Anaerobic Co-Digestion of Human Feces with Rice Straw for Biogas Production: A Case Study in Sunyani

Table 3

Difference in the potential of biogas yield from different combinations of HF and RS.

Different combination	Mean difference (ml/day)	Std. deviation	-value	95% confidence interval of the difference
				Lower	Upper
HF/RS 100 : 0	306.40	113.422	14.796	264.05	348.75
HF/RS 90 : 10	272.03	104.191	14.301	233.13	310.94
HF/RS 80 : 20	210.80	57.064	20.233	189.49	232.11
HF/RS 70 : 30	194.50	77.121	13.814	165.70	223.30
HF/RS 60 : 40	262.40	80.691	17.811	232.27	292.53
HF/RS 50 : 50	349.23	93.212	20.521	314.43	384.04
HF/RS 40 : 60	268.00	94.120	15.596	232.86	303.14
HF/RS 30 : 70	219.63	71.200	16.896	193.05	246.22
HF/RS 20 : 80	153.13	55.152	15.208	132.54	173.73
HF/RS 10 : 90	119.20	126.997	5.141	71.78	166.62
HF/RS 0 : 100	128.27	72.288	9.719	101.27	155.26