Sorption of As, Cd, and Pb by soil amendments: in situ immobilization mechanisms and implementation in contaminated agricultural soils

Lwin, Chaw Su; Kim, Young-Nam; Lee, Mina; Kim, Kwon-Rae

doi:10.1007/s11356-023-29298-8

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Cited by 4 publications

References 43 publications

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The longevity evaluation of multi-metal stabilization by MgO in Pb/Zn smelter–contaminated soils

Xu,

et al. 2024

Environ Sci Pollut Res

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The longevity evaluation of multi-metal stabilization by MgO in Pb/Zn smelter–contaminated soils

Xu,

et al. 2024

Environ Sci Pollut Res

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Bacillus velezensis combined with phosphogypsum promotes the growth of Cynodon dactylon L. by influencing rhizosphere soil nutrients, Pb bioavailability and microbial community composition in lead–contaminated soil

Wen,

Jiang,

Yang

et al. 2025

Environmental Technology & Innovation

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Adsorption capacity of red mud and steel slag for As, Cd, and Pb: implication to understanding the chemistry of immobilization in soils

Lwin,

Lee,

Jung

et al. 2024

Preprint

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Heavy metal(loids) (HM) contamination in soil is a significant concern, posing risks to the environment and public health. This study evaluated the sorption efficiencies of red mud (RM), neutralized red mud (NRM), and steel slag (SS) as adsorbents for using in HM-immobilization. The characteristics of adsorbents were analyzed using SEM and BET. Batch adsorption experiments were conducted to study the adsorption of arsenic (As), cadmium (Cd), and lead (Pb) onto the selected adsorbents at initial metal concentrations of 20, 50, 100, 200, 500, and 1000 mg L–1. Adsorption isotherms of As, Cd, and Pb were simultaneously investigated using adsorption experimental data. Results showed that equilibrium sorption efficiencies of RM and NRM were greatly increased compared to SS, since characterization of RM and NRM have larger specific surface area and pore volumes and diameter than SS. The highest sorption efficiencies of RM, NRM, and SS were seen at 20 mg L–1, with 32.59%, 30.21%, and 23.81% for As; 99.51%, 94.55%, and 11.43% for Cd; and 99.46%, 99.29%, and 30.22% for Pb, respectively. The data were fitted to Langmuir isotherm model, showing that RM, while not much different from NRM, had the highest maximum adsorption capacity and sorption energy for HM ions, especially Cd and Pb. This study suggests that RM could be a cost-effective alternative adsorbent for HM ion retention, making it suitable for on-site metal-immobilization. Finally, since NRM demonstrated good adsorption properties like RM, it can be an effective alternative for application in alkaline soils instead of RM.

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Sorption of As, Cd, and Pb by soil amendments: in situ immobilization mechanisms and implementation in contaminated agricultural soils

Cited by 4 publications

References 43 publications

The longevity evaluation of multi-metal stabilization by MgO in Pb/Zn smelter–contaminated soils

The longevity evaluation of multi-metal stabilization by MgO in Pb/Zn smelter–contaminated soils

Bacillus velezensis combined with phosphogypsum promotes the growth of Cynodon dactylon L. by influencing rhizosphere soil nutrients, Pb bioavailability and microbial community composition in lead–contaminated soil

Adsorption capacity of red mud and steel slag for As, Cd, and Pb: implication to understanding the chemistry of immobilization in soils

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