Anaerobic digestion is an established method for stabilizing sewage sludge and producing biogas, but there's limited knowledge about the microbial changes during the initial start-up phase of digesters.
This study examined the bacterial and archaeal populations in a full-scale mesophilic digester from start-up to steady-state using high-throughput DNA sequencing, revealing a predominance of fermentative bacteria and specific methanogens that adapted over time.
The research highlighted which microbial communities are most affected by changes from aerobic to anaerobic conditions and assessed the core microbial populations influenced by the wastewater treatment plant's operational parameters.
The self-purification ability of a resurgence stream has been investigated by taking samples along the course of a channeled tract made up of a first part in beaten soil (3.3 km) and a second in concrete (7.2 km).