Brewery wastewater treatment in a fluidised bed bioreactor

Aoyi Ochieng, Tom Ogada, William Sisenda, Paul Wambua

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A hydrodynamic characteristic performance of a three phase fluidised bed bioreactor has been studied with brewery wastewater. The influence of operating parameters, such as phase hold up, phase mixing, aspect ratio and superficial gas velocity, on an aerobic biodegradation in a bioreactor of 0.16 m i.d. and 2.7 m in height, was analysed. A low-density (960 kg/m3) support particle with an internal interstice was employed. The particle and liquid loading were varied in order to determine the effect of phase hold up on bed homogeneity. The ranges in which particle loading and bed height affect fluidisation, and consequently chemical oxygen demand (COD) reduction, were determined. The distributor used in this work was designed such that fluid flow pattern similar to that of a draft tube was induced in the reactor. The low-density particles enabled cost effective operation at a relatively low gas superficial velocity (2.5 cm/s). Aspect ratio significantly influenced the overall bed homogeneity, and the optimum aspect ratio was 10, with volume of the support particles being 21% of the reactor volume.
Original languageEnglish
Pages (from-to)311-321
Number of pages11
JournalJournal of Hazardous Materials
Volume90
Issue number3
DOIs
Publication statusPublished - 2002

Fingerprint

Breweries
Bioreactors
Waste Water
Wastewater treatment
bioreactor
Aspect ratio
Gases
Biological Oxygen Demand Analysis
Hydrodynamics
Fluidization
Chemical oxygen demand
homogeneity
Biodegradation
Costs and Cost Analysis
Flow patterns
Flow of fluids
Wastewater
fluidization
gas
flow pattern

Cite this

Ochieng, Aoyi ; Ogada, Tom ; Sisenda, William ; Wambua, Paul . / Brewery wastewater treatment in a fluidised bed bioreactor. In: Journal of Hazardous Materials. 2002 ; Vol. 90, No. 3. pp. 311-321.
@article{6f66f74c4e36456d979b232c46db29ea,
title = "Brewery wastewater treatment in a fluidised bed bioreactor",
abstract = "A hydrodynamic characteristic performance of a three phase fluidised bed bioreactor has been studied with brewery wastewater. The influence of operating parameters, such as phase hold up, phase mixing, aspect ratio and superficial gas velocity, on an aerobic biodegradation in a bioreactor of 0.16 m i.d. and 2.7 m in height, was analysed. A low-density (960 kg/m3) support particle with an internal interstice was employed. The particle and liquid loading were varied in order to determine the effect of phase hold up on bed homogeneity. The ranges in which particle loading and bed height affect fluidisation, and consequently chemical oxygen demand (COD) reduction, were determined. The distributor used in this work was designed such that fluid flow pattern similar to that of a draft tube was induced in the reactor. The low-density particles enabled cost effective operation at a relatively low gas superficial velocity (2.5 cm/s). Aspect ratio significantly influenced the overall bed homogeneity, and the optimum aspect ratio was 10, with volume of the support particles being 21{\%} of the reactor volume.",
author = "Aoyi Ochieng and Tom Ogada and William Sisenda and Paul Wambua",
year = "2002",
doi = "10.1016/S0304-3894(01)00373-9",
language = "English",
volume = "90",
pages = "311--321",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",
number = "3",

}

Brewery wastewater treatment in a fluidised bed bioreactor. / Ochieng, Aoyi; Ogada, Tom; Sisenda, William; Wambua, Paul .

In: Journal of Hazardous Materials, Vol. 90, No. 3, 2002, p. 311-321.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Brewery wastewater treatment in a fluidised bed bioreactor

AU - Ochieng, Aoyi

AU - Ogada, Tom

AU - Sisenda, William

AU - Wambua, Paul

PY - 2002

Y1 - 2002

N2 - A hydrodynamic characteristic performance of a three phase fluidised bed bioreactor has been studied with brewery wastewater. The influence of operating parameters, such as phase hold up, phase mixing, aspect ratio and superficial gas velocity, on an aerobic biodegradation in a bioreactor of 0.16 m i.d. and 2.7 m in height, was analysed. A low-density (960 kg/m3) support particle with an internal interstice was employed. The particle and liquid loading were varied in order to determine the effect of phase hold up on bed homogeneity. The ranges in which particle loading and bed height affect fluidisation, and consequently chemical oxygen demand (COD) reduction, were determined. The distributor used in this work was designed such that fluid flow pattern similar to that of a draft tube was induced in the reactor. The low-density particles enabled cost effective operation at a relatively low gas superficial velocity (2.5 cm/s). Aspect ratio significantly influenced the overall bed homogeneity, and the optimum aspect ratio was 10, with volume of the support particles being 21% of the reactor volume.

AB - A hydrodynamic characteristic performance of a three phase fluidised bed bioreactor has been studied with brewery wastewater. The influence of operating parameters, such as phase hold up, phase mixing, aspect ratio and superficial gas velocity, on an aerobic biodegradation in a bioreactor of 0.16 m i.d. and 2.7 m in height, was analysed. A low-density (960 kg/m3) support particle with an internal interstice was employed. The particle and liquid loading were varied in order to determine the effect of phase hold up on bed homogeneity. The ranges in which particle loading and bed height affect fluidisation, and consequently chemical oxygen demand (COD) reduction, were determined. The distributor used in this work was designed such that fluid flow pattern similar to that of a draft tube was induced in the reactor. The low-density particles enabled cost effective operation at a relatively low gas superficial velocity (2.5 cm/s). Aspect ratio significantly influenced the overall bed homogeneity, and the optimum aspect ratio was 10, with volume of the support particles being 21% of the reactor volume.

U2 - 10.1016/S0304-3894(01)00373-9

DO - 10.1016/S0304-3894(01)00373-9

M3 - Article

VL - 90

SP - 311

EP - 321

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

IS - 3

ER -