Evidence for PAH Removal Coupled to the First Steps of Anaerobic Digestion in Sewage Sludge

Table 2

µP maximum removal rates in biotic and spiked HLSS reactors (series A). Comparison with the µP removal rates calculated in the semicontinuous reactor at steady states [7].

Compound	HLSS maximum removal rates (µg/L/day)	Semicontinuous reactor removal rates (µg/L/day )
Fluorene	1.8 ± 0.1	1.8 ± 1.1
Phenanthrene	3.0 ± 0.3	4.0 ± 1.4
Fluoranthene	2.7 ± 0.7	3.1 ± 0.9
Pyrene	2.2 ± 0.5	3.6 ± 1.1
Benzo(a)anthracene	2.2 ± 0.7	4.4 ± 1.4
Chrysene	2.1 ± 0.8	3.3 ± 0.9
Benzo(b)fluoranthene	2.7 ± 1.0	3.9 ± 1.4
Benzo(k)fluoranthene	3.0 ± 0.8	3.5 ± 0.9
Benzo(a)pyrene	1.7 ± 1.1	1.7 ± 0.6
Dibenzo(a,h)anthracene	2.8 ± 1.0	3.3 ± 0.7
Benzo(g,h,i)perylene	1.6 ± 0.7	3.3 ± 1.0
Indeno(1,2,3,c,d)pyrene	0.4 ± 0.2	0.4 ± 0.2