In a study published in Scientific Reports, Valentina Mazzurco-Miritana, Laura Passatore, and colleagues investigated the use of biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More to remediate soil contaminated with hydrocarbons and copper. The research explored biochar’s effectiveness alone and in combination with bioaugmentation (adding microorganisms) and phytoremediationThis is a technique that uses plants to clean up contaminated soil or water. Biochar can enhance phytoremediation by improving soil conditions and promoting plant growth, allowing plants to absorb and break down pollutants more effectively.   More (using plants).  

The study revealed that biochar alone increased hydrocarbon degradation from 46% in untreated soil to 66.7%. Combining biochar with a microbial consortium further increased hydrocarbon removal up to 90%. Additionally, biochar application led to a 1.4 to 2-fold increase in the fraction of copper bound to organic matter, reducing its bioavailability. The soil microbial abundance also increased over time, particularly with the combination of biochar and bioaugmentation.  

The findings indicate that biochar is a promising tool for soil remediation. It enhances hydrocarbon removal and reduces the bioavailability of copper. The combination of biochar with microbial consortia proves to be particularly effective in achieving high levels of hydrocarbon removal. This research contributes valuable insights for developing strategies to restore contaminated soils.  

SOURCE: Mazzurco-Miritana, V., Passatore, L., Zacchini, M., Pietrini, F., Peruzzi, E., Carloni, S., … & Nogués, I. (2025). Promoting the remediation of contaminated soils using biochar in combination with bioaugmentation and phytoremediation techniques. Scientific Reports, 15(11231).