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Monitoring of anaerobic digestion processes: A review perspective

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  • Madsen, Michael
  • Holm-Nielsen, Jens Bo
  • Esbensen, Kim H.
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    Abstract

    The versatility of anaerobic digestion (AD) as an effective technology for solving central challenges met in applied biotechnological industry and society has been documented in numerous publications over the past many decades. Reduction of sludge volume generated from wastewater treatment processes, sanitation of industrial organic waste, and benefits from degassing of manure are a few of the most important applications. Especially, renewable energy production, integrated biorefining concepts, and advanced waste handling are delineated as the major market players for AD that likely will expand rapidly in the near future. The complex, biologically mediated AD events are far from being understood in detail however. Despite decade-long serious academic and industrial research efforts, only a few general rules have been formulated with respect to assessing the state of the process from chemical measurements. Conservative reactor designs have dampened the motivation for employing new technologies, which also constitutes one of the main barriers for successful upgrade of the AD sector with modern process monitoring instrumentation. Recent advances in Process Analytical Technologies (PAT) allow complex bioconversion processes to be monitored and deciphered using e.g. spectroscopic and electrochemical measurement principles. In combination with chemometric multivariate data analysis these emerging process monitoring modalities carry the potential to bring AD process monitoring and control to a new level of reliability and effectiveness. It is shown, how proper involvement of process sampling understanding, Theory of Sampling (TOS), constitutes a critical success factor. We survey the more recent trends within the field of AD monitoring and the powerful PAT/TOS/chemometrics application potential is highlighted. The Danish co-digestion concept, which integrates utilisation of agricultural manure, biomass and industrial organic waste, is used as a case study. We present a first foray for the next research and development perspectives and directions for the AD bioconversion sector.

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    Bibliographic Info

    Article provided by Elsevier in its journal Renewable and Sustainable Energy Reviews.

    Volume (Year): 15 (2011)
    Issue (Month): 6 (August)
    Pages: 3141-3155

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    Handle: RePEc:eee:rensus:v:15:y:2011:i:6:p:3141-3155

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    Keywords: Anaerobic digestion (AD) Process monitoring Process Analytical Technologies (PAT) Process sampling Theory of Sampling (TOS);

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    1. Raven, R.P.J.M. & Gregersen, K.H., 2007. "Biogas plants in Denmark: successes and setbacks," Renewable and Sustainable Energy Reviews, Elsevier, vol. 11(1), pages 116-132, January.
    2. Mæng, H. & Lund, H. & Hvelplund, F., 1999. "Biogas plants in Denmark: technological and economic developments," Applied Energy, Elsevier, vol. 64(1-4), pages 195-206, September.
    3. Lipp, Judith, 2007. "Lessons for effective renewable electricity policy from Denmark, Germany and the United Kingdom," Energy Policy, Elsevier, vol. 35(11), pages 5481-5495, November.
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    Cited by:
    1. Chen, Yuling & Rößler, Benjamin & Zielonka, Simon & Lemmer, Andreas & Wonneberger, Anna-Maria & Jungbluth, Thomas, 2014. "The pressure effects on two-phase anaerobic digestion," Applied Energy, Elsevier, vol. 116(C), pages 409-415.
    2. Singh, Bhaskar & Guldhe, Abhishek & Rawat, Ismail & Bux, Faizal, 2014. "Towards a sustainable approach for development of biodiesel from plant and microalgae," Renewable and Sustainable Energy Reviews, Elsevier, vol. 29(C), pages 216-245.

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