Integrated Phytoremediation And Biochar Strategy For Sustainable Restoration Of Heavy Metal-Contaminated Soils

Abstract

Heavy metal contamination in soils is a pervasive environmental challenge with serious implications for ecosystem health and agricultural sustainability. Traditional remediation methods are often costly and environmentally disruptive, highlighting the need for sustainable alternatives. This article reviews recent advances in the integrated application of phytoremediation and biochar amendment technologies for the restoration of heavy metal-contaminated soils. Synthesizing research from 2020 to 2025, the article discusses the mechanisms by which biochar improves soil quality and immobilizes heavy metals, while phytoremediation harnesses plant and microbial processes for metal uptake and stabilization. It highlights innovations in engineered biochars, microbial inoculants, and nano-biochar technologies that enhance remediation efficiency. Field trials demonstrating practical applications and scalability are also examined. Finally, the article addresses challenges, future research directions, and the potential for integrating these strategies into circular bioeconomy and climate-smart frameworks for sustainable land management.