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Various Sludge Pretreatments: Their Impact on Biogas Generation

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Waste Biomass Management – A Holistic Approach

Abstract

Biogas produced through anaerobic degradation of waste activated sludge (WAS) in wastewater treatment plants has gained much more attention as it is a renewable energy resource. An apparent advantage of anaerobic digestion is the generation of biogas that presents a renewable substitute for utilization of fossil fuels. It was observed that pretreatment has to be done prior to anaerobic degradation (AD) to enhance the biogas generation. This review deals with various pretreatments—chemical, physical, mechanical, combinative, phase-separated pretreatment, their mode of action, advantages and their impact on biogas generation. An extensive review of these pretreatment techniques could plausibly aid in increasing the biogas production and thus rises the sustainable energy generation.

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Acknowledgement

The authors are thankful to the Department of Science and Technology, India, for providing financial support for this project (SR/FTP/ETA-0021/2010) under their Young Scientist Scheme.

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  1. Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, 627007, Tamil Nadu, India

    J. Rajesh Banu & S. Kavitha

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  1. J. Rajesh Banu
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Correspondence to J. Rajesh Banu .

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  1. Faculty of Engineering Technology, Universiti Malaysia Pahang (UMP), Gambang, Kuantan, Malaysia

    Lakhveer Singh

  2. CSIR - Institute of Genomics and Integrative Biology, New Delhi, India

    Vipin Chandra Kalia

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Banu, J.R., Kavitha, S. (2017). Various Sludge Pretreatments: Their Impact on Biogas Generation. In: Singh, L., Kalia, V. (eds) Waste Biomass Management – A Holistic Approach. Springer, Cham. https://doi.org/10.1007/978-3-319-49595-8_3

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