Biogas and nutrients from blackwater, lawn cuttings and grease trap residues—experiments for Hamburg’s Jenfelder Au district

Table 3 Characterization of blackwater, our own analysis in comparison with literature values

Parameter	Unit	Own analysis		Literature
		No. of samples	AWW^a	Wendland [37]	Alp [3]
		No. of samples	Average ± SD^b	Average ± SD	Average ± SD
DM	%	10	0.57 ± 0.15	0.65 ± 0.21	0.48 ± 0.03
oDM	% DM	10	55.54 ± 6.35	62.36 ± 12.29	55.93 ± 5.04
COD	mg/l	12	7615 ± 2990	8060 ± 2950	5461 ± 1634
TOC	mg/l	12	2428 ± 878	2410 ± 720	2253 ± 780
TN	mg/l	12	1455 ± 220	1495 ± 244	1382 ± 435
NH₄ ⁺/NH₃-N	mg/l	4	1090 ± 121	1111 ± 137	1002 ± 59
pH	–	9	7.58 ± 0.17	7.7	7.1 ± 0.3

ISSN: 2192-0567