Multicriteria Decision Model and Thermal Pretreatment of Hotel Food Waste for Robust Output to Biogas: Case Study from City of Jaipur, India

Table 5

Decision matrix as per experimental results of thermal pretreatment of FW.

Alternatives	pH (C1)	VS reduction () (C2)	sCOD; (g/L) (C3)	Soluble protein (g/L) (C4)	Biogas yield (mL/g VS) (C5)
60°C, 10 minutes (A1)	5.69	17.09	83.85	21.6	575.66
60°C, 20 minutes (A2)	5.29	16.87	88.62	21.8	645.73
80°C, 10 minutes (A3)	5.66	16.66	91.36	22.6	653.24
80°C, 20 minutes (A4)	5.19	16.49	92.45	22.9	692.68
100°C, 10 minutes (A5)	5.58	16.26	101.56	23.3	783.23
100°C, 20 minutes (A6)	4.96	16.09	100.12	23.7	728.48
Sum	32.37	99.46	557.96	135.9	4079.02
Max	5.69	17.09	101.56	23.7	783.23
Min	4.96	16.09	83.85	21.6	575.66
Max–min	0.73	1	17.71	2.1	207.57