In situ carbon dioxide capture to co-produce 1,3-propanediol, biohydrogen and micro-nano calcium carbonate from crude glycerol by Clostridium butyricum

Table 1 Production of some industrial biochemicals by microbial fermentation in major relevant countries and induced CO₂ production in the fermentation

Biochemicals	Production capacity (tons/a year)	Major production Country	induced CO₂ production (tons/a year)	References
Bioethanol	88 million	USA, Brazil &China	84.2 million	[6, 7]
1,3-Propanediol	63,000	USA	118,030	[7, 8]
1,4-Butanediol	105,000	USA, Germany & Italy	13,310	[7, 9]
Butanol	21,460	China	25,480	[10, 11]

ISSN: 2731-3654