Development of an estimation model for the evaluation of the energy requirement of dilute acid pretreatments of biomass

Oluwakemi A T Mafe, Scott M. Davies, John Hancock, Chenyu Du

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This study aims to develop a mathematical model to evaluate the energy required by pretreatment processes used in the production of second generation ethanol. A dilute acid pretreatment process reported by National Renewable Energy Laboratory (NREL) was selected as an example for the model's development. The energy demand of the pretreatment process was evaluated by considering the change of internal energy of the substances, the reaction energy, the heat lost and the work done to/by the system based on a number of simplifying assumptions. Sensitivity analyses were performed on the solid loading rate, temperature, acid concentration and water evaporation rate. The results from the sensitivity analyses established that the solids loading rate had the most significant impact on the energy demand. The model was then verified with data from the NREL benchmark process. Application of this model on other dilute acid pretreatment processes reported in the literature illustrated that although similar sugar yields were reported by several studies, the energy required by the different pretreatments varied significantly.

Original languageEnglish
Pages (from-to)28-38
Number of pages11
JournalBiomass and Bioenergy
Volume72
Early online date12 Dec 2014
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes

Fingerprint

energy requirements
Biomass
pretreatment
Acids
acids
acid
biomass
energy
renewable energy sources
Sugars
Evaporation
Ethanol
Mathematical models
evaporation rate
evaluation
Water
ethanol
sugar
mathematical models
evaporation

Cite this

@article{2a30a18d4ff14ac183cfe022229fc6ae,
title = "Development of an estimation model for the evaluation of the energy requirement of dilute acid pretreatments of biomass",
abstract = "This study aims to develop a mathematical model to evaluate the energy required by pretreatment processes used in the production of second generation ethanol. A dilute acid pretreatment process reported by National Renewable Energy Laboratory (NREL) was selected as an example for the model's development. The energy demand of the pretreatment process was evaluated by considering the change of internal energy of the substances, the reaction energy, the heat lost and the work done to/by the system based on a number of simplifying assumptions. Sensitivity analyses were performed on the solid loading rate, temperature, acid concentration and water evaporation rate. The results from the sensitivity analyses established that the solids loading rate had the most significant impact on the energy demand. The model was then verified with data from the NREL benchmark process. Application of this model on other dilute acid pretreatment processes reported in the literature illustrated that although similar sugar yields were reported by several studies, the energy required by the different pretreatments varied significantly.",
keywords = "Dilute acid pretreatment, Energy model, Energy requirement, Lignocellulosic ethanol, Solids loading rate",
author = "Mafe, {Oluwakemi A T} and Davies, {Scott M.} and John Hancock and Chenyu Du",
year = "2015",
month = "1",
day = "1",
doi = "10.1016/j.biombioe.2014.11.024",
language = "English",
volume = "72",
pages = "28--38",
journal = "Biomass and Bioenergy",
issn = "0961-9534",
publisher = "Elsevier Limited",

}

Development of an estimation model for the evaluation of the energy requirement of dilute acid pretreatments of biomass. / Mafe, Oluwakemi A T; Davies, Scott M.; Hancock, John; Du, Chenyu.

In: Biomass and Bioenergy, Vol. 72, 01.01.2015, p. 28-38.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Development of an estimation model for the evaluation of the energy requirement of dilute acid pretreatments of biomass

AU - Mafe, Oluwakemi A T

AU - Davies, Scott M.

AU - Hancock, John

AU - Du, Chenyu

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This study aims to develop a mathematical model to evaluate the energy required by pretreatment processes used in the production of second generation ethanol. A dilute acid pretreatment process reported by National Renewable Energy Laboratory (NREL) was selected as an example for the model's development. The energy demand of the pretreatment process was evaluated by considering the change of internal energy of the substances, the reaction energy, the heat lost and the work done to/by the system based on a number of simplifying assumptions. Sensitivity analyses were performed on the solid loading rate, temperature, acid concentration and water evaporation rate. The results from the sensitivity analyses established that the solids loading rate had the most significant impact on the energy demand. The model was then verified with data from the NREL benchmark process. Application of this model on other dilute acid pretreatment processes reported in the literature illustrated that although similar sugar yields were reported by several studies, the energy required by the different pretreatments varied significantly.

AB - This study aims to develop a mathematical model to evaluate the energy required by pretreatment processes used in the production of second generation ethanol. A dilute acid pretreatment process reported by National Renewable Energy Laboratory (NREL) was selected as an example for the model's development. The energy demand of the pretreatment process was evaluated by considering the change of internal energy of the substances, the reaction energy, the heat lost and the work done to/by the system based on a number of simplifying assumptions. Sensitivity analyses were performed on the solid loading rate, temperature, acid concentration and water evaporation rate. The results from the sensitivity analyses established that the solids loading rate had the most significant impact on the energy demand. The model was then verified with data from the NREL benchmark process. Application of this model on other dilute acid pretreatment processes reported in the literature illustrated that although similar sugar yields were reported by several studies, the energy required by the different pretreatments varied significantly.

KW - Dilute acid pretreatment

KW - Energy model

KW - Energy requirement

KW - Lignocellulosic ethanol

KW - Solids loading rate

UR - http://www.scopus.com/inward/record.url?scp=84916918731&partnerID=8YFLogxK

U2 - 10.1016/j.biombioe.2014.11.024

DO - 10.1016/j.biombioe.2014.11.024

M3 - Article

VL - 72

SP - 28

EP - 38

JO - Biomass and Bioenergy

JF - Biomass and Bioenergy

SN - 0961-9534

ER -