Synergic remediation of polycyclic aromatic hydrocarbon-contaminated soil by a combined system of persulfate oxidation activated by biochar and phytoremediation with basil: A compatible, robust, and sustainable approach

•FBC-APS with basil can effectively remove PAHs from soil.•The combined treatment ameliorated the damage of soil microbiota after advanced oxidation.•FBC-APS could act as potential fertilizer for basil growth in soil.•The essential oils extracted from basil were deemed free of PAHs contamination.