New efficient meta-fermentation process for lactic acid production from municipal solid waste

Table 1 Results of lactic acid production from previous studies using mixed cultures

Substrate	Type of operation	Temperature (ºC)	pH (-)	HRT (d)	OLR (g_COD/L·d)	Lactic acid (g_COD/L)	Refs.
Glucose	Continuous	55	5	0.5	50	23	[24]
50% cooked rice + dry dog food	Semi-continuous	35	Not controlled	15	5 g_TS/L·d	16	[22]
Food waste + sewage sludge	Batch	35	9	NA	NA	25.5	[25]
Food waste + sewage sludge	Batch	50	7	NA	NA	21	[25]
Food waste	Batch	37	5	NA	NA	20.7–28.4	[17]

ISSN: 1475-2859