Fault Diagnosis of Anaerobic Digester System Using Nonlinear State Estimator: Application to India’s Largest Dairy Unit

  • Mallavarappu Deepika Rani
  • Laya Das
  • Babji Srinivasan
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 4)


The complex biochemical processes along with uncertain load disturbances in anaerobic digesters (AD) lead to frequent upsets and poor performance of the overall system. Several techniques have been proposed in the literature to address fault detection and isolation in the anaerobic digester. However, these methods do not provide information about the internal states of the system and use expert and heuristics for fault isolation. In this work, we first developed a first principle based model of the AD unit at one of India’s largest dairy and validated using experimental results. Subsequently, we used this model to demonstrate the applicability of nonlinear state estimation approaches for fault diagnosis.


Anaerobic digestion State estimation Fault diagnosis 



The authors gratefully thank the leadership and technical team at Amul Diary, Anand for their strong support throughout the project.


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Mallavarappu Deepika Rani
    • 1
  • Laya Das
    • 2
  • Babji Srinivasan
    • 1
  1. 1.Department of Chemical EngineeringIndian Institute of Technology GandhinagarGandhinagarIndia
  2. 2.Department of Electrical EngineeringIndian Institute of Technology GandhinagarGandhinagarIndia

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