heavy metal immobilization

Dosage of Sulfidized Nano Zero-Valent Iron, Soil Moisture and pH Influences on Fraction of Arsenic and Cadmium in Contaminated Paddy Soil

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This study examines using tiny iron particles coated with sulfur to clean rice paddy soils contaminated with arsenic and cadmium. The researchers tested different amounts of this material, soil moisture levels, and soil acidity to find the best conditions for trapping these harmful metals in the soil so rice plants cannot absorb them. They found that using a moderate amount of the material works best and that keeping the soil wet helps prevent the metals from becoming available to plants.

The effect of calcium on the removal of Cd2+ in the formation of biogenic secondary iron minerals

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Acid mine drainage from mining operations contains toxic cadmium that pollutes water supplies. This research shows that naturally occurring bacteria (Acidithiobacillus ferrooxidans) can help remove cadmium by forming iron minerals. Adding calcium and potassium ions together significantly improves this process, with cadmium being trapped in mineral precipitates rather than just adsorbed to surfaces. This biological approach offers a practical and sustainable method for treating contaminated mining water.

Current state of the heavy metal pollution, microbial diversity, and bioremediation experiments around the Qixia Mountain lead–zinc mine in Nanjing, China

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A lead-zinc mine in Nanjing, China has contaminated surrounding soils with dangerous heavy metals like lead, zinc, and cadmium over 70 years of operation. Researchers discovered that combining amaranth plants with a beneficial bacterium called Bacillus velezensis dramatically reduced heavy metal pollution in soil, lowering pollution levels from severely contaminated to acceptable levels. This plant-microorganism approach also improved plant growth while reducing heavy metal uptake in the edible parts of crops, offering a practical solution to make farmland around mines safer for growing food.

Use of Anaerobic Digestate Inoculated with Fungi as a Soil Amendment for Soil Remediation: A Systematic Review

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This research examines how using fungi-treated digestate (a byproduct from biogas production) can clean polluted soil more effectively than using either alone. The study shows that combining digestate with fungi successfully removes heavy metals like lead and cadmium from soil while promoting plant growth. The best results came from using digestate made from cattle manure. This approach offers an affordable and sustainable way to restore contaminated soils.

Effects of Long-Term Heavy Metal Pollution on Microbial Community Structure in Soil

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Heavy metals from mining operations contaminate farmland soil and reduce its quality. This research examined how different types of bacteria and fungi adapt to living in heavily polluted soil by collecting samples from a contaminated farm in China. The study found that specific microorganism species thrive in different levels of contamination and could potentially be used to help clean up polluted soils through natural biological processes.

Roles of mobile genetic elements and biosynthetic gene clusters in environmental adaptation of acidophilic archaeon Ferroplasma to extreme polluted environments

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Scientists discovered how a special acid-loving microorganism called Ferroplasma survives and thrives in highly polluted mine drainage environments rich in dangerous heavy metals. The study revealed that these microorganisms use special genetic elements like jumping genes and metabolite-producing genes to adapt to these extreme conditions, enabling them to help clean up pollution. This discovery could lead to better biological methods for treating contaminated environments and making water safer near old mining sites.

Enhancement of Activated Carbon on Anaerobic Fermentation of Heavy-Metal-Contaminated Plants: Insights into Microbial Responses

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This research shows that when plants contaminated with heavy metals are processed for energy production through anaerobic fermentation, adding activated carbon dramatically improves the efficiency of biogas generation. The activated carbon acts like a filter to reduce the toxic effects of heavy metals while providing surfaces for beneficial microorganisms to grow and work more effectively. The study reveals how specific bacteria and microbes adapt to these conditions, making the overall process more productive and potentially opening new possibilities for recycling contaminated plant waste into useful energy.

Exploring Fungal Communication Mechanisms in the Rhizosphere Microbiome for a Sustainable Green Agriculture

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Fungi in soil communicate with each other and plants through chemical signals, forming protective layers called biofilms that help them cooperate and survive. These fungal communication networks can be either beneficial, helping plants grow and fight diseases, or harmful, causing crop infections and producing toxins. By better understanding how fungi talk to each other, scientists can develop natural ways to improve agriculture and clean up polluted soils without using harmful chemicals.

Soil health alterations via compost additions to natural and remediated heavy metal-contaminated mineland soils

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Abandoned mining sites in Missouri left contaminated soils that couldn’t support plant growth. Researchers tested whether adding compost could restore these soils to health comparable to natural prairie. They found that applying 180 tons of compost per hectare successfully restored soil quality and plant growth while keeping heavy metal levels safe for livestock, making it an effective and affordable solution for healing mining-damaged lands.

therapeutic action: heavy metal immobilization