The role of phase separation and feed cycle length in leach beds coupled to methanogenic reactors for digestion of a solid substrate (Part 1): Optimisation of reactors’ performance
The role of phase separation and feed cycle length in leach beds coupled to methanogenic reactors for digestion of a solid substrate (Part 1): Optimisation of reactors’ performance
A two-phase system composed by a leach bed and a methanogenic reactor was modified for the first time to improve volumetric substrate degradation and methane yields from a complex substrate (maize; Zeamays). The system, which was operated for consecutive feed cycles of different durations for 120 days, was highly flexible and its performance improved by altering operational conditions. Daily substrate degradation was higher the shorter the feed cycle, reaching 8.5 g TSdestroyed d?1 (7-day feed cycle) but the overall substrate degradation was higher by up to 55% when longer feed cycles (14 and 28 days) were applied. The same occurred with volumetric methane yields, reaching 0.839 m3 (m3)?1 d?1. The system performed better than others on specific methane yields, reaching 0.434 m3 kg?1 TSadded, in the 14-day and 28-day systems. The UASB and AF designs performed similarly as second stage reactors on methane yields, SCOD and VFA removal efficiencies
anaerobic digestion, leach bed reactor, methane yields, methanogenic reactor, two-phase system
56-63
Cysneiros, Denise
184bdbcf-3db4-4cc7-b1d2-8088be75dca0
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Karatzas, Kimon-Andreas G.
49744817-ecd6-4992-9e64-5bcddc177178
January 2012
Cysneiros, Denise
184bdbcf-3db4-4cc7-b1d2-8088be75dca0
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Karatzas, Kimon-Andreas G.
49744817-ecd6-4992-9e64-5bcddc177178
Cysneiros, Denise, Banks, Charles J., Heaven, Sonia and Karatzas, Kimon-Andreas G.
(2012)
The role of phase separation and feed cycle length in leach beds coupled to methanogenic reactors for digestion of a solid substrate (Part 1): Optimisation of reactors’ performance.
Bioresource Technology, 103 (1), .
Abstract
A two-phase system composed by a leach bed and a methanogenic reactor was modified for the first time to improve volumetric substrate degradation and methane yields from a complex substrate (maize; Zeamays). The system, which was operated for consecutive feed cycles of different durations for 120 days, was highly flexible and its performance improved by altering operational conditions. Daily substrate degradation was higher the shorter the feed cycle, reaching 8.5 g TSdestroyed d?1 (7-day feed cycle) but the overall substrate degradation was higher by up to 55% when longer feed cycles (14 and 28 days) were applied. The same occurred with volumetric methane yields, reaching 0.839 m3 (m3)?1 d?1. The system performed better than others on specific methane yields, reaching 0.434 m3 kg?1 TSadded, in the 14-day and 28-day systems. The UASB and AF designs performed similarly as second stage reactors on methane yields, SCOD and VFA removal efficiencies
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Published date: January 2012
Keywords:
anaerobic digestion, leach bed reactor, methane yields, methanogenic reactor, two-phase system
Organisations:
Centre for Environmental Science
Identifiers
Local EPrints ID: 300466
URI: http://eprints.soton.ac.uk/id/eprint/300466
ISSN: 0960-8524
PURE UUID: 08c513c6-c311-44b1-8079-0ecdac75f111
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Date deposited: 22 Feb 2012 11:37
Last modified: 31 May 2022 01:34
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Contributors
Author:
Denise Cysneiros
Author:
Kimon-Andreas G. Karatzas
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