The University of Southampton
University of Southampton Institutional Repository

Ammonia removal in food waste anaerobic digestion using a side-stream stripping process

Ammonia removal in food waste anaerobic digestion using a side-stream stripping process
Ammonia removal in food waste anaerobic digestion using a side-stream stripping process
Three 35-L anaerobic digesters fed on source segregated food waste were coupled to side-stream ammonia stripping columns and operated semi-continuously over 300 days, with results in terms of performance and stability compared to those of a control digester without stripping. Biogas was used as the stripping medium, and the columns were operated under different conditions of temperature (55, 70, 85 °C), pH (unadjusted and pH 10), and RT (2 to 5 days). To reduce digester TAN concentrations to a useful level a high temperature (?70°C) and a pH of 10 were needed; under these conditions 48% of the TAN was removed over a 138-day period without any detrimental effects on digester performance. Other effects of the stripping process were an overall reduction in digestate organic nitrogen-containing fraction compared to the control and a recovery in the acetoclastic pathway when TAN concentration was 1770 ± 20 mg kg-1.
0960-8524
Serna-Maza, Alba
81ce5c84-2b04-49b3-86fd-3a5a6834efc2
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Serna-Maza, Alba
81ce5c84-2b04-49b3-86fd-3a5a6834efc2
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f

Serna-Maza, Alba, Heaven, Sonia and Banks, Charles J. (2013) Ammonia removal in food waste anaerobic digestion using a side-stream stripping process. Bioresource Technology. (doi:10.1016/j.biortech.2013.10.093).

Record type: Article

Abstract

Three 35-L anaerobic digesters fed on source segregated food waste were coupled to side-stream ammonia stripping columns and operated semi-continuously over 300 days, with results in terms of performance and stability compared to those of a control digester without stripping. Biogas was used as the stripping medium, and the columns were operated under different conditions of temperature (55, 70, 85 °C), pH (unadjusted and pH 10), and RT (2 to 5 days). To reduce digester TAN concentrations to a useful level a high temperature (?70°C) and a pH of 10 were needed; under these conditions 48% of the TAN was removed over a 138-day period without any detrimental effects on digester performance. Other effects of the stripping process were an overall reduction in digestate organic nitrogen-containing fraction compared to the control and a recovery in the acetoclastic pathway when TAN concentration was 1770 ± 20 mg kg-1.

Text
Serna et al ammonia stripping 2013 - scholar text.pdf - Author's Original
Download (373kB)

More information

Published date: 5 November 2013
Organisations: Water & Environmental Engineering Group

Identifiers

Local EPrints ID: 359728
URI: http://eprints.soton.ac.uk/id/eprint/359728
ISSN: 0960-8524
PURE UUID: 5ed7ffb9-90d9-4218-89c1-8209aee30916
ORCID for Sonia Heaven: ORCID iD orcid.org/0000-0001-7798-4683
ORCID for Charles J. Banks: ORCID iD orcid.org/0000-0001-6795-814X

Catalogue record

Date deposited: 22 Nov 2013 14:33
Last modified: 15 Mar 2024 02:52

Export record

Altmetrics

Contributors

Author: Alba Serna-Maza
Author: Sonia Heaven ORCID iD

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.

×