Remediation of Cd-Contaminated Soil by Modified Nanoscale Zero-Valent Iron: Role of Plant Root Exudates and Inner Mechanisms
Abstract
:1. Introduction
2. Materials and Methods
2.1. Soil Characterization and Preparation
2.2. Nanoparticles Synthesis and Characterization
2.3. Experimental Design of Simulated Pore Water and Rhizosphere Environment
2.4. Fractions of Cd in the Soil Samples
2.5. Methods for the Detection of Soil Physico–Chemical Properties
2.6. High-Throughput Sequencing
2.7. Statistical Analysis
3. Results and Discussion
3.1. Materials Characterization
3.2. Effect of CA Concentration on Removal of Cd(Ⅱ) from Aqueous Phase
3.3. Effect of CA on the Removal of Cd2+ from Water by Modified nZVI under Different pH
3.4. The Changes of Reaction Products in the Water System
3.5. Distribution of Cd Speciation in Soil Samples
3.6. Changes in Soil Properties
3.7. Shift of Bacterial Community Composition and Structure under the Experimental Conditions
3.8. The Interaction Mechanism between CA and nZVI under Cd Stress and the Response Mechanism of Microorganisms
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Huang, D.; Yang, Y.; Deng, R.; Gong, X.; Zhou, W.; Chen, S.; Li, B.; Wang, G. Remediation of Cd-Contaminated Soil by Modified Nanoscale Zero-Valent Iron: Role of Plant Root Exudates and Inner Mechanisms. Int. J. Environ. Res. Public Health 2021, 18, 5887. https://doi.org/10.3390/ijerph18115887
Huang D, Yang Y, Deng R, Gong X, Zhou W, Chen S, Li B, Wang G. Remediation of Cd-Contaminated Soil by Modified Nanoscale Zero-Valent Iron: Role of Plant Root Exudates and Inner Mechanisms. International Journal of Environmental Research and Public Health. 2021; 18(11):5887. https://doi.org/10.3390/ijerph18115887
Chicago/Turabian StyleHuang, Danlian, Yunhe Yang, Rui Deng, Xiaomin Gong, Wei Zhou, Sha Chen, Bo Li, and Guangfu Wang. 2021. "Remediation of Cd-Contaminated Soil by Modified Nanoscale Zero-Valent Iron: Role of Plant Root Exudates and Inner Mechanisms" International Journal of Environmental Research and Public Health 18, no. 11: 5887. https://doi.org/10.3390/ijerph18115887