August 19, 2025Scientific ReportsOpen Access

Passivation effect of modified biochar on cadmium in mining contaminated soil

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Significant reduction of cadmium in edible parts of Chinese cabbage by 66.4%, improving safety for consumption.
KMnO₄-modified biochar treatment enhanced soil pH from 6.3 to 6.7, indicating better soil conditions.
Control (CK) compared with treatment showed T2 reduced available cadmium by 43.4% in contaminated soil.
Research supports using modified biochar in contaminated soils to promote resource recycling and environmental health.

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Pot experiment shows KMnO₄-modified biochar lowers cadmium levels in Chinese cabbage, indicating soil health improvement.

Mu et al. (2025) studied this question.

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