clostridium acetireducens clostridium acetireducens clostridium acetireducens is a gram-positive, rod-shaped, anaerobic and non-motile bacterium from the genus of clostridium which has been isolated from an anaerobic bioreactor from de krim in the netherlands. clostridium acetireducens scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: clostridiaceae genus: clostridium species: c. acetireducens binomial name clostridium acetireducensörlygsson et al. 1996 type strain 30a, dsm 10703