Projektitutkija Jussi Lahti

E-mail: Jussi.Lahti@lut.fi
Mobile phone: +358 50 3268 383

Current Organisation
Separation Science (Superior organisation: LUT School of Engineering Science)

Research Interest
Kraft black liquor, side product of the kraft pulping process, is nowadays mainly burned to recover inorganic cooking chemicals and to produce energy. However, ligneous compounds and hydroxy acids, which are present in black liquor, would be valuable raw material for instance for renewable fuels and materials replacing oil based chemicals. In addition, the separation of lignin from black liquor would reduce the load of the recovery boiler and enable increasing of the capacity of a pulp mill.
Applicability of precipitation and ultrafiltration for separation of lignin from kraft black liquor has been studied since the 70’s. Nevertheless, commercial applications are still rare and knowledge of how to improve separation efficiency is still needed. This study produces novel information on the separation phenomena, which can be utilized in the fractionation of hydroxy acids and lignin from black liquor. In addition, the effect of process conditions and raw materials on separation phenomena and stability of polymeric membranes under extreme conditions prevailing in black liquor treatment are studied to evaluate feasibility on commercial membranes for this application. The results of this study give valuable contribution for the development of wood-based biorefineries.


Research Areas



Publications
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Influence of laccase treatment on fouling layer formation in ultrafiltration of birch hot-water extract (2020)
A1 Journal article (refereed), original research
Virtanen Tiina, Lahti Jussi, Kalliola Anna, et al.
Separation and Purification Technology
Membrane Filtration Enhanced Hydrometallurgical Recovery Process of Indium from Waste LCD Panels (2020)
A1 Journal article (refereed), original research
Lahti Jussi, Vazquez Sergio, Virolainen Sami, et al.
Journal of Sustainable Metallurgy
The interplay role of vanillin, water, and coagulation bath temperature on formation of antifouling polyethersulfone (PES) membranes: Application in wood extract treatment (2019)
A1 Journal article (refereed), original research
Esmaeili Mohammadamin, Lahti Jussi, Virtanen Tiina, et al.
Separation and Purification Technology
Vanillin as an antifouling and hydrophilicity promoter agent in surface modification of polyethersulfone membrane (2019)
A1 Journal article (refereed), original research
Esmaeili Mohammadamin, Virtanen Tiina, Lahti Jussi, et al.
Membranes
Characterization of membrane–foulant interactions with novel combination of Raman spectroscopy, surface plasmon resonance and molecular dynamics simulation (2018)
A1 Journal article (refereed), original research
Virtanen Tiina, Parkkila Petteri, Koivuniemi Artturi, et al.
Separation and Purification Technology
Visual tool for real-time monitoring of membrane fouling via Raman spectroscopy and process model based on principal component analysis (2018)
A1 Journal article (refereed), original research
Virtanen Tiina, Reinikainen Satu-Pia, Lahti Jussi, et al.
Scientific Reports
Effect of extended exposure to alkaline cleaning chemicals on performance of polyamide (PA) nanofiltration membranes (2016)
A1 Journal article (refereed), original research
Kallioinen Mari, Sainio Tuomo, Lahti Jussi, et al.
Separation and Purification Technology
Separation phenomena in UF and NF in the recovery of organic acids from kraft black liquor (2015)
A1 Journal article (refereed), original research
Mänttäri Mika, Lahti Jussi, Hatakka Henry, et al.
Journal of Membrane Science
Purification process for recovering hydroxy acids from soda black liquor (2013)
A1 Journal article (refereed), original research
Hellstén Sanna, Lahti Jussi, Heinonen Jari, et al.
Chemical Engineering Research and Design
Influence of the use of high shear rate module in membrane filtration performance in ultrafiltration of black liquor (2012)
B3 Unrefereed conference proceedings
Lahti Jussi, Kallioinen Mari, Mänttäri Mika
NWBC 2012. The 4th Nordic Wood Biorefinery Conference, Helsinki, Finland, 23–25 October, 2012




Last updated on 2020-01-05 at 05:03

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