Galactoglucomannan Recovery with Hydrophilic and Hydrophobic Membranes: Process Performance and Cost Estimations
Al-Rudainy, Basel LU ; Galbe, Mats LU ; Lipnizki, Frank LU
and Wallberg, Ola
LU
(2019)
In Membranes
9(8).
- Abstract
- In this study, we compared the GR51PP (hydrophobic/polysulfone) membrane with a series of hydrophilic (regenerated cellulose) membranes with the aim of increasing the retention of products and decreasing membrane fouling. The raw material used was a sodium-based spent sulfite liquor from the sulfite pulping process of spruce and pine. The results show that the hydrophilic membranes were superior to the hydrophobic membranes in terms of higher fluxes (up to twice the magnitude), higher product retentions and less fouling (up to five times lower fouling). The fouling was probably caused by pore blocking as observed in earlier studies. However, the hydrophilic membranes had a lower affinity for lignin, which was indicated by the lower... (More)
- In this study, we compared the GR51PP (hydrophobic/polysulfone) membrane with a series of hydrophilic (regenerated cellulose) membranes with the aim of increasing the retention of products and decreasing membrane fouling. The raw material used was a sodium-based spent sulfite liquor from the sulfite pulping process of spruce and pine. The results show that the hydrophilic membranes were superior to the hydrophobic membranes in terms of higher fluxes (up to twice the magnitude), higher product retentions and less fouling (up to five times lower fouling). The fouling was probably caused by pore blocking as observed in earlier studies. However, the hydrophilic membranes had a lower affinity for lignin, which was indicated by the lower retention and fouling. This also resulted in a separation degree, which was higher compared with the hydrophobic membrane, thus yielding a higher galactoglucomannan (GGM) purity. 2D HSQC NMR results show that no major structural differences were present in the hydrophilic and hydrophobic retentates. A techno-economical evaluation resulted in the RC70PP being chosen as the most cost-efficient membrane in terms of flux and product recovery. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/ca91a25d-ebf3-4129-8986-d04c20842ce6
- author
- Al-Rudainy, Basel
LU
; Galbe, Mats
LU
; Lipnizki, Frank
LU
and Wallberg, Ola
LU
- organization
- publishing date
- 2019-08-10
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- galactoglucomannan, lignin, lignin-carbohydrate-complex, lignosulfonates, ultrafiltration, fouling, Cost estimations
- in
- Membranes
- volume
- 9
- issue
- 8
- article number
- 99
- pages
- 16 pages
- publisher
- MDPI AG
- external identifiers
-
- scopus:85071423528
- pmid:31405130
- ISSN
- 2077-0375
- DOI
- 10.3390/membranes9080099
- project
- Isolation of hemicelluloses from spent-sulfite-liquor
- language
- English
- LU publication?
- yes
- id
- ca91a25d-ebf3-4129-8986-d04c20842ce6
- date added to LUP
- 2019-08-13 09:57:09
- date last changed
- 2023-12-03 22:07:40
@article{ca91a25d-ebf3-4129-8986-d04c20842ce6,
abstract = {{In this study, we compared the GR51PP (hydrophobic/polysulfone) membrane with a series of hydrophilic (regenerated cellulose) membranes with the aim of increasing the retention of products and decreasing membrane fouling. The raw material used was a sodium-based spent sulfite liquor from the sulfite pulping process of spruce and pine. The results show that the hydrophilic membranes were superior to the hydrophobic membranes in terms of higher fluxes (up to twice the magnitude), higher product retentions and less fouling (up to five times lower fouling). The fouling was probably caused by pore blocking as observed in earlier studies. However, the hydrophilic membranes had a lower affinity for lignin, which was indicated by the lower retention and fouling. This also resulted in a separation degree, which was higher compared with the hydrophobic membrane, thus yielding a higher galactoglucomannan (GGM) purity. 2D HSQC NMR results show that no major structural differences were present in the hydrophilic and hydrophobic retentates. A techno-economical evaluation resulted in the RC70PP being chosen as the most cost-efficient membrane in terms of flux and product recovery.}},
author = {{Al-Rudainy, Basel and Galbe, Mats and Lipnizki, Frank and Wallberg, Ola}},
issn = {{2077-0375}},
keywords = {{galactoglucomannan; lignin; lignin-carbohydrate-complex; lignosulfonates; ultrafiltration; fouling; Cost estimations}},
language = {{eng}},
month = {{08}},
number = {{8}},
publisher = {{MDPI AG}},
series = {{Membranes}},
title = {{Galactoglucomannan Recovery with Hydrophilic and Hydrophobic Membranes: Process Performance and Cost Estimations}},
url = {{http://dx.doi.org/10.3390/membranes9080099}},
doi = {{10.3390/membranes9080099}},
volume = {{9}},
year = {{2019}},
}