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Understanding animal bedding heterogeneity for the advancement of manure-based biorefineries

Sanchis Sebastia, Miguel LU ; Erdei, Borbala LU ; Galbe, Mats LU and Wallberg, Ola LU (2017)
Abstract
Animal farm waste rich in fiber offers the possibility to integrate ethanol production in the biogas industry, which makes it a very promising feedstock for future biorefineries. However, it is a challenging feedstock due to: 1) its highly heterogeneous nature [2] and 2) loss of yield caused by Maillard reactions during pretreatment. Chen et al. proposed to wash the material with water to separate the fiber from the manure and thus avoid the Maillard reactions.

This study looks deeper into the composition and washing of animal bedding, a mixture of manure and wheat straw. We have hypothesized that this bedding material can be explained as a mixture of 3 layers at different stages of degradation. To validate this hypothesis,... (More)
Animal farm waste rich in fiber offers the possibility to integrate ethanol production in the biogas industry, which makes it a very promising feedstock for future biorefineries. However, it is a challenging feedstock due to: 1) its highly heterogeneous nature [2] and 2) loss of yield caused by Maillard reactions during pretreatment. Chen et al. proposed to wash the material with water to separate the fiber from the manure and thus avoid the Maillard reactions.

This study looks deeper into the composition and washing of animal bedding, a mixture of manure and wheat straw. We have hypothesized that this bedding material can be explained as a mixture of 3 layers at different stages of degradation. To validate this hypothesis, samples collected at different points along the height of the bedding will be washed until manure is completely removed and then analyzed according to the NREL procedures.

Preliminary results show that long-term layers contain 52% of manure compared to 38% in short-term layers. Apart from the quantity of fiber, it seems that the quality will also play a role in the ethanol potential, as the carbohydrate content in long-term and short-term fibers is 63% and 72%, respectively. Regarding the washing, it has been proven that the washing curve of the bedding can be predicted as the pondered average of the washing curves for each of the layers. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
unpublished
subject
keywords
Manure, Biorefinery, Biomass composition
language
English
LU publication?
yes
id
b709b262-27c4-4c89-b75a-4398c11b1202
date added to LUP
2017-10-30 19:11:07
date last changed
2017-11-01 19:52:06
@misc{b709b262-27c4-4c89-b75a-4398c11b1202,
  abstract     = {Animal farm waste rich in fiber offers the possibility to integrate ethanol production in the biogas industry, which makes it a very promising feedstock for future biorefineries. However, it is a challenging feedstock due to: 1) its highly heterogeneous nature [2] and 2) loss of yield caused by Maillard reactions during pretreatment. Chen et al. proposed to wash the material with water to separate the fiber from the manure and thus avoid the Maillard reactions.<br/><br/>This study looks deeper into the composition and washing of animal bedding, a mixture of manure and wheat straw. We have hypothesized that this bedding material can be explained as a mixture of 3 layers at different stages of degradation. To validate this hypothesis, samples collected at different points along the height of the bedding will be washed until manure is completely removed and then analyzed according to the NREL procedures.<br/><br/>Preliminary results show that long-term layers contain 52% of manure compared to 38% in short-term layers. Apart from the quantity of fiber, it seems that the quality will also play a role in the ethanol potential, as the carbohydrate content in long-term and short-term fibers is 63% and 72%, respectively. Regarding the washing, it has been proven that the washing curve of the bedding can be predicted as the pondered average of the washing curves for each of the layers.},
  author       = {Sanchis Sebastia, Miguel and Erdei, Borbala and Galbe, Mats and Wallberg, Ola},
  keyword      = {Manure,Biorefinery,Biomass composition},
  language     = {eng},
  month        = {10},
  title        = {Understanding animal bedding heterogeneity for the advancement of manure-based biorefineries},
  year         = {2017},
}