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Evaluation of membrane performance and cost estimates during recovery of sodium hydroxide in a hemicellulose extraction process by nanofiltration

Arkell, Anders LU ; Krawczyk, Holger LU ; Thuvander, Johan LU and Jönsson, Ann-Sofi LU (2013) In Separation and Purification Technology 118. p.387-393
Abstract
The recovery the alkaline solvent from of a residual stream after the extraction of hemicelluloses in wheat bran was investigated. The solution was withdrawn from an ultrafiltration (UF) process in which hemicelluloses were recovered. The UF permeate, containing mainly NaOH, lignin and mono- and oligosaccharides, was treated by nanofiltration (NF). Seven NF membranes were tested in a parametric study, and the two membranes showing the best performance were further evaluated in a concentration study. The mean flux of a Koch SelRO MPF 36 and a Microdyn-Nadir NP010 membrane was about 200 l/m2 h during concentration to a volume reduction of 0.75. The retention of NaOH was <20%, while the retention of lignin and sugars was about 70% and... (More)
The recovery the alkaline solvent from of a residual stream after the extraction of hemicelluloses in wheat bran was investigated. The solution was withdrawn from an ultrafiltration (UF) process in which hemicelluloses were recovered. The UF permeate, containing mainly NaOH, lignin and mono- and oligosaccharides, was treated by nanofiltration (NF). Seven NF membranes were tested in a parametric study, and the two membranes showing the best performance were further evaluated in a concentration study. The mean flux of a Koch SelRO MPF 36 and a Microdyn-Nadir NP010 membrane was about 200 l/m2 h during concentration to a volume reduction of 0.75. The retention of NaOH was <20%, while the retention of lignin and sugars was about 70% and >95%, respectively. Cost estimates for a NaOH recovery process indicated that an NF plant would have a pay-back time of less than 2 months if the plant was run continuously, and 7 months if it was used 25% of the time. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nanofiltration, Lignin, Hemicelluloses, Biorefinery, Alkaline solvent recovery
in
Separation and Purification Technology
volume
118
pages
387 - 393
publisher
Elsevier
external identifiers
  • wos:000326994500045
  • scopus:84882264685
ISSN
1873-3794
DOI
10.1016/j.seppur.2013.07.015
language
English
LU publication?
yes
id
5482fc73-5718-4e97-bb4f-7095e713aacc (old id 4004644)
date added to LUP
2016-04-01 10:24:54
date last changed
2020-11-10 04:35:16
@article{5482fc73-5718-4e97-bb4f-7095e713aacc,
  abstract     = {The recovery the alkaline solvent from of a residual stream after the extraction of hemicelluloses in wheat bran was investigated. The solution was withdrawn from an ultrafiltration (UF) process in which hemicelluloses were recovered. The UF permeate, containing mainly NaOH, lignin and mono- and oligosaccharides, was treated by nanofiltration (NF). Seven NF membranes were tested in a parametric study, and the two membranes showing the best performance were further evaluated in a concentration study. The mean flux of a Koch SelRO MPF 36 and a Microdyn-Nadir NP010 membrane was about 200 l/m2 h during concentration to a volume reduction of 0.75. The retention of NaOH was &lt;20%, while the retention of lignin and sugars was about 70% and &gt;95%, respectively. Cost estimates for a NaOH recovery process indicated that an NF plant would have a pay-back time of less than 2 months if the plant was run continuously, and 7 months if it was used 25% of the time.},
  author       = {Arkell, Anders and Krawczyk, Holger and Thuvander, Johan and Jönsson, Ann-Sofi},
  issn         = {1873-3794},
  language     = {eng},
  pages        = {387--393},
  publisher    = {Elsevier},
  series       = {Separation and Purification Technology},
  title        = {Evaluation of membrane performance and cost estimates during recovery of sodium hydroxide in a hemicellulose extraction process by nanofiltration},
  url          = {http://dx.doi.org/10.1016/j.seppur.2013.07.015},
  doi          = {10.1016/j.seppur.2013.07.015},
  volume       = {118},
  year         = {2013},
}