Abstract
In order to explore the utilization of Eucalyptus sawdust (C) and develop its remediation potential in cadmium and arsenic contaminated soil, Eucalyptus sawdust were modified by FeCl3 and NaOH coprecipitation (MC). Characterization technology and pot experiment were used to explore the adsorption mechanism of cadmium and arsenic by MC and the effect of soil remediation. The results showed that iron oxide was loaded on the surface of Eucalyptus sawdust and destroyed the semi fiber structure. The adsorption mechanisms of cadmium and arsenic included electrostatic attraction, precipitation, complexation, redox. The soil pH value reduced by 0.12–0.18 units with 0.25%–1% ratio of application rates of MC to soil weight treatment; The contents of available cadmium and arsenic were reduced by 18%–25% and 12%–18%; MC could promote the transformation of Cd and As from highly active formation to low active formation and had a good application prospect for Cd and As compound pollution remediation.
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The study was supported by the Yunnan Key Research and Development Program (2019BC001-04).
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Yang, J., Liang, X., Jiang, N. et al. Adsorption Characteristics of Modified Eucalyptus Sawdust for Cadmium and Arsenic and Its Potential for Soil Remediation. Bull Environ Contam Toxicol 108, 1056–1063 (2022). https://doi.org/10.1007/s00128-021-03455-6
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DOI: https://doi.org/10.1007/s00128-021-03455-6