Resumen de Rhodobacter and pigments in anaerobic digestion of brewery effluent
A. Neves, L. Ramalho, I.P. Marques, A. Eusebio Baldrés
Brewery wastewater (BWW) was digested anaerobically in mesophilic conditions and batch mode. The presence of a reddish pigmentation associated to the better removal capacity of the BWW digestion (64%), indicates that the treatment and energetic valorisation of an organic effluent can occur at the same time and inside the same unit as the production of a photosynthetic pigment. The reddish pigmentation found in this experiment was mainly attributed to bacteriochlorophyll a, and to carotenoids pigments of the spirilloxantin series (characteristics of purple non-sulfur bacteria). Microbial identification through Next-generation sequencing of 16S rRNA genes showed the presence of bacterial genus Rhodobacter in the inoculum and in anaerobic digestion of BWW.
