A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems

A simple technique to determine biomass concentration as chemical oxygen demand (COD) was developed as an alternative to the standard volatile suspended solid (VSS) method. The proposed technique for biomass measurement as COD is based on the determination of the biomass COD (CODB) as the difference...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Contreras, Edgardo Martín, Bértola, Nora Cristina, Giannuzzi, Leda, Zaritzky, Noemí Elisabet
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Química
biomass
chemical oxygen demand
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83419
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83419
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
biomass
chemical oxygen demand
spellingShingle Química
biomass
chemical oxygen demand
Contreras, Edgardo Martín
Bértola, Nora Cristina
Giannuzzi, Leda
Zaritzky, Noemí Elisabet
A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems
topic_facet Química
biomass
chemical oxygen demand
description A simple technique to determine biomass concentration as chemical oxygen demand (COD) was developed as an alternative to the standard volatile suspended solid (VSS) method. The proposed technique for biomass measurement as COD is based on the determination of the biomass COD (CODB) as the difference between total COD (CODT) and the soluble COD (CODS) of the sample. The obtained results show that this technique was quicker and simpler than the traditional VSS method. The validity of the proposed methods was tested with pure cultures of a filamentous micro-organisms (Sphaerotilus natans), a floc-forming bacteria and activated sludges. The method was also used for estimating the conversion factor (fCV) from VSS to COD units. A modification of the standard VSS technique was also proposed using two membranes in the filtration device; this technique allowed the biomass determination in 1 μm size bacteria cultures that cannot be detected by the standard VSS method because cells are not retained by the 1.5 μm diameter pore glass-fibre filter.
format Articulo
Articulo
author Contreras, Edgardo Martín
Bértola, Nora Cristina
Giannuzzi, Leda
Zaritzky, Noemí Elisabet
author_facet Contreras, Edgardo Martín
Bértola, Nora Cristina
Giannuzzi, Leda
Zaritzky, Noemí Elisabet
author_sort Contreras, Edgardo Martín
title A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems
title_short A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems
title_full A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems
title_fullStr A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems
title_full_unstemmed A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems
title_sort modified method to determine biomass concentration as cod in pure cultures and in activated sludge systems
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/83419
work_keys_str_mv AT contrerasedgardomartin amodifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
AT bertolanoracristina amodifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
AT giannuzzileda amodifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
AT zaritzkynoemielisabet amodifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
AT contrerasedgardomartin modifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
AT bertolanoracristina modifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
AT giannuzzileda modifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
AT zaritzkynoemielisabet modifiedmethodtodeterminebiomassconcentrationascodinpureculturesandinactivatedsludgesystems
bdutipo_str Repositorios
_version_ 1764820488593342464

Ejemplares similares