Title
System identification of the fermentation system of Thermoanaerobacter sp. X514
Abstract
Bioethanol production by means of anaerobic thermophilic microorganisms with pentose or hexose as the substrate are of paramount importance in sustainable fuel innovation. Manipulation of microorganisms and the associated experiment conditions by means of various ad-hoc technology is obviously the most straightforward way with the aim of maximizing bioethanol yield. However, methodology by means of mathematical modeling and analysis is often neglected among these routines. In this paper, typical input-output models are applied in the metabolic system analysis of Thermoanaerobacter sp. X514 under sole glucose substrate, sole xylose substrate and mixed glucose and xylose substrates conditions. Orthogonal Least Squares (OLS) approach is used for model parameter estimation. Model selection is proposed in order to testify the generality of the suggested model. System identification results illustrate that various forms of Nonlinear AutoRegressive with eXogenous input models (NARX) are applicable in delineating the system where different substrates (glucose or xylose) are utilized during the experiments. The proposed model structure infers that the yields of various products in X514 are mainly driven by the history information of the substrate consumption change. Moreover, the interaction between the main fermentation products of X514 is indirectly connected through the proposed models.
Year
DOI
Venue
2012
10.1109/ISB.2012.6314129
ISB
Keywords
Field
DocType
autoregressive processes,biofuel,biotechnology,fermentation,least squares approximations,parameter estimation,narx,ols approach,x514,ad-hoc technology,anaerobic thermophilic microorganisms,bioethanol production,fermentation system,hexose,input-output models,metabolic system analysis,mixed glucose,model parameter estimation,model selection,nonlinear autoregressive with exogenous input models,orthogonal least squares approach,pentose,sole glucose substrate,sole xylose substrate,substrate consumption change,sustainable fuel innovation,system identification,thermoanaerobacter sp x514,xylose substrates conditions,thermoanaerobacter sp.,bioethanol,model estimation
Substrate (chemistry),Autoregressive model,Xylose,Nonlinear autoregressive exogenous model,Control theory,Biochemical engineering,Computer science,Biotechnology,Model selection,Pentose,Fermentation,System identification
Conference
ISBN
Citations 
PageRank 
978-1-4673-4397-8
0
0.34
References 
Authors
4
5
Name
Order
Citations
PageRank
Jing Yang14111.98
xiaofang ling200.34
lishan yao300.34
Hua-liang Wei449444.82
Visakan Kadirkamanathan543162.00