Gold recovery through synergetic adsorption and reduction using acid–base additive-reinforced tubular carbon nanofibers

Mudasir Ahmad; Menier Al-Anazi; Muhammad Rizwan Tariq; Idrees Khan; Baoling Zhang

doi:10.1002/aic.18581

Gold recovery through synergetic adsorption and reduction using acid–base additive-reinforced tubular carbon nanofibers

Mudasir Ahmad, Menier Al-Anazi, Muhammad Rizwan Tariq, Idrees Khan, Baoling Zhang

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In response to the increasing demand for gold in electronic manufacturing, this study addresses the urgent need for gold recycling from electronic waste (E-waste) to ensure the environment and energy safety. This study focuses on the preparation of the tubular carbon nanofibers (TCNFs) integrating -NH₄⁺ and -SO₃⁻ groups into TCNF-SO₃⁻-NH₄⁺, which exhibited remarkable gold adsorption capacity (2003.25 ± 0.23 mg/g) and selectivity (K_d; 41.7 × 10³ mL/g) at lower pH. TCNF-SO₃⁻-NH₄⁺ achieved a 99.77% gold adsorption efficiency under lower pH conditions (pH = 1) from E-waste. The adsorption capacity reached 3.54 ± 0.11 mg/g at an initial concentration of 0.85 mg/L. The results highlight the efficacy of TCNF-SO₃⁻-NH₄⁺ for extracting gold and other precious metal ions from E-waste, presenting a promising solution for clean energy and environmental protection.

Original language	English
Article number	e18581
Journal	AIChE Journal
Volume	70
Issue number	12
DOIs	https://doi.org/10.1002/aic.18581
State	Published - Dec 2024

Keywords

ammoniating tubular carbon nanofibers
E-waste
sustainable gold recovery

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title = "Gold recovery through synergetic adsorption and reduction using acid–base additive-reinforced tubular carbon nanofibers",

abstract = "In response to the increasing demand for gold in electronic manufacturing, this study addresses the urgent need for gold recycling from electronic waste (E-waste) to ensure the environment and energy safety. This study focuses on the preparation of the tubular carbon nanofibers (TCNFs) integrating -NH4+ and -SO3− groups into TCNF-SO3−-NH4+, which exhibited remarkable gold adsorption capacity (2003.25 ± 0.23 mg/g) and selectivity (Kd; 41.7 × 103 mL/g) at lower pH. TCNF-SO3−-NH4+ achieved a 99.77% gold adsorption efficiency under lower pH conditions (pH = 1) from E-waste. The adsorption capacity reached 3.54 ± 0.11 mg/g at an initial concentration of 0.85 mg/L. The results highlight the efficacy of TCNF-SO3−-NH4+ for extracting gold and other precious metal ions from E-waste, presenting a promising solution for clean energy and environmental protection.",

keywords = "ammoniating tubular carbon nanofibers, E-waste, sustainable gold recovery",

author = "Mudasir Ahmad and Menier Al-Anazi and Tariq, {Muhammad Rizwan} and Idrees Khan and Baoling Zhang",

note = "Publisher Copyright: {\textcopyright} 2024 American Institute of Chemical Engineers.",

year = "2024",

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doi = "10.1002/aic.18581",

language = "英语",

volume = "70",

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T1 - Gold recovery through synergetic adsorption and reduction using acid–base additive-reinforced tubular carbon nanofibers

AU - Ahmad, Mudasir

AU - Al-Anazi, Menier

AU - Tariq, Muhammad Rizwan

AU - Khan, Idrees

AU - Zhang, Baoling

PY - 2024/12

Y1 - 2024/12

N2 - In response to the increasing demand for gold in electronic manufacturing, this study addresses the urgent need for gold recycling from electronic waste (E-waste) to ensure the environment and energy safety. This study focuses on the preparation of the tubular carbon nanofibers (TCNFs) integrating -NH4+ and -SO3− groups into TCNF-SO3−-NH4+, which exhibited remarkable gold adsorption capacity (2003.25 ± 0.23 mg/g) and selectivity (Kd; 41.7 × 103 mL/g) at lower pH. TCNF-SO3−-NH4+ achieved a 99.77% gold adsorption efficiency under lower pH conditions (pH = 1) from E-waste. The adsorption capacity reached 3.54 ± 0.11 mg/g at an initial concentration of 0.85 mg/L. The results highlight the efficacy of TCNF-SO3−-NH4+ for extracting gold and other precious metal ions from E-waste, presenting a promising solution for clean energy and environmental protection.

AB - In response to the increasing demand for gold in electronic manufacturing, this study addresses the urgent need for gold recycling from electronic waste (E-waste) to ensure the environment and energy safety. This study focuses on the preparation of the tubular carbon nanofibers (TCNFs) integrating -NH4+ and -SO3− groups into TCNF-SO3−-NH4+, which exhibited remarkable gold adsorption capacity (2003.25 ± 0.23 mg/g) and selectivity (Kd; 41.7 × 103 mL/g) at lower pH. TCNF-SO3−-NH4+ achieved a 99.77% gold adsorption efficiency under lower pH conditions (pH = 1) from E-waste. The adsorption capacity reached 3.54 ± 0.11 mg/g at an initial concentration of 0.85 mg/L. The results highlight the efficacy of TCNF-SO3−-NH4+ for extracting gold and other precious metal ions from E-waste, presenting a promising solution for clean energy and environmental protection.

KW - ammoniating tubular carbon nanofibers

KW - E-waste

KW - sustainable gold recovery

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U2 - 10.1002/aic.18581

DO - 10.1002/aic.18581

M3 - 文章

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SN - 0001-1541

VL - 70

JO - AIChE Journal

JF - AIChE Journal

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M1 - e18581

ER -

Gold recovery through synergetic adsorption and reduction using acid–base additive-reinforced tubular carbon nanofibers

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