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The effect of packing density on the startup and operation of an anaerobic single stage fixed wheat straw bed digester

Svensson, Mattias LU ; Björnsson, Lovisa LU ; Batstone, Damien LU and Mattiasson, Bo LU (2002) In Proceedings of 3rd International Symposium for Anaerobic Digestion of Solid Wastes p.14-14
Abstract
In Southern Sweden, production of renewable energy from crop residues digestion is viewed as a worthwhile alternative. Also, the process gives valuable mineralised nitrogen as a by-product, which when produced at farm-scale can be recycled for ecological farming. It is difficult to achieve economic utilisation of crop residues in centralised slurry digestion, mainly because of the greater transport costs. Traditional reactor designs have a too low cost efficiency on farm-scale level, and therefore it is essential to introduce technologies and practices leading to economically viable reactor systems on this scale. One very simple reactor design being considered is the vertical column fixed bed digester. This allows relatively high loading... (More)
In Southern Sweden, production of renewable energy from crop residues digestion is viewed as a worthwhile alternative. Also, the process gives valuable mineralised nitrogen as a by-product, which when produced at farm-scale can be recycled for ecological farming. It is difficult to achieve economic utilisation of crop residues in centralised slurry digestion, mainly because of the greater transport costs. Traditional reactor designs have a too low cost efficiency on farm-scale level, and therefore it is essential to introduce technologies and practices leading to economically viable reactor systems on this scale. One very simple reactor design being considered is the vertical column fixed bed digester. This allows relatively high loading rates, combined with a low maintenance requirement. Plant material can be used as a biofilm carrier, and is an inexpensive and highly efficient alternative to traditional support materials, and wheat straw, with its rigid structure and low biodegradability, is a good candidate. In this study, the influence of packing density on startup and single stage semi-batch operation of vertical column fixed bed digesters was examined in one laboratory-scale and three pilot-scale systems. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
startup, straw digestion, fixed bed, crop residues, anaerobic filter, high-solids, packing density
in
Proceedings of 3rd International Symposium for Anaerobic Digestion of Solid Wastes
editor
Wilderer, PA
pages
14 - 14
publisher
Technische Universität München
language
English
LU publication?
yes
id
15aa6227-e80a-41a9-b794-56f00fbf508d (old id 528389)
date added to LUP
2007-09-25 12:00:16
date last changed
2016-04-16 10:07:29
@misc{15aa6227-e80a-41a9-b794-56f00fbf508d,
  abstract     = {In Southern Sweden, production of renewable energy from crop residues digestion is viewed as a worthwhile alternative. Also, the process gives valuable mineralised nitrogen as a by-product, which when produced at farm-scale can be recycled for ecological farming. It is difficult to achieve economic utilisation of crop residues in centralised slurry digestion, mainly because of the greater transport costs. Traditional reactor designs have a too low cost efficiency on farm-scale level, and therefore it is essential to introduce technologies and practices leading to economically viable reactor systems on this scale. One very simple reactor design being considered is the vertical column fixed bed digester. This allows relatively high loading rates, combined with a low maintenance requirement. Plant material can be used as a biofilm carrier, and is an inexpensive and highly efficient alternative to traditional support materials, and wheat straw, with its rigid structure and low biodegradability, is a good candidate. In this study, the influence of packing density on startup and single stage semi-batch operation of vertical column fixed bed digesters was examined in one laboratory-scale and three pilot-scale systems.},
  author       = {Svensson, Mattias and Björnsson, Lovisa and Batstone, Damien and Mattiasson, Bo},
  editor       = {Wilderer, PA},
  keyword      = {startup,straw digestion,fixed bed,crop residues,anaerobic filter,high-solids,packing density},
  language     = {eng},
  pages        = {14--14},
  publisher    = {ARRAY(0x9f375f0)},
  series       = {Proceedings of 3rd International Symposium for Anaerobic Digestion of Solid Wastes},
  title        = {The effect of packing density on the startup and operation of an anaerobic single stage fixed wheat straw bed digester},
  year         = {2002},
}