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Immobilised activated sludge based biosensor for biochemical oxygen demand measurement

Liu, Jing LU ; Björnsson, Lovisa LU and Mattiasson, Bo LU (2000) In Biosensors & Bioelectronics 14(12). p.883-893
Abstract
A biochemical oxygen demand (BOD) sensor, based on an immobilised mixed culture of microorganisms in combination with a dissolved oxygen electrode, has been developed for the purpose of on-line monitoring of the biological treatment process for waste and wastewater. The sensor was designed for easy replacement of the biomembrane, thereby making it suitable for short-term use. The drawbacks of activated sludge based sensor, such as short sensor lifetime, were thereby circumvented. The sensor BOD measurements were carried out in the kinetic mode using a flow injection system, resulting in 25 s for one measurement followed by 4-8 min recovery time. Based on the results of normalised sensor responses, the OECD synthetic wastewater was... (More)
A biochemical oxygen demand (BOD) sensor, based on an immobilised mixed culture of microorganisms in combination with a dissolved oxygen electrode, has been developed for the purpose of on-line monitoring of the biological treatment process for waste and wastewater. The sensor was designed for easy replacement of the biomembrane, thereby making it suitable for short-term use. The drawbacks of activated sludge based sensor, such as short sensor lifetime, were thereby circumvented. The sensor BOD measurements were carried out in the kinetic mode using a flow injection system, resulting in 25 s for one measurement followed by 4-8 min recovery time. Based on the results of normalised sensor responses, the OECD synthetic wastewater was considered to be a more suitable calibration solution in comparison with the GGA solution. Good agreement was achieved between the results of the sensor BOD measurement and those obtained from BOD5 analysis of a wastewater sample from a food-processing factory. Reproducibility of responses using one sensor was below +/-5.6% standard deviation. Reproducibility of responses using different sensors was within acceptable bias limits, viz. +/-15% standard deviation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Biochemical oxygen demand, Activated sludge, Microbial consortium, Kinetic mode, Dynamic mode, Wastewater, BOD sensor
in
Biosensors & Bioelectronics
volume
14
issue
12
pages
883 - 893
publisher
Elsevier
external identifiers
  • scopus:0342980893
ISSN
1873-4235
DOI
10.1016/S0956-5663(99)00064-0
language
English
LU publication?
yes
id
5a1de145-8012-43b0-a106-d9b18d98590c (old id 817894)
date added to LUP
2008-01-04 14:58:35
date last changed
2017-04-30 13:28:04
@article{5a1de145-8012-43b0-a106-d9b18d98590c,
  abstract     = {A biochemical oxygen demand (BOD) sensor, based on an immobilised mixed culture of microorganisms in combination with a dissolved oxygen electrode, has been developed for the purpose of on-line monitoring of the biological treatment process for waste and wastewater. The sensor was designed for easy replacement of the biomembrane, thereby making it suitable for short-term use. The drawbacks of activated sludge based sensor, such as short sensor lifetime, were thereby circumvented. The sensor BOD measurements were carried out in the kinetic mode using a flow injection system, resulting in 25 s for one measurement followed by 4-8 min recovery time. Based on the results of normalised sensor responses, the OECD synthetic wastewater was considered to be a more suitable calibration solution in comparison with the GGA solution. Good agreement was achieved between the results of the sensor BOD measurement and those obtained from BOD5 analysis of a wastewater sample from a food-processing factory. Reproducibility of responses using one sensor was below +/-5.6% standard deviation. Reproducibility of responses using different sensors was within acceptable bias limits, viz. +/-15% standard deviation.},
  author       = {Liu, Jing and Björnsson, Lovisa and Mattiasson, Bo},
  issn         = {1873-4235},
  keyword      = {Biochemical oxygen demand,Activated sludge,Microbial consortium,Kinetic mode,Dynamic mode,Wastewater,BOD sensor},
  language     = {eng},
  number       = {12},
  pages        = {883--893},
  publisher    = {Elsevier},
  series       = {Biosensors & Bioelectronics},
  title        = {Immobilised activated sludge based biosensor for biochemical oxygen demand measurement},
  url          = {http://dx.doi.org/10.1016/S0956-5663(99)00064-0},
  volume       = {14},
  year         = {2000},
}