Table 1.

Effect of peptone concentration on 4-CP removal by ALR

Time (day)	Influent concentration (mg/L)	HRT ± 1 (h)	Loading rate (mg/L/day)	Peptone (mg/L)	Biodegradation (%)	Volumetric removal rate (mg/L/h)
1–2	20	40	12	1	99	0.495
3–8	40	40	24	1	82	0.82
9–14	40	30	32	1	56.5	0.753
15–24	40	30	32	0.5	75.8	1.01
29–31	40	48	20	0.2	100	0.84
42–43	200	48	100	0.2	100	4.17
44	250	48	125	0.2	99	5.2