Researchers at the University of Zanjan have made a groundbreaking discovery in environmental science, revealing how modified diatomite can reduce heavy metal uptake by plants. The study, published in the BMC Plant Biology journal, found that using 10% modified diatomite led to a significant decrease in lead, copper, chromium, and nickel in plants.
The contamination of soil with heavy metals poses a serious threat to ecosystems and human health. These toxic elements, often introduced through industrial activities, can enter the food chain and have detrimental effects. To combat this issue, researchers have been exploring various methods to remove or stabilize heavy metals in soils.
Diatomite, a naturally occurring compound, has been modified to enhance its ability to immobilize potential toxic elements. By increasing the electronegativity, surface area, and pore volume of diatomite, researchers were able to improve its binding capacity with heavy metals in soil.
In the study, researchers applied varying concentrations of modified diatomite to contaminated soils and monitored the levels of heavy metals in both the soils and the tissues of Calendula officinalis plants grown in these soils. The results were promising, showing a significant reduction in the bioaccumulation of heavy metals, except for zinc, in the treated soils.
Additionally, the application of modified diatomite improved the nutrient profile of the soil, leading to enhanced growth characteristics of Calendula officinalis. This research aligns with previous studies on the use of natural and modified inorganic compounds in soil remediation, showcasing the potential of these methods in sustainable agriculture practices.
Overall, the findings from the University of Zanjan offer a promising solution to the critical issue of soil contamination with heavy metals. By using modified diatomite as a soil amendment, researchers have demonstrated a cost-effective and sustainable approach to stabilizing heavy metals and improving soil health, with implications for ecological restoration and agricultural practices.
