Wood biochar enhances methanogenesis in the anaerobic digestion of chicken manure under ammonia inhibition conditions.

ABSTRACT: The process of breaking down chicken manure through anaerobic digestion is an effective waste management technology. However, chicken manure can be a challenging feedstock, causing ammonia stress and digester instability. This study examined the impacts of adding wood biochar and acid-alkali-treated wood biochar to anaerobically digest chicken manure under conditions of ammonia inhibition. The results highlighted that only the addition of 5 % acid-alkali-treated wood biochar by volume can achieve cumulative methane production close to the typical methane potential range of chicken manure. The treated wood biochar also exhibited highest total ammonia nitrogen removal compared to the Control treatment. Scanning Electron Microscope revealed growing interactions between biochar and methanogens

SUBMITTER: Ngo T 

PROVIDER: S-EPMC10618790 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature