Repositorio
Institucional

Jeison, David

Hemmelmann, Alberto

Torres, Alvaro

Vergara, Christian

Azocar, Laura

Application of anaerobic membrane bioreactors for the treatment of protein-containing wastewaters under saline conditions

WILEY-BLACKWELL

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

en

BACKGROUND: Anaerobic treatment of saline wastewaters may be hindered by problems related with biomass retention, since at high salt concentrations formation of biofilms and granules may not proceed well. This research studied the use of anaerobic membrane bioreactors (AnMBR) as a way to promote complete biomass retention. A lab scale AnMBR fitted with a ceramic tubular membrane was operated for 2 years. RESULTS: Results showed that enhanced biomass retention produces conditions enabling anaerobic treatment of saline wastewaters. Despite the high resulting sludge retention time, no accumulation of a high proportion of dead cells was observed. Protein degradation and not methanogenesis was shown to be the rate limiting step for organic matter degradation, a fact that is relevant for protein-containing wastewaters such as those from seafood processing industries. Only low levels of flux could be applied, in the region of 5 L m2 h1 due to reversible cake formation promoted by single cell growth. CONCLUSION: Biomass retention provided by membrane filtration promotes conditions suitable for efficient treatment of saline wastewaters. However, operation may be restricted to low values of flux due to biomass development as single cells. (c) 2012 Society of Chemical Industry

Artículo original

The authors want to acknowledge the financial support provided by CONICYT-Chile through FONDECYT projects 1080279 and 3120171. The authors would also like to thank Bram Versprille from Biothane Systems International for providing the sludge used as inoculum for the AnMBR.

Los autores desean agradecer el apoyo financiero brindado por CONICYT-Chile a través de los proyectos FONDECYT 1080279 y 3120171. Asimismo, agradecen a Bram Versprille de Biothane Systems International por proporcionar el lodo utilizado como inóculo para el AnMBR.

10.1002/jctb.3882

pdf

anaerobic

salinity

membrane

biogas

bioreactor

WASTE-WATER

ACIDIFIED WASTEWATERS

SLUDGE

BIOMASS

FLUX

anaeróbico

salinidad

membrana

biogás

biorreactor

AGUAS RESIDUALES

AGUAS RESIDUALES ACIDIFICADAS

LODOS

BIOMASA

FLUJO

anaerobic

salinity

membrane

biogas

bioreactor

WASTE-WATER

ACIDIFIED WASTEWATERS

SLUDGE

BIOMASS

FLUX

anaeróbico

salinidad

membrana

biogás

biorreactor

AGUAS RESIDUALES

AGUAS RESIDUALES ACIDIFICADAS

LODOS

BIOMASA

FLUJO

Biotecnología Ambiental

Tecnología de Bioprocesamiento, Biocatálisis y Fermentación

Ingeniería Ambiental y Geológica

Application of anaerobic membrane bioreactors for the treatment of protein-containing wastewaters under saline conditions

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

hibrida

verde

metadata

metadata

en

Artículo original

versión publicada

ANID CONICYT FONDECYT 1080279#ANID CONICYT FONDECYT 3120171

ANID CONICYT FONDECYT 1080279

ANID CONICYT FONDECYT 3120171

WILEY-BLACKWELL

0268-2575

658

663

Biotecnología y Microbiología Aplicada

Química Multidisciplinaria

Ingeniería Ambiental

Ingeniería Química

Biotechnology & Applied Microbiology

Chemistry, Multidisciplinary

Engineering, Environmental

Engineering, Chemical

pdf

WOS:000316627600019