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Solid state anaerobic digestion of water poor feedstock for methane yield: An overview of process characteristics and challenges

journal contribution
posted on 07.09.2021, 11:25 by Kunwar Paritosh, Vinod Kumar, Nidhi Pareek, Dinabandhu Sahoo, Yadira Bajon Fernandez, Frederic Coulon, Tanja RaduTanja Radu, Nupur Kesharwani, Vivekanand Vivekanand
Solid state anaerobic digestion (SSAD) of water poor feedstock may be a promising technology for energy recovery. Feedstocks having high solid concentration like lignocellulosic biomass, crop residues, forestry waste and organic fraction of municipal waste may be the appropriate feedstock for its biochemical conversion into energy carries like biomethane through SSAD. Compared to liquid state anaerobic digestion (LSAD), SSAD can handle higher organic loading rates (OLR), requires less water and smaller reactor volume and may have lower energy demand for heating or stirring and higher volumetric methane productivity. Besides these, pathogen inactivation may also be achieved in SSAD of biodegradable waste. Around 60% of recently built AD systems have adopted SSAD technology. However, the process stability of an SSAD system may have several constraints like limited mass transfer, process inhibitors and selection of digester type and should be addressed prior to the implementation of SSAD technology. In this article, a comprehensive overview of the key aspects influencing the performance of SSAD is discussed along with the need for mathematical modelling approaches. Further to this, reactor configuration for SSAD and digestate management requirement and practice for solid-state condition are reviewed for a better insight of SSAD technology.

Funding

Department of Biotechnology-Government of India (Grant No. BT/RLF/ReEntry/04/2013)

Department of Science and Technology-Government of India (Grant No. ECR/2016/000989)

History

School

  • Architecture, Building and Civil Engineering

Published in

Waste Disposal & Sustainable Energy

Volume

3

Pages

227-245

Publisher

Springer

Version

AM (Accepted Manuscript)

Rights holder

© Zhejiang University Press

Publisher statement

This paper was accepted for publication in the journal Waste Disposal & Sustainable Energy and the definitive published version is available at https://doi.org/10.1007/s42768-021-00076-x.

Acceptance date

19/05/2021

Publication date

2021-07-14

Copyright date

2021

ISSN

2524-7980

eISSN

2524-7891

Language

en

Depositor

Dr Tanja Radu. Deposit date: 2 September 2021