Choosing the right biochar can lock toxic cadmium in soil, study finds
Cadmium contamination in agricultural soils is a growing global concern, threatening food safety, crop productivity, and human health. New research shows that not all biochars work the same way and that choosing the right type of biochar can make the difference between trapping toxic metals in soil or unintentionally making them more mobile.
In a study published online on January 15, 2026, researchers report that biochar produced at high temperatures can work together with soil microbes to effectively immobilize cadmium, one of the most hazardous heavy metals found in farmland ...