-Ni). The physiochemical characterization of the RO brine revealed that it contained a variety of metals and salts such as strontium, zinc, lithium, and sodium chlorides. RDP-FC-Cu and RDP-FC-Ni exhibited enhanced chemical and physical characteristics than RDP. The optimum pH, which attained the highest adsorption removal (%) for all adsorbents, was at pH 6. In addition, the highest adsorption capacities for the adsorbents were observed at the initial lithium concentration of 100 mg/L. The BET surface area analysis confirmed the increase in the total surface area of the prepared composites from 2.518 m2/g for RDP to 4.758 m2/g for RDP-FC-Cu and 5.262 m2/g for RDP-FC-Ni. A strong sharp infrared peak appeared for the RDP-FC-Cu and RDP-FC-Ni at 2078 cm−1. This peak corresponds to the C≡N bond, which indicates the presence of potassium hexacyanoferrate, K4[Fe(CN)6]. The adsorption removal of lithium at a variety of pH ranges was the highest for RDP-FC-Cu followed by RDP-FC-Ni and RDP. The continuous increase in the adsorption capacity for lithium with increasing initial lithium concentrations was also observed. This could be mainly attributed to enhance and increased lithium mass transfer onto the available adsorption active sites on the adsorbents’ surface. The differences in the adsorption in terms of percent adsorption removal were clear and significant between the three adsorbents (P value < 0.05). All adsorbents in the study showed a high lithium desorption percentage as high as 99%. Both composites achieved full recoveries of lithium from the RO brine sample despite the presence of various other competing ions.

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Section: Resultssupporting

confidence: 76%

Novel composite materials of modified roasted date pits using ferrocyanides for the recovery of lithium ions from seawater reverse osmosis brine

Al-Absi

Abu-Dieyeh

Ben‐Hamadou

et al. 2021

Sci Rep

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“…The removal of Co 2+ in solution with competing ions was studied; the presence of Li + , Cu 2+ , and Al 3+ in solution did not affect the removal performance of Co 2+ , whereas the presence of Ni 2+ resulted in null Co 2+ removal. Furthermore, in the case of Ni 2+ it is not evident if this system was able to selectively remove Ni 2+ from a Co 2+ -Ni 2+ solution, or if neither of the two metals was removed ( Long et al., 2020 ). A Mo 6 S 8 (Chevrel phase) electrochemical transfer junction (ETJ) was used for the separation of Co 2+ from Ni 2+ .…”

Section: Electrochemical Separations For Selective Recoverymentioning

confidence: 99%

Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks

Kim¹,

Candeago²,

Rim³

et al. 2021

iScience

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Summary Critical minerals are essential for the ever-increasing urban and industrial activities in modern society. The shift to cost-efficient and ecofriendly urban mining can be an avenue to replace the traditional linear flow of virgin-mined materials. Electrochemical separation technologies provide a sustainable approach to metal recovery, through possible integration with renewable energy, the minimization of external chemical input, as well as reducing secondary pollution. In this review, recent advances in electrochemically mediated technologies for metal recovery are discussed, with a focus on rare earth elements and other key critical materials for the modern circular economy. Given the extreme heterogeneity of hydrometallurgically-derived media of complex feedstocks, we focus on the nature of molecular selectivity in various electrochemically assisted recovery techniques. Finally, we provide a perspective on the challenges and opportunities for process intensification in critical materials recycling, especially through combining electrochemical and hydrometallurgical separation steps.

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“…Notably, the peak position also shifted slightly with the change of scan rate, resulting from concentration polarization at high scan rates . The separate redox process involved the intercalation and deintercalation of Ca 2+ ions with CuHCF, according to the following reaction , In galvanostatic charge/discharge (GCD) measurements, the discharge behavior is always considered a significant parameter related to the electrosorption performance. GCD curves of the CuHCF electrode at different current densities are presented in Figure b, which were taken for calculating the specific capacitance of CuHCF according to eq in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

“…Notably, the peak position also shifted slightly with the change of scan rate, resulting from concentration polarization at high scan rates. 45 The separate redox process involved the intercalation and deintercalation of Ca 2+ ions with CuHCF, according to the following reaction 46,47…”

Section: Methodsmentioning

confidence: 99%

Selective Pseudocapacitive Deionization of Calcium Ions in Copper Hexacyanoferrate

Zhou

Wang

et al. 2020

ACS Appl. Mater. Interfaces

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In recent years, the capacitive deionization (CDI) technology has gradually become a promising technology for hard water treatment. Up to now, most of the work for water softening in CDI was severely limited by the inferior selectivity and electrosorption performances of carbon-based electrodes in spite of combining Ca 2+ -selective ion-exchange resin or membranes. Pseudocapacitive electrode materials that selectively interact with specific ions by Faradic redox reactions or ion (de)intercalation offer an alternative strategy for highly selective electrosorption of Ca 2+ from water because of brilliant ion adsorption capacity. Here, we first used copper hexacyanoferrate (CuHCF) as a pseudocapacitive electrode to methodically study the selective pseudocapacitive deionization of Ca 2+ over Na + and Mg 2+ . Using the hybrid CDI cell consisting of a CuHCF cathode and an activated carbon anode without any ion-exchange membrane, the outstanding Ca 2+ electrosorption capacity of 42.8 mg•g −1 and superior selectivity &(Ca 2+ /Na + ) of 3.05 at a molar ratio of 10:1 were obtained at 1.4 V, surpassing those of the reported carbon-based electrodes. Finally, electrochemical measurements and molecular dynamics (MD) simulations provided an in-depth understanding of the selective pseudocapacitive deionization of Ca 2+ ions in a CuHCF electrode. Our study would be helpful for developing high-efficiency selective electrosorption of target charged ions by intrinsic properties of pseudocapacitive materials.

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Electrochemical recovery of cobalt using nanoparticles film of copper hexacyanoferrates from aqueous solution

Cited by 19 publications

References 51 publications

Novel composite materials of modified roasted date pits using ferrocyanides for the recovery of lithium ions from seawater reverse osmosis brine

Novel composite materials of modified roasted date pits using ferrocyanides for the recovery of lithium ions from seawater reverse osmosis brine

Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks

Selective Pseudocapacitive Deionization of Calcium Ions in Copper Hexacyanoferrate

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