Researchers investigated the potential of using Miscanthus sp., a pioneer plant from abandoned mines, to create biochar for environmental remediation. Miscanthus sp. residues, known for accumulating heavy metals, were subjected to pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More at temperatures ranging from 300°C to 700°C. The study focused on stabilizing these heavy metals and assessing the resulting biochar’s suitability for environmental applications.

The research revealed that pyrolysis effectively stabilizes heavy metals, especially cadmium (Cd). At 700°C, the biochar exhibited a significant reduction in the more mobile and hazardous forms of Cd, decreasing from 69.91% to 2.52%. Additionally, higher pyrolysis temperatures improved the biochar’s ability to adsorb Cd, likely due to increased alkalinity and precipitation effects.

Environmental risk assessments indicated that biochars produced at temperatures above 500°C posed lower environmental risks, making them suitable for safe reutilization. This finding is crucial as it addresses the challenge of managing heavy metal-laden biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More from 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 efforts.

The study concluded that Miscanthus-derived biochars, particularly those produced at higher pyrolysis temperatures, hold promise for environmental remediation. This process not only stabilizes heavy metals but also offers a method to reuse biomass from contaminated sites, thus contributing to sustainable waste management and soil restoration efforts.