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 2): hydrolysis, acidification and methanogenesis in a two-phase system

Cysneiros, Denise, Banks, Charles J., Heaven, Sonia and Karatzas, Kimon Karatzas G. (2011) The role of phase separation and feed cycle length in leach beds coupled to methanogenic reactors for digestion of a solid substrate (Part 2): hydrolysis, acidification and methanogenesis in a two-phase system Bioresource Technology, 102, (16), pp. 7393-7400. (doi:10.1016/j.biortech.2011.05.042). (PMID:21665466).

Record type: Article

Abstract

The effect of phase separation and batch duration on the trophic stages of anaerobic digestion was assessed for the first time in leach beds coupled to methanogenic reactors digesting maize (Zea mays). The system was operated for consecutive batches of 7, 14 and 28 days for ?120 days. Hydrolysis rate was higher the shorter the batch, reaching 8.5 gTSdestroyed d?1 in the 7-day system. Phase separation did not affect acidification but methanogenesis was enhanced in the short feed cycle leach beds. Phase separation was inefficient on the 7-day system, where ?89% of methane was produced in the leach bed. Methane production rate increased with shortening the feed cycle, reaching 3.523 l d?1 average in the 7-day system. Low strength leachate from the leach beds decreased methanogenic activity of methanogenic reactors’ sludges. Enumeration of cellulolytic and methanogenic microorganisms indicated a constant inoculation of leach beds and methanogenic reactors through leachate recirculation

Full text not available from this repository.

More information

e-pub ahead of print date: 26 May 2011
Published date: August 2011
Organisations: Centre for Environmental Science

Identifiers

Local EPrints ID: 300472
URI: http://eprints.soton.ac.uk/id/eprint/300472
ISSN: 0960-8524
PURE UUID: 4f51e00d-4cdc-4e90-9132-1273b9770955

Catalogue record

Date deposited: 22 Feb 2012 12:27
Last modified: 18 Jul 2017 06:14

Export record

Altmetrics

Contributors

Author: Denise Cysneiros
Author: Sonia Heaven
Author: Kimon Karatzas G. Karatzas

University divisions

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.

×