Microbial insights of enhanced anaerobic conversion of syngas into volatile fatty acids by co-fermentation with carbohydrate-rich synthetic wastewater.

ABSTRACT:

Background

The co-fermentation of syngas (mainly CO, H₂ and CO₂) and different concentrations of carbohydrate/protein synthetic wastewater to produce volatile fatty acids (VFAs) was conducted in the present study.

Results

It was found that co-fermentation of syngas with carbohydrate-rich synthetic wastewater could enhance the conversion efficiency of syngas and the most efficient conversion of syngas was obtained by co-fermentation of syngas with 5 g/L glucose, which resulted in 25% and 43% increased conversion efficiencies of CO and H₂, compared to syngas alone. The protein-rich synthetic wastewater as co-substrate, however, had inhibition on syngas conversion due to the presence of high concentration of NH₄ ⁺-N (> 900 

SUBMITTER: Liu C 

PROVIDER: S-EPMC7076986 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature