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An experimental study on producing ethanol from animal bedding

Sanchis Sebastiá, Miguel LU (2017) KET920 20171
Chemical Engineering (M.Sc.Eng.)
Abstract
One of the most promising alternatives to reduce global CO2 emissions is the replacement of fossil fuels by biofuels in the transportation sector. Production of biofuels from energy crops or residues arises as an answer, but the technology is still costly to be implemented at commercial scale. This project proposes reducing bioethanol production costs by using animal bedding as feedstock. The main aim is to assess the effect of the initial washing step on the downstream process and the idea is proven feasible by running the entire ethanol production process in lab-scale. The results reported in this study are to be regarded as proof-of-concept; the study showed that it is possible to utilize animal bedding for ethanol production.

It was... (More)
One of the most promising alternatives to reduce global CO2 emissions is the replacement of fossil fuels by biofuels in the transportation sector. Production of biofuels from energy crops or residues arises as an answer, but the technology is still costly to be implemented at commercial scale. This project proposes reducing bioethanol production costs by using animal bedding as feedstock. The main aim is to assess the effect of the initial washing step on the downstream process and the idea is proven feasible by running the entire ethanol production process in lab-scale. The results reported in this study are to be regarded as proof-of-concept; the study showed that it is possible to utilize animal bedding for ethanol production.

It was noted during the washing of the straw to separate it from the manure that the liquid-to-solid ratio in the operation did not alter the washing efficiency, but the number of washing steps did. Pretreatment with H2SO4 made possible to hydrolyze more than 80% cellulose after pretreatment and enzymatic hydrolysis. The material performance improved when the washing efficiency was higher and less water was used during washing procedure. Yeast could survive the inhibitors formed during pretreatment and ethanol was successfully produced. The effect of the washing efficiency on the fermentation of the substrate could not be determined due to an infection in the fermenters. (Less)
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author
Sanchis Sebastiá, Miguel LU
supervisor
organization
course
KET920 20171
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Ethanol, Lignocellulosic, Biofuels, chemical engineering, kemiteknik
language
English
id
8904012
date added to LUP
2017-03-31 09:17:47
date last changed
2017-03-31 09:17:47
@misc{8904012,
  abstract     = {One of the most promising alternatives to reduce global CO2 emissions is the replacement of fossil fuels by biofuels in the transportation sector. Production of biofuels from energy crops or residues arises as an answer, but the technology is still costly to be implemented at commercial scale. This project proposes reducing bioethanol production costs by using animal bedding as feedstock. The main aim is to assess the effect of the initial washing step on the downstream process and the idea is proven feasible by running the entire ethanol production process in lab-scale. The results reported in this study are to be regarded as proof-of-concept; the study showed that it is possible to utilize animal bedding for ethanol production.

It was noted during the washing of the straw to separate it from the manure that the liquid-to-solid ratio in the operation did not alter the washing efficiency, but the number of washing steps did. Pretreatment with H2SO4 made possible to hydrolyze more than 80% cellulose after pretreatment and enzymatic hydrolysis. The material performance improved when the washing efficiency was higher and less water was used during washing procedure. Yeast could survive the inhibitors formed during pretreatment and ethanol was successfully produced. The effect of the washing efficiency on the fermentation of the substrate could not be determined due to an infection in the fermenters.},
  author       = {Sanchis Sebastiá, Miguel},
  keyword      = {Ethanol,Lignocellulosic,Biofuels,chemical engineering,kemiteknik},
  language     = {eng},
  note         = {Student Paper},
  title        = {An experimental study on producing ethanol from animal bedding},
  year         = {2017},
}