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Non-specific conducting polymer-based array capable of monitoring odour emissions from a biofiltration system in a piggery building

Sohn, J.H. and Dunlop, M. and Hudson, N. and Il Kim, T. and Yoo, Y.H. (2009) Non-specific conducting polymer-based array capable of monitoring odour emissions from a biofiltration system in a piggery building. Sensors and Actuators B-Chemical, 135 (2). pp. 455-464.

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Article Link(s): http://dx.doi.org/10.1016/j.snb.2008.10.007

Publisher URL: http://www.elsevier.com

Abstract

A commercial non-specific gas sensor array system was evaluated in terms of its capability to monitor the odour abatement performance of a biofiltration system developed for treating emissions from a commercial piggery building. The biofiltration system was a modular system comprising an inlet ducting system, humidifier and closed-bed biofilter. It also included a gravimetric moisture monitoring and water application system for precise control of moisture content of an organic woodchip medium. Principal component analysis (PCA) of the sensor array measurements indicated that the biofilter outlet air was significantly different to both inlet air of the system and post-humidifier air. Data pre-processing techniques including normalising and outlier handling were applied to improve the odour discrimination performance of the non-specific gas sensor array. To develop an odour quantification model using the sensor array responses of the non-specific sensor array, PCA regression, artificial neural network (ANN) and partial least squares (PLS) modelling techniques were applied. The correlation coefficient (r(2)) values of the PCA, ANN, and PLS models were 0.44, 0.62 and 0.79, respectively.

Item Type:Article
Corporate Creators:Animal Science
Additional Information:© Crown Copyright.
Keywords:Biofilter; odour; sensor array; electronic nose; artificial neural network; chemometrics.
Subjects:Science > Science (General)
Technology > Technology (General)
Animal culture > Swine
Deposited On:14 Apr 2009 06:50
Last Modified:20 Apr 2011 22:59

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