Molecular weight distribution of the recalcitrant organic matter contained in kraft mill effluents and the identification of microbial consortia responsible for an anaerobic biodegradable fraction.

Gómez, Gloria; Salinas, Miguel; Ruiz-Tagle, Nathaly; Sossa, Katherine; Vidal, Gladys

Gómez, Gloria; Salinas, Miguel; Ruiz-Tagle, Nathaly; Sossa, Katherine; Vidal, Gladys.

Afiliación

Gómez G; Engineering and Biotechnology Environmental Group, Environmental Science Faculty & Center EULA-Chile, University of Concepción, Concepción, Chile.
Salinas M; Area Servicios Nueva Aldea, Wood Pulp & Energy, Celulosa Arauco y Constitución S.A, Nueva Aldea, Chile.
Ruiz-Tagle N; Biofilm Laboratory and Environmental Microbiology, Biotechnology Center, University of Concepción, Concepción, Chile.
Sossa K; Biofilm Laboratory and Environmental Microbiology, Biotechnology Center, University of Concepción, Concepción, Chile.
Vidal G; Engineering and Biotechnology Environmental Group, Environmental Science Faculty & Center EULA-Chile, University of Concepción, Concepción, Chile.

J Environ Sci Health A Tox Hazard Subst Environ Eng ; 55(3): 281-291, 2020.

Article en En | MEDLINE | ID: mdl-31698987

RESUMEN

The objective of this research was to evaluate the distribution of the molecular weights of the recalcitrant organic matter contained in kraft mill effluents and identify microbial consortia responsible for an anaerobic biodegradable fraction. As a result, the average removal efficiencies of chemical organic demand (COD) and biological oxygen demand (BOD5) during the entire period of operation were 28% and 53%, respectively. The non-biodegradable organic matter was detected at molecular weights less than 1000 Da. However, most of the organic matter was in the molecular weight fraction higher than 10000 Da with 32 ± 11.6% COD as well as color (42.3 ± 8.7%), total phenolic compounds (35.9 ± 7.9%) and adsorbable organic compounds (AOX) (13.0 ± 2.7%). Methanogenic acetoclastic archaea of the genera Methanomethylovorans and Methanosarcina were found in the surface and middle zones of the reactor. Moreover, Methanosaeta and Methanolinea were identified in the low zone of the reactor. In all zones of the reactor, Desulfomicrobium and Desulfovibrio were found to be the most dominant genera of sulfate-reducing bacteria (SRB).

Asunto(s)

Residuos Industriales/análisis; Consorcios Microbianos; Compuestos Orgánicos/química; Compuestos Orgánicos/metabolismo; Papel; Anaerobiosis; Archaea/clasificación; Archaea/genética; Archaea/aislamiento & purificación; Archaea/metabolismo; Bacterias/clasificación; Bacterias/genética; Bacterias/aislamiento & purificación; Bacterias/metabolismo; Análisis de la Demanda Biológica de Oxígeno; Reactores Biológicos; Consorcios Microbianos/genética; Peso Molecular; Eliminación de Residuos Líquidos

Palabras clave

Pulp and paper mill; UASB reactor; archaea; molecular weight distribution; sulfate-reducing bacteria

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos Orgánicos / Papel / Consorcios Microbianos / Residuos Industriales Tipo de estudio: Diagnostic_studies Idioma: En Revista: J Environ Sci Health A Tox Hazard Subst Environ Eng Asunto de la revista: TOXICOLOGIA Año: 2020 Tipo del documento: Article País de afiliación: Chile Pais de publicación: Reino Unido

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