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• Medicinal Herb Waste Transformed Into Phosphorus-Enhanced Biochar to Neutralize Toxic Heavy Metals and Increase Crop Yields by 61 Percent

  Published: Mar 13, 2026

  Section: Science & Tech

  Researchers have successfully converted Salvia miltiorrhiza dregs into a phosphorus-modified biochar that effectively immobilizes lead and cadmium in contaminated environments. The...