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PCDDs, PCDFs, and PCBs present in soil can be hydrodechlorinated without a preliminary separation (extraction) step using a nano‐size dispersed mixture of metallic Ca and CaO (206 nm average particle size). The treatment is quite simple: grinding in an electric mortar (100 rpm) at room temperature in open atmosphere for 24 h, producing up to 91, 99 and 97% hydrodechlorination yield for PCDDs, PCDFs...
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