Integration of microbial reductive dehalogenation with persulfate activation and oxidation (Bio-RD-PAO) for complete attenuation of organohalides

Abstract Due to the toxicity of bioaccumulative organohalides human beings and ecosystems, a variety biotic abiotic remediation methods have been developed remove from contaminated environments. Bioremediation employing organohalide-respiring bacteria (OHRB)-mediated microbial reductive dehalogenation (Bio-RD) represents cost-effective environmentally friendly approach attenuate highly-halogenated organohalides, specifically in soil, sediment other anoxic Nonetheless, many factors severely restrict implications OHRB-based bioremediation, including incomplete dehalogenation, low abundance OHRB consequent dechlorination activity. Recently, development situ chemical oxidation (ISCO) based on sulfate radicals (SO 4 ·− ) via persulfate activation (PAO) process has attracted tremendous research interest for lowly-halogenated due its following advantages, e.g., complete attenuation, high reactivity no selectivity organohalides. Therefore, integration OHRB-mediated Bio-RD subsequent PAO (Bio-RD-PAO) may provide promising solution In this review, we first an overview current progress compare their limitations advantages. We then critically discuss attenuation prospects future applications. Overall, Bio-RD-PAO opens up opportunities effective persistent organohalide pollution.