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Biochar can be tailored to valuable and engineered product with specified requirements, purpose of use, condition of soil, type of potential toxic elements (PTEs) to be remediated, crops cultivated and/or types of feedstocks used as raw materials. Biochar application for remediation of metal contaminated soil has received a great attention in the recent decades. However, minimal work has been done on the role of biochar in health risk reduction through PTE immobilization. This review paper focuses on the role of biochar in soil nutrient enhancement, PTE bioavailability and health risk reduction. The presented information revealed that the effect of biochar on PTE bioavailability varied greatly depending on biochar properties that are strongly influenced by synthesis method, pyrolysis temperature and feedstock. The application of biochar has reduced PTE bioavailability, for instance, the highest reduction for As (71 …