▎ 摘　　要

NOVELTY - Method for improving methane production efficiency in anaerobic digestion process involves providing a carbon nanomaterial having conductivity to increase the electron transfer rate between acid-producing microorganisms and methanogenic microorganisms in an anaerobic reactor. USE - The method is useful for improving methane production efficiency in anaerobic digestion process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for conductive carbon nanotube structure, which comprises carbon nanomaterial having conductivity to increase the electron transfer rate mentioned above.