Solid anaerobic digestion batch with liquid digestate recirculation and wet anaerobic digestion of organic waste: Comparison of system performances and identification of microbial guilds
Performances and methanogenic pathway of SADB and wet AD of organic waste were analyzed. Liquid digestate recirculation improved AD even at TS > 30%. Methane yields were SADB = 252 NLCH4/kgVS wet AD = 320 NLCH4/kgVS. Large syntrophic metabolism was detected in the liquid phase of SADB.