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Removal of Trace Cu 2+ from Water by Thermo-Modified Micron Bamboo Charcoal and the Effects of Dosage

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  • Xinmei Li

    (School of Environment & Resources, Anhui Agricultural University, Hefei 230036, China)

  • Wenqian Gui

    (School of Environment & Resources, Anhui Agricultural University, Hefei 230036, China)

  • Uulen Batzorig

    (School of Environment & Resources, Anhui Agricultural University, Hefei 230036, China)

  • Rong Zhang

    (School of Environment & Resources, Anhui Agricultural University, Hefei 230036, China)

  • Hui Li

    (School of Environment & Resources, Anhui Agricultural University, Hefei 230036, China)

  • Dandan Pan

    (School of Environment & Resources, Anhui Agricultural University, Hefei 230036, China)

Abstract

Chronic copper intoxication via drinking water induces diseases and physiological toxicity. Bamboo charcoal has been applied in the treatment of copper (Cu 2+ ) in water. However, the adsorption by micron bamboo charcoal (MBC) of trace Cu 2+ in tap drinking water and the underlying factors behind it have not been sufficiently reported. In this study, to improve the adsorption by MBC of trace levels of Cu 2+ in drinking water, MBC was thermo-modified and characterized. Through batch experiments, the adsorption equilibrium was analyzed, and isotherm models were simulated. The removal rates and the optimization were investigated through a general full factorial design including the thermo-modified temperature (MT), initial concentration (C 0 ), and dosage. The results indicated that the thermo-modification significantly improved the removal by MBC of Cu 2+ at trace level C 0 . The satisfactorily low level of 0.12 ± 0.01 mg⋅L −1 was achieved in the range of C 0 from 0.5 to 2.0 mg⋅L −1 within the short contact time of 0.5 h. The processes conformed to the Freundlich and Langmuir adsorption isothermal models at a C 0 lower than 4.0 mg⋅L −1 and higher than 8.0 mg⋅L −1 . The correlation between C 0 and dosage played an important role in the removal of Cu 2+ . This work proposes the application of the ecofriendly material MBC and an optimization mode in the removal of trace Cu 2+ from tap drinking water. It is also revealed that the positive and negative correlation and the “critical point” of the removal rate with dosage depend on the initial concentrations.

Suggested Citation

  • Xinmei Li & Wenqian Gui & Uulen Batzorig & Rong Zhang & Hui Li & Dandan Pan, 2024. "Removal of Trace Cu 2+ from Water by Thermo-Modified Micron Bamboo Charcoal and the Effects of Dosage," Sustainability, MDPI, vol. 16(17), pages 1-13, September.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:17:p:7835-:d:1474022
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    References listed on IDEAS

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    1. Yongming Liu & Haishuang Wang & Yuanyuan Cui & Nan Chen, 2023. "Removal of Copper Ions from Wastewater: A Review," IJERPH, MDPI, vol. 20(5), pages 1-23, February.
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