Safe Utilization and Ecological Restoration of Heavy Metal Polluted Farmland

Dear Colleagues,

Heavy metals are naturally occurring elements that have a high density and are toxic to living organisms, including humans. Some common heavy metals include lead, mercury, cadmium, arsenic, nickel, copper and chromium. They can persist in the environment for long periods, and have been a significant environmental concern posing high risks to both ecosystems and human health.

To address heavy metal pollution, regulations and guidelines are implemented to control and minimize the release of heavy metals into the environment. This includes the enforcement of emission standards for industries, the proper management and disposal of hazardous waste, and the implementation of monitoring programs to assess the levels of heavy metal contamination in different environmental compartments.

The remediation of heavy metal-contaminated soil is crucial to mitigate the risks posed by this pollution. Several techniques are employed to remove or reduce heavy metals from the soil. Physical methods, such as excavation and soil capping, involve physically removing the contaminated soil or covering it with a barrier to prevent further contamination. Chemical methods, such as soil washing and chemical immobilization, aim to change the chemical properties of heavy metals in the soil, making them less mobile and less available to plants and organisms. Biological methods, such as the use of plants in phytoremediation, utilize certain plant species that can accumulate and remove heavy metals from the soil.

Dr. Bin Guo
Prof. Dr. Ying Feng
Guest Editors

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