Enhancing performance in anaerobic high-solids stratified bed digesters by straw bed implementation
(2007) In Bioresource Technology 98(1). p.46-52- Abstract
- Anaerobic high-solids single-stage stratified bed digesters have been found to be simple and flexible design candidates for small-scale reactors located in medium- to low-technology environments. In the present study, wheat straw was used as the starter material for the stratified bed. Upon green mass feeding, the anaerobically stabilised straw bed functioned both as a biofilm support and as a particulate filter. It enabled a direct onset of 7 kg VS m(-3) batch loads, added twice a week, and permitted a low but consistent bed permeability during feeding at an average superficial flow velocity of 1 m d(-1) to be achieved. Fed-batch tests with sugar beet tops in pilot- and laboratory-scale setups at an average loading rate of 2 kg VS m(-3)... (More)
- Anaerobic high-solids single-stage stratified bed digesters have been found to be simple and flexible design candidates for small-scale reactors located in medium- to low-technology environments. In the present study, wheat straw was used as the starter material for the stratified bed. Upon green mass feeding, the anaerobically stabilised straw bed functioned both as a biofilm support and as a particulate filter. It enabled a direct onset of 7 kg VS m(-3) batch loads, added twice a week, and permitted a low but consistent bed permeability during feeding at an average superficial flow velocity of 1 m d(-1) to be achieved. Fed-batch tests with sugar beet tops in pilot- and laboratory-scale setups at an average loading rate of 2 kg VS m(-3) d(-1) resulted in average biogas production rates of 1.2-1.4 m(3) m(-3) d(-1) and methane yields of 0.31-0.36 m(3) kg(-1) VSadded. At the end of the laboratory-scale feeding trial, the 200 day old straw bed had compacted to 50% of its initial volume, without any negative effects on performance being detectable. (c) 2005 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/387149
- author
- Svensson, Mattias LU ; Björnsson, Lovisa LU and Mattiasson, Bo LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- lignocellulosics, fixed bed, farm-scale, dry digestion, packing density, crop residues, straw bed priming, foaming, intermittent leachate recycle
- in
- Bioresource Technology
- volume
- 98
- issue
- 1
- pages
- 46 - 52
- publisher
- Elsevier
- external identifiers
-
- wos:000241443700007
- scopus:33748053960
- pmid:16426845
- ISSN
- 1873-2976
- DOI
- 10.1016/j.biortech.2005.11.023
- language
- English
- LU publication?
- yes
- id
- 886bc9de-60b4-40a6-a161-01e8c91c7a8a (old id 387149)
- date added to LUP
- 2016-04-01 15:36:29
- date last changed
- 2022-01-28 06:11:05
@article{886bc9de-60b4-40a6-a161-01e8c91c7a8a,
abstract = {{Anaerobic high-solids single-stage stratified bed digesters have been found to be simple and flexible design candidates for small-scale reactors located in medium- to low-technology environments. In the present study, wheat straw was used as the starter material for the stratified bed. Upon green mass feeding, the anaerobically stabilised straw bed functioned both as a biofilm support and as a particulate filter. It enabled a direct onset of 7 kg VS m(-3) batch loads, added twice a week, and permitted a low but consistent bed permeability during feeding at an average superficial flow velocity of 1 m d(-1) to be achieved. Fed-batch tests with sugar beet tops in pilot- and laboratory-scale setups at an average loading rate of 2 kg VS m(-3) d(-1) resulted in average biogas production rates of 1.2-1.4 m(3) m(-3) d(-1) and methane yields of 0.31-0.36 m(3) kg(-1) VSadded. At the end of the laboratory-scale feeding trial, the 200 day old straw bed had compacted to 50% of its initial volume, without any negative effects on performance being detectable. (c) 2005 Elsevier Ltd. All rights reserved.}},
author = {{Svensson, Mattias and Björnsson, Lovisa and Mattiasson, Bo}},
issn = {{1873-2976}},
keywords = {{lignocellulosics; fixed bed; farm-scale; dry digestion; packing density; crop residues; straw bed priming; foaming; intermittent leachate recycle}},
language = {{eng}},
number = {{1}},
pages = {{46--52}},
publisher = {{Elsevier}},
series = {{Bioresource Technology}},
title = {{Enhancing performance in anaerobic high-solids stratified bed digesters by straw bed implementation}},
url = {{http://dx.doi.org/10.1016/j.biortech.2005.11.023}},
doi = {{10.1016/j.biortech.2005.11.023}},
volume = {{98}},
year = {{2007}},
}