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Online identification and control of pH in a neutralization system
Date
2008-07-02
Author
Obut, Salih
Özgen, Canan
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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pH control of a neutralization system for wastewater, where the input waste stream has variable properties in terms of acid concentration and flow rate, is investigated with different control algorithms utilizing an online identification technique. Performances of the designed controllers (model predictive (MPC), fuzzy logic (FLC), and conventional PI controller) are tested and compared mainly for disturbance rejection, set-point tracking, and robustness issues theoretically and experimentally on a laboratory-scale pH neutralization system. Additional experiments are done with original wastewater samples taken from an electronic-circuits manufacturing plant. All controllers' performances are found to be close, while adaptive MPC can be considered better compared to others due its constraint handling capabilities and FLC can be preferred because it can be used without an identification step.
Subject Keywords
Reactor
,
Fuzzy-Logic
,
Nonlinear Control
,
Strong Acid Equivalent
,
Model-Predictive Control
URI
https://hdl.handle.net/11511/32150
Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
DOI
https://doi.org/10.1021/ie070492p
Collections
Graduate School of Natural and Applied Sciences, Article
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S. Obut and C. Özgen, “Online identification and control of pH in a neutralization system,”
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
, pp. 4394–4404, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32150.