Table 2.

Organic loading rate of lab-scale batch anaerobic treatments combination.

Khat waste (KW)				Cow dung (CD)
Treatments Designation	Ratio of KW to CD	Avg. KW in (g)	Vol. of water used to mix with 3 % of KOH (6 times TS) of KW in ml	Weight of Fresh CD in (g)	Weight of Dried CD in (g)	CD TS needed water (6 times TS) of CD in ml	Vol. of water in Fresh CD ml	Added water for CD ml	Total Vol. of water mixed with 3 % of KOH (6 times TS) in ml
T - 1	1:0	50	–	247	50	300	197	103	103
T- 2	1:1	25	150	123.9	25	150	98.88	51.12	201.12
T - 3	1:2	16.7	99.96	165.2	33.3	200.04	131.84	68.2	168.16
T - 4	1:3	12.5	75	185.5	37.5	225	148.32	76.68	151.68
T - 5	2:1	33.3	199.92	82.6	16.7	100.08	65.92	34.16	234.08
T - 6	3:1	37.5	225	61.94	12.5	75	49.44	25.56	250.56
T - 7	0:1	–	–	247.8	50	300	197.78	102.22	102.22