Anaerobic Codigestion of Tuber Waste and Fruit Waste: Synergy and Enhanced Biogas Production

Table 2

Characterization of tuber waste, fruit waste, and inoculum used in this study.

Parameters	TW	FrW	Inoculum
Moisture content (%)	72.0 ± 0.2	78.3 ± 0.20	86.2 ± 0.15
Total solid (%)	28.0 ± 0.2	21.7 ± 0.20	13.8 ± 0.50
Volatile solid (%)	92.0 ± 0.17	94.0 ± 1.90	63.4 ± 0.20
Ash content (%)	08.0 ± 0.17	06.0 ± 1.90	36.6 ± 0.35
pH	6.70 ± 0.20	6.9 ± 0.06	7.4 ± 0.06
Chemical oxygen demand (mg/L)	694.0 ± 1.0	2120 ± 2.52	7840 ± 1.53
Biological oxygen demand (mg/L)	408.0 ± 1.15	1134 ± 5.29	4013 ± 9.17
Biodegradability index (BOD/COD)	0.6	0.5	0.5
NO3 (mg/L)	47.4 ± 0.40	140.7 ± 0.20	20.3 ± 0.3
Total dissolved solids g/L	39.9 ± 0.15	32.5 ± 0.40	3105 ± 1.53
Electrical conductivity (Ms/cm)	53.5 ± 2.0	51.5 ± 0.35	6243 ± 3.51