The University of Southampton
University of Southampton Institutional Repository

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
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
0960-8524
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
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), 56-63.

Record type: Article

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

Full text not available from this repository.

More information

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
ORCID for Sonia Heaven: ORCID iD orcid.org/0000-0001-7798-4683

Catalogue record

Date deposited: 22 Feb 2012 11:37
Last modified: 17 Mar 2020 01:25

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×