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Monitoring and control of an anaerobic upflow fixed-bed reactor for high-loading-rate operation and rejection of disturbances

Liu, Jing LU ; Olsson, Gustaf LU and Mattiasson, Bo LU (2004) In Biotechnology and Bioengineering 87(1). p.43-53
Abstract
A new control strategy has been introduced for operating anaerobic digestion processes efficiently at high load. The control system includes a cascade controller embedded into a rule-based supervisory system based on extremum-seeking control. Three process parameters, considered to be the most realistic variables for monitoring of the bioprocess, were selected (pH, biogas production rate, and the difference between the actual biogas flow and its setpoint). The control system examines these variables and varies the organic load by manipulating the influent flow. Good control performance was achieved during the start-up, during steady-state running operations, and during rejection of disturbances. The main advantages of this control approach... (More)
A new control strategy has been introduced for operating anaerobic digestion processes efficiently at high load. The control system includes a cascade controller embedded into a rule-based supervisory system based on extremum-seeking control. Three process parameters, considered to be the most realistic variables for monitoring of the bioprocess, were selected (pH, biogas production rate, and the difference between the actual biogas flow and its setpoint). The control system examines these variables and varies the organic load by manipulating the influent flow. Good control performance was achieved during the start-up, during steady-state running operations, and during rejection of disturbances. The main advantages of this control approach can be attributed to its ability to adjust control parameters automatically, both for high-load operation and for rejection of disturbances. Furthermore, the influent flow can be tuned automatically according to variations in organic matter in the feed without the characteristics of the influent being considered. (C) 2004 Wiley Periodicals, Inc. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Biotechnology and Bioengineering
volume
87
issue
1
pages
43 - 53
publisher
John Wiley & Sons
external identifiers
  • wos:000222217700006
  • pmid:15211487
  • scopus:3042775740
ISSN
1097-0290
DOI
10.1002/bit.20088
language
English
LU publication?
yes
id
f2c707d4-0ac8-4378-a5a4-09bc98159a07 (old id 140647)
date added to LUP
2007-07-02 13:09:26
date last changed
2017-10-01 03:49:19
@article{f2c707d4-0ac8-4378-a5a4-09bc98159a07,
  abstract     = {A new control strategy has been introduced for operating anaerobic digestion processes efficiently at high load. The control system includes a cascade controller embedded into a rule-based supervisory system based on extremum-seeking control. Three process parameters, considered to be the most realistic variables for monitoring of the bioprocess, were selected (pH, biogas production rate, and the difference between the actual biogas flow and its setpoint). The control system examines these variables and varies the organic load by manipulating the influent flow. Good control performance was achieved during the start-up, during steady-state running operations, and during rejection of disturbances. The main advantages of this control approach can be attributed to its ability to adjust control parameters automatically, both for high-load operation and for rejection of disturbances. Furthermore, the influent flow can be tuned automatically according to variations in organic matter in the feed without the characteristics of the influent being considered. (C) 2004 Wiley Periodicals, Inc.},
  author       = {Liu, Jing and Olsson, Gustaf and Mattiasson, Bo},
  issn         = {1097-0290},
  language     = {eng},
  number       = {1},
  pages        = {43--53},
  publisher    = {John Wiley & Sons},
  series       = {Biotechnology and Bioengineering},
  title        = {Monitoring and control of an anaerobic upflow fixed-bed reactor for high-loading-rate operation and rejection of disturbances},
  url          = {http://dx.doi.org/10.1002/bit.20088},
  volume       = {87},
  year         = {2004},
}