Effects of metal stabilizers on soil hydraulic characteristics and mobility of cadmium

Liu, Lirong; Luo, Dinggui; Wei, Lezhang; Liu, Yu; Huang, Sibin; Huang, Liangbin; Xie, Zhenyu; Xiao, Tangfu; Huang, Xiao; Wu, Qihang

doi:10.1007/s11356-020-09483-9

Cited by 8 publications

(2 citation statements)

References 67 publications

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“…Due to its cost‐effectiveness, biodegradability, biocompatibility, non‐toxicity, and exceptional adsorption capacity, it is widely acknowledged as a promising biological adsorbent for the efficient removal of HMs. [13–15] . Powdered CTS typically exhibits inadequate adsorption capacity for HM ions due to its limited active site availability and low specific surface area.…”

Section: Introductionmentioning

confidence: 99%

“…The hydrophobic inner cavity of its symmetrical truncated cone structure enables effective recognition of numerous guest molecules. Due to its cost-effectiveness, biodegradability, biocompatibility, non-toxicity, and exceptional adsorption capacity, it is widely acknowledged as a promising biological adsorbent for the efficient removal of HMs.. [13][14][15] Powdered CTS typically exhibits inadequate adsorption capacity for HM ions due to its limited active site availability and low specific surface area. Moreover, the high solubility and poor stability of CTS powder in acidic media pose challenges for recovery, significantly impeding its widespread application in HM ion removal.…”

Section: Introductionmentioning

confidence: 99%

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The Stabilizing Effect of Chitosan‐Modified Biochar (β‐CD/C‐BC) on Agricultural Soil Contaminated by the Cd‐Pyr Complex

Lin,

Li,

et al. 2024

ChemistrySelect

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The composite pollution of heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in agricultural soil is increasingly severe. HMs can undergo surface adsorption, complexation, or chemical reactions to transform from bioavailable species to residual species, achieving chemical morphological stability. However, these processes have no effect on PAHs. Biochar (BC), due to its inherent characteristics, can significantly enhance the stability of PAHs and is recommended as a potential co‐stabilizing material for both heavy metals and PAHs. In this study, rice husk biochar modified with β‐cyclodextrin and chitosan (β‐CD/C‐BC) was utilized to stabilize agricultural soil contaminated by Cd and Pyrene (Pyr). One‐way tests were conducted on the dosage and curing time of biochar after a complete cycle of treatment. The results demonstrated that the optimal effect was achieved when the dosage of β‐CD/C‐BC was 7.5 % or the curing time was 21 days. The removal efficiencies for Cd and Pyr were found to be 84.62 %, 64.22 % or 85.90 %, 65.78 %, respectively. Additionally, BCR testing revealed that β‐CD/C‐BC could convert HMs in soil into a residual state (from 32 % to 82 %) with the highest stabilization rate, thereby reducing their migration ability and ecological risk.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%