The biology of methanogenic bacteria.

Molecular basis for the biodegradative recalcitrance of lignin in anaerobic environments

“…In the same laboratory, B. Schink (personal communication) has succeeded in isolating acidogenic bacteria that grow via fermentation of simple aromatic substrates. However, our work has shown that methoxyllabeled [14C]lignins were not decomposed to 14CH4 or 14CO 2 in Lake Mendota sediments which contain active populations of sulfidogenic, methanogenic and acidogenic bacteria including A. woodii [20,36,37]. Thus, at present, only two routes of methanol generation are known in anaerobic ecosystems; namely, demethoxylation of soluble aromatics [35] and hydrolysis of pectin methyl esters [38].…”

Biodegradation of phosphonate toxicants yields methane or ethane on cleavage of the C-P bond

“…Methanogenesis is generally considered as a process of strictly anaerobic bacteria, with the carbon usually coming from CO2 but sometimes from the methyl group of acetate [8]. The present study shows that methane can be derived from the cleavage of the C-P bond by an aerobic bacterium.…”

Three‐chamber Bioelectrochemical System for Biogas Upgrading and Nutrient Recovery

“…The anode was operated in continuous-flow mode by using a peristaltic pump at a flow rate of 1.57 L d -1 , corresponding to a hydraulic retention time (HRT) of 13 h. The anolyte contained a mineral medium and a mixture of organic compounds to simulate the soluble COD fraction of a municipal wastewater (g L -1 ): peptone (0.138), yeast extract (0.075), sodium acetate (0.088), glucose (0.34); NH 4 Cl (0.125); MgCl 2 6H 2 O (0.1); K 2 HPO 4 (4); CaCl 2 2H 2 O, (0.05); 10 mL L -1 of a trace metal solution, and 1 mL L -1 of a vitamin solution [24].…”