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Evaluation of straw as a biofilm carrier in the methanogenic stage of two-stage anaerobic digestion of crop residues

Andersson, Jonatan LU and Björnsson, Lovisa LU (2002) In Bioresource Technology 85(1). p.51-56
Abstract
Straw was evaluated as a biofilm carrier in the methanogenic stage of the two-stage anaerobic digestion of crop residues. Three reactor configurations were studied, a straw-packed-bed reactor, a glass packed-bed reactor and a reactor containing suspended plastic carriers. The reactor with the packed straw bed showed the best results. It had the highest methane production, 5.4 11(-1) d(-1), and the chemical oxygen demand (COD) removal ranged from 73-50% at organic loading rates from 2.4-25 g COD 1(-1) d(-1). The degradation pattern of volatile fatty acids showed that the degradation of propionate and longer-chain fatty acids was limiting at higher organic loading rates. A stable effluent pH showed that the packed-bed reactors had good... (More)
Straw was evaluated as a biofilm carrier in the methanogenic stage of the two-stage anaerobic digestion of crop residues. Three reactor configurations were studied, a straw-packed-bed reactor, a glass packed-bed reactor and a reactor containing suspended plastic carriers. The reactor with the packed straw bed showed the best results. It had the highest methane production, 5.4 11(-1) d(-1), and the chemical oxygen demand (COD) removal ranged from 73-50% at organic loading rates from 2.4-25 g COD 1(-1) d(-1). The degradation pattern of volatile fatty acids showed that the degradation of propionate and longer-chain fatty acids was limiting at higher organic loading rates. A stable effluent pH showed that the packed-bed reactors had good ability to withstand the variations in load and volatile fatty acid concentrations that can occur in the two-stage process. The conclusion is that straw would work very well in the intended application. A further benefit is that straw is a common agricultural waste product and requires only limited resources concerning handling and cost. (C) 2002 Elsevier Science Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
biogas, two-stage anaerobic digestion, biofilm, crop residues, straw
in
Bioresource Technology
volume
85
issue
1
pages
51 - 56
publisher
Elsevier
external identifiers
  • pmid:12146643
  • wos:000176815300009
  • scopus:0036014885
ISSN
1873-2976
DOI
10.1016/S0960-8524(02)00071-8
language
English
LU publication?
yes
id
116117ee-4002-4cef-a280-df38c4aef2d4 (old id 333879)
date added to LUP
2007-08-07 09:06:00
date last changed
2017-08-13 04:22:34
@article{116117ee-4002-4cef-a280-df38c4aef2d4,
  abstract     = {Straw was evaluated as a biofilm carrier in the methanogenic stage of the two-stage anaerobic digestion of crop residues. Three reactor configurations were studied, a straw-packed-bed reactor, a glass packed-bed reactor and a reactor containing suspended plastic carriers. The reactor with the packed straw bed showed the best results. It had the highest methane production, 5.4 11(-1) d(-1), and the chemical oxygen demand (COD) removal ranged from 73-50% at organic loading rates from 2.4-25 g COD 1(-1) d(-1). The degradation pattern of volatile fatty acids showed that the degradation of propionate and longer-chain fatty acids was limiting at higher organic loading rates. A stable effluent pH showed that the packed-bed reactors had good ability to withstand the variations in load and volatile fatty acid concentrations that can occur in the two-stage process. The conclusion is that straw would work very well in the intended application. A further benefit is that straw is a common agricultural waste product and requires only limited resources concerning handling and cost. (C) 2002 Elsevier Science Ltd. All rights reserved.},
  author       = {Andersson, Jonatan and Björnsson, Lovisa},
  issn         = {1873-2976},
  keyword      = {biogas,two-stage anaerobic digestion,biofilm,crop residues,straw},
  language     = {eng},
  number       = {1},
  pages        = {51--56},
  publisher    = {Elsevier},
  series       = {Bioresource Technology},
  title        = {Evaluation of straw as a biofilm carrier in the methanogenic stage of two-stage anaerobic digestion of crop residues},
  url          = {http://dx.doi.org/10.1016/S0960-8524(02)00071-8},
  volume       = {85},
  year         = {2002},
}