Advanced

Enhancement of bioethanol production using a blend of furfural production residue and tea-seed cake

Zheng, Tianran; Xing, Yang; Zhou, Ziyuan; Carrasco, Cristhian LU and Jiang, Jianxin (2016) In BioResources 11(3). p.7451-7461
Abstract

The price of raw material, energy demand in the pretreatment step, and enzyme usage rate are the major cost factors in the process of converting biomass to bioethanol. Unwashed furfural residues (FRs) possess great potential for application in bioethanol production. Surfactant addition is an effective method to enhance the fermentation rate. In this study, unwashed FRs were used directly as raw materials to produce bioethanol. Tea-seed cake (TSC), tea seed residues that contained protein and saponin, was added in the simultaneous saccharification and fermentation (SSF) process. The effect of TSC dosage on SSF was compared. TSC was added at the dosage of 10 g/L, which resulted in a final ethanol yield of 87.2%. However, a high... (More)

The price of raw material, energy demand in the pretreatment step, and enzyme usage rate are the major cost factors in the process of converting biomass to bioethanol. Unwashed furfural residues (FRs) possess great potential for application in bioethanol production. Surfactant addition is an effective method to enhance the fermentation rate. In this study, unwashed FRs were used directly as raw materials to produce bioethanol. Tea-seed cake (TSC), tea seed residues that contained protein and saponin, was added in the simultaneous saccharification and fermentation (SSF) process. The effect of TSC dosage on SSF was compared. TSC was added at the dosage of 10 g/L, which resulted in a final ethanol yield of 87.2%. However, a high concentration of TSC could induce cytotoxicity in yeast. The surface tension (approximately 33.92 mM/m) at SSF using TSC-medium was much lower than that of other fermentation systems (about 64.67 mN/m). Further contact angle testing showed that TSC-medium (21.7°) had better wetting capacity than FRs (45.6°). This study provided a proposed process strategy that SSF with the addition of TSC could be a minimum consumption of chemicals and enzymes for future cellulosic ethanol production process.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bioethanol, Furfural residues, Simultaneous saccharification and fermentation, Tea-seed cake
in
BioResources
volume
11
issue
3
pages
11 pages
publisher
North Carolina State University, College of Natural Resources
external identifiers
  • scopus:84988535671
  • wos:000384922400138
ISSN
1930-2126
DOI
10.15376/biores.11.3.7451-7461
language
English
LU publication?
yes
id
3c9325c2-fe0e-4971-b004-f8a5078abd89
date added to LUP
2017-02-23 11:03:46
date last changed
2017-09-18 11:34:53
@article{3c9325c2-fe0e-4971-b004-f8a5078abd89,
  abstract     = {<p>The price of raw material, energy demand in the pretreatment step, and enzyme usage rate are the major cost factors in the process of converting biomass to bioethanol. Unwashed furfural residues (FRs) possess great potential for application in bioethanol production. Surfactant addition is an effective method to enhance the fermentation rate. In this study, unwashed FRs were used directly as raw materials to produce bioethanol. Tea-seed cake (TSC), tea seed residues that contained protein and saponin, was added in the simultaneous saccharification and fermentation (SSF) process. The effect of TSC dosage on SSF was compared. TSC was added at the dosage of 10 g/L, which resulted in a final ethanol yield of 87.2%. However, a high concentration of TSC could induce cytotoxicity in yeast. The surface tension (approximately 33.92 mM/m) at SSF using TSC-medium was much lower than that of other fermentation systems (about 64.67 mN/m). Further contact angle testing showed that TSC-medium (21.7°) had better wetting capacity than FRs (45.6°). This study provided a proposed process strategy that SSF with the addition of TSC could be a minimum consumption of chemicals and enzymes for future cellulosic ethanol production process.</p>},
  author       = {Zheng, Tianran and Xing, Yang and Zhou, Ziyuan and Carrasco, Cristhian and Jiang, Jianxin},
  issn         = {1930-2126},
  keyword      = {Bioethanol,Furfural residues,Simultaneous saccharification and fermentation,Tea-seed cake},
  language     = {eng},
  number       = {3},
  pages        = {7451--7461},
  publisher    = {North Carolina State University, College of Natural Resources},
  series       = {BioResources},
  title        = {Enhancement of bioethanol production using a blend of furfural production residue and tea-seed cake},
  url          = {http://dx.doi.org/10.15376/biores.11.3.7451-7461},
  volume       = {11},
  year         = {2016},
}