Monitoring of seven industrial anaerobic digesters supplied with biochar.

ABSTRACT:

Background

Recent research articles indicate that direct interspecies electron transfer (DIET) is an alternative metabolic route for methanogenic archaea that improves microbial methane productivity. It has been shown that multiple conductive materials such as biochar can be supplemented to anaerobic digesters to increase the rate of DIET. However, the industrial applicability, as well as the impact of such supplements on taxonomic profiles, has not been sufficiently assessed to date.

Results

Seven industrial biogas plants were upgraded with a shock charge of 1.8 kg biochar per ton of reactor content and then 1.8 kg per ton were added to the substrate for one year. A joint analysis for all seven systems showed a decreasing trend for the concentration of acetic acid (p < 0.00

SUBMITTER: Heitkamp K 

PROVIDER: S-EPMC8451101 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature