Cost-effective and eco-friendly copper recovery from waste printed circuit boards using organic chemical leaching

Nagarajan, Navashree; Panchatcharam, Parthasarathy

doi:10.1016/j.heliyon.2023.e13806

Cited by 18 publications

(7 citation statements)

References 23 publications

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“…67,68 Spectral features for cross-linked cellulose include peaks at C6 (∼60.9 ppm), C2 (∼72.24 ppm), C3 (∼76.39 ppm), C5 (∼63.94 ppm), C4 (∼81.47 ppm), C1 (∼101.35 ppm), C7 (∼59.97 ppm), and C8 (∼47.6 ppm), aligning with other NMR studies. 69 Phosphorylated cellulose exhibits new peaks at 12.34, 14.74, 24.54, 30.07, and 68.05 ppm, consistent with liquid 13 C NMR of D2EHPA, along with peaks at 156.02, 158.93, 161.68, 162.85, and 164.58 ppm confirming cellulose phosphorylation. Figure S5 displays the 31 P NMR spectrum of phosphorylated material, revealing peaks at 0.58, −0.58, and −1.80 ppm.…”

Section: Resultssupporting

confidence: 54%

“…Figure S4a,b presents solid-state 13 C NMR spectra of crosslinked cellulose and phosphorylated cellulose materials. The spectra reveal resonance lines within a defined spectral region (0−180 ppm), consistent with previous reports on cellulose.…”

Section: Resultsmentioning

confidence: 99%

“…In our work, we have maintained neutral conditions which also greatly suppressed the leaching of other metal ions into the solution. 66 The cross-linked cellulose and phosphorylated cellulose materials were characterized by solid-state 13 C NMR and 31 P NMR. Adamantane and ammonium dihydrogen phosphate are used as standards for 13 C NMR and 31 P NMR, respectively.…”

Section: Electrode Preparation For Biosensing Of Ascorbic Acidmentioning

confidence: 99%

“…66 The cross-linked cellulose and phosphorylated cellulose materials were characterized by solid-state 13 C NMR and 31 P NMR. Adamantane and ammonium dihydrogen phosphate are used as standards for 13 C NMR and 31 P NMR, respectively. The obtained spectra are presented in the Supporting Information in Figures S4 and S5.…”

Section: Electrode Preparation For Biosensing Of Ascorbic Acidmentioning

confidence: 99%

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Copper Recovery from Mobile Phone Printed Circuit Board E-Waste and Transforming into CuO@C for Electrode Material in Extended Gate Field-Effect Transistors Facilitating Non-Enzymatic Ascorbic Acid Detection

Mathaiyan,

Shabanur Matada,

Sivalingam

et al. 2024

ACS Sustainable Chem. Eng.

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This study presents a new approach for the simultaneous leaching and sorption of Cu(II) from waste printed circuit board (PCB) flakes using phosphorylated cellulose (P(O)-cellulose). The leaching-sorption experiments were conducted at various temperatures (25, 45, and 60 °C) and pH values (4, 7, and 10). Phosphorylated cellulose successfully facilitated the recovery of Cu(II) under optimal conditions identified at pH 7 and 60 °C, achieving a recovery efficiency of 35.9 mg/g. Further, the recovered Cu(II)-P(O)-cellulose was treated with glycine to form copper-glycinate for quantification. Cu(II)-P(O)-cellulose was then used to synthesize Cu/CuO and CuO nanoparticles supported on carbon (Cu/CuO@C and CuO@C) through calcination at 400 and 700 °C, respectively. The synthesized CuO@ C material exhibited remarkable performance as an electrode for ascorbic acid biosensing via the EGFET configuration. The dynamic study demonstrated its superior response to ascorbic acid in the concentration range of 20−2300 μM, with a response time of less than 6 s in 1× PBS, which mimics the physiological condition of body fluids. The CuO@C electrode displayed high sensitivity (821.94 μA•dec −1 •cm −2 ) with a low detection limit of 0.047 μM, showcasing its potential for sensitive and selective ascorbic acid detection. Utilizing a sustainable cellulose functionalized derivative, copper was extracted from e-waste PCBs and repurposed for biosensing applications.

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Section: Resultssupporting

confidence: 54%

Section: Resultsmentioning

confidence: 99%

Section: Electrode Preparation For Biosensing Of Ascorbic Acidmentioning

confidence: 99%

Section: Electrode Preparation For Biosensing Of Ascorbic Acidmentioning

confidence: 99%

See 2 more Smart Citations

Copper Recovery from Mobile Phone Printed Circuit Board E-Waste and Transforming into CuO@C for Electrode Material in Extended Gate Field-Effect Transistors Facilitating Non-Enzymatic Ascorbic Acid Detection

Mathaiyan,

Shabanur Matada,

Sivalingam

et al. 2024

ACS Sustainable Chem. Eng.

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“…Thus, the sensitivity of the biosensor can be improved by the application of Cu–Fe bimetallic nanoparticles for the detection of dopamine. In numerous metals, copper is a mild hydrogenation catalyst with low cost when compared to other noble metals [ 7 ]. It is incorporated with iron to produce the Cu–Fe bimetallic nanoparticles by the facile one-pot chemical synthesis.…”

Section: Introductionmentioning

confidence: 99%

Biosensor nanoarchitectonics of Cu–Fe-nanoparticles/Zeolite-A/Graphene nanocomposite for enhanced electrooxidation and dopamine detection

Nagarajan,

Panchatcharam

2023

Heliyon

Self Cite

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A Mature Tool to Address New Challenges: Harnessing Coordination Chemistry for The Sustainable Copper Recovery from Industrial and E‐Waste in The Age of Energy Transition

Ostellari,

Gross

2024

Eur J Inorg Chem

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Copper is arguably one of the most strategic metal for the energy transition, particularly in the shift from fossil fuel‐based engines to sustainable and renewable energy sources, with related and broader electrification efforts. While global copper mineral resources are far from depleted, their uneven distribution poses significant supply risks, especially in regions like Europe. In 2023, the European Union (EU) recognized this risk by designating copper as a strategic raw material (SRM), highlighting the need for innovative copper recovery processes. Copper recovery from industrial and electronic waste has been approached through various methods, primarily categorized into pyrometallurgy and solvo‐ and hydrometallurgy. The latter offers greater tunability and potential for sustainability, particularly when leveraging coordination chemistry. This review focuses on the most promising hydrometallurgical processes for copper recovery from industrial and e‐waste (i.e., electronic waste), with a special emphasis on the role of coordination chemistry in supporting these methods. We posed particular focus on the adaptability and versatility of the coordination chemistry‐based processes to the highly heterogenous composition of the copper‐containing wastes.

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Cost-effective and eco-friendly copper recovery from waste printed circuit boards using organic chemical leaching

Cited by 18 publications

References 23 publications

Copper Recovery from Mobile Phone Printed Circuit Board E-Waste and Transforming into CuO@C for Electrode Material in Extended Gate Field-Effect Transistors Facilitating Non-Enzymatic Ascorbic Acid Detection

Copper Recovery from Mobile Phone Printed Circuit Board E-Waste and Transforming into CuO@C for Electrode Material in Extended Gate Field-Effect Transistors Facilitating Non-Enzymatic Ascorbic Acid Detection

Biosensor nanoarchitectonics of Cu–Fe-nanoparticles/Zeolite-A/Graphene nanocomposite for enhanced electrooxidation and dopamine detection

A Mature Tool to Address New Challenges: Harnessing Coordination Chemistry for The Sustainable Copper Recovery from Industrial and E‐Waste in The Age of Energy Transition

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