Patent ID: 11920176
Assignee: SOUTH CHINA AGRICULTURAL UNIVERSITY
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A method for producing biogas from a waste liquid/residue after diosgenin extraction by aluminum chloride, comprising:
adding an anaerobic sludge and a waste residue from diosgenin extraction by aluminum chloride with an organic loading having a volatile solids ratio of (1-3):(1-2) or adding a seeding sludge and a diosgenin waste liquid with an organic loading having a VS:COD ratio of (1-2):(1-2) in a fermentation vessel, wherein the VS is the volatile solid of the seeding sludge, and the COD is a chemical oxygen demand of the diosgenin waste liquid; and
subjecting the above components to fermentation at 35° C.-37° C. for 5-25 days to produce biogas,
wherein the fermentation is performed with stirring for 1-2 min at intervals of 5-6 min.