Biochar: Acinetobacter driven rhizoremediation of arsenic contaminated soil.
Hameed M, Umer M, Saeed M, Bostan N, Ilyas N
Phytoremediation
Arsenic naturally contaminates soils in many regions and can silently enter leafy vegetables like spinach that people eat every day, and this low-cost, chemical-free method could make contaminated garden and farm soils safer for growing food.
Researchers found that a specific type of soil bacteria, combined with biochar (a charcoal-like material made from burned wood), can pull harmful arsenic out of contaminated soil and protect plants growing in it. When spinach was grown in arsenic-polluted soil treated with both the bacteria and biochar together, the plants grew bigger, stayed greener, and contained far less arsenic than untreated plants. It's a natural, biology-based cleanup approach that could one day help farmers and gardeners make polluted land safe for growing food again.
Key Findings
Co-applying Acinetobacter bacteria and biochar reduced arsenic in spinach shoots by 47% and in roots by 43% compared to untreated contaminated soil.
Spinach grown with the combined treatment showed improved growth, including 22% longer shoots, 24% longer roots, and 22% higher chlorophyll levels.
Biochar used in the study was produced from Himalayan cedar (Cedrus deodara) wood shavings, demonstrating a practical, locally-sourceable amendment material.
chevron_right Technical Summary
Combining a soil bacterium (Acinetobacter) with biochar made from Himalayan cedar wood dramatically reduced arsenic levels in contaminated soil and helped spinach grow healthier — cutting arsenic in plant shoots by nearly half.
Abstract Preview
Arsenic accumulation is becoming a major pollutant fueled by natural and anthropogenic activities. Arsenic contamination degrades the soil fertility and make it unsuitable for plants growth. Variou...
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