Removal of pyrene in the soil after composting with organic wastes following 25 days of treatment. Results are presented as average of two samples with standard deviation. OFMSW:raw organic fraction of municipal solid wastes; COFMSW:industrial compost from OFMSW composting; HCOFMSW: compost derived from home composting of OFMSW; ADS: anaerobically digested sludge; NDS: non-digested activated sludge; CNDS: centrifuged non-digested activated sludge.