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Enhanced methane production during the anaerobic digestion of chicken manure through the addition of pristine and recovered biochar

journal contribution
posted on 2024-11-03, 12:39 authored by Tien Ngo, Kashish Ranlaul, Andrew BallAndrew Ball
This study investigates the impact of a 50:50 mixture of pristine and recovered biochar (CBC) on high-solids anaerobic digestion of chicken manure, comparing its performance with pristine biochar (PBC), recovered biochar (RBC), and a Control group. The experiment, conducted under mesophilic conditions using a 15% total solid content and 5% biochar dosage, showed that CBC treatment achieves the highest cumulative biogas production (314 mL g−1-VS) and the highest cumulative methane production o(112 mL g−1-VS) over 21 days. Further, digesters containing CBC exhibited the highest rate of COD removal (80.8%), surpassing digesters amended with PBC (71.1%), RBC (69.2%) and Control (57.8%). Although digesters amended with PBC showed a higher TAN adsorption capacity of 48 mg g−1 compared to the 32 mg g−1 of CBC, both TAN adsorption and the existing microbial population of 1.2 × 1014 microbes per gram, have allowed CBC to exhibit superior digester performance. These findings offer valuable insights for optimising anaerobic digestion processes and cutting operational costs in waste-to-energy projects incorporating biochar as an additive.

History

Journal

Cleaner Waste Systems

Volume

7

Number

100126

Start page

1

End page

1

Total pages

1

Publisher

Elsevier

Place published

United Kingdom

Language

English

Copyright

© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Former Identifier

2006127667

Esploro creation date

2024-01-31

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