title: Growth of methylaminotrophic, acetotrophic and hydrogenotrophic methanogenic bacteria on artificial supports.
abstract: The efficiency of organic matter degradation in attached biomass reactors depends on the suitable selection of artificial support for the retention of bacterial communities. We have studied the growth on glass and clay beads of methylaminotrophic, acetotrophic and hydrogenotrophic methanogenic bacterial communities isolated from anaerobic reactors. Bacterial counts were performed by the standard MPN technique. Experiments were performed in 50 ml vials for 12 days at 35 degrees C. Increase in the counts of methylaminotrophic and hydrogenotrophic methanogens occurred on both glass and clay beads. The latter support material also stimulated the growth rate of methylaminotrophic methanogens.
authors.affiliation: Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Chile. hurrutia@buho.dpi.udec.cl
authors.forename: H
authors.initials: H
authors.lastname: Urrutia
authors.forename: R
authors.initials: R
authors.lastname: Vidal
authors.forename: M
authors.initials: M
authors.lastname: Baeza
authors.forename: J E
authors.initials: JE
authors.lastname: Reyes
authors.forename: E
authors.initials: E
authors.lastname: Aspe
mesh_terms: D000538:Aluminum Silicates; D000693:Anaerobiosis; D001431:Bacteriological Techniques / Q000295:instrumentation*; D018533:Biomass; D000077215:Clay; D019605:Euryarchaeota / Q000145:classification / Q000254:growth & development* / Q000378:metabolism; D005898:Glass; D008697:Methane / Q000378:metabolism; D008863:Microspheres; D013045:Species Specificity; D013696:Temperature
chemical_list: D000538:Aluminum Silicates; D008697:Methane; D000077215:Clay