Chitosan-based copper recovery from e-waste and its application in sustainable energy storage

Manickasundaram, Madhumitha; Lakshmanan, Kumaresan; Vediappan, Kumaran; Kancharla, Srinivasarao

doi:10.1016/j.cej.2024.149605

Cited by 5 publications

(2 citation statements)

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“…PCB contains copper, iron, nickel, aluminum, tin, zinc, silver, platinum, and palladium. In the mentioned elements, copper is present in PCB at a higher quantity compared to other elements . Also, copper has a higher affinity for oxygen in PCBs containing high-quantity metals than copper.…”

Section: Resultsmentioning

confidence: 99%

“…In the mentioned elements, copper is present in PCB at a higher quantity compared to other elements. 65 Also, copper has a higher affinity for oxygen in PCBs containing high-quantity metals than copper. Further, most of the metals easily get oxidized and converted into soluble ionic form under acidic conditions.…”

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: Resultsmentioning

confidence: 99%

Section: Electrode Preparation For Biosensing Of Ascorbic Acidmentioning

confidence: 99%