Abstract
Lignin is the mass waste product of pulp and paper industry mostly incinerated for energy recovery. Lignin is, however, a substantial source of raw material for derivatives currently produced in costly wet oxidation processes. The pulsed corona discharge (PCD) for the first time was applied to lignin oxidation aiming a cost-effective environmentally friendly lignin removal and transformation to aldehydes. The experimental research into treatment of coniferous kraft lignin aqueous solutions was undertaken to establish the dependence of lignin oxidation and aldehyde formation on the discharge parameters, initial concentration of lignin and gas phase composition. The rate and the energy efficiency of lignin oxidation increased with increasing oxygen concentration reaching up to 82 g kW-1 h-1 in 89% vol. oxygen. Oxidation energy efficiency in PCD treatment exceeds the one for conventional ozonation by the factor of two under the experimental conditions. Oxidation at low oxygen concentrations showed a tendency of the increasing aldehydes and glyoxylic acid formation yield.
| Original language | English |
|---|---|
| Title of host publication | Environmental technology |
| Pages | 171-176 |
| Number of pages | 6 |
| Volume | 35 |
| Edition | 1-4 |
| Publication status | Published - 2014 |
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ASJC Scopus subject areas
- Environmental Chemistry
- Waste Management and Disposal
- Water Science and Technology
Cite this
Pulsed corona discharge oxidation of aqueous lignin : decomposition and aldehydes formation. / Panorel, Iris; Kaijanen, Laura; Kornev, Iakov; Preis, Sergey; Louhi-Kultanen, Marjatta; Sirén, Heli.
Environmental technology. Vol. 35 1-4. ed. 2014. p. 171-176.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Pulsed corona discharge oxidation of aqueous lignin
T2 - decomposition and aldehydes formation.
AU - Panorel, Iris
AU - Kaijanen, Laura
AU - Kornev, Iakov
AU - Preis, Sergey
AU - Louhi-Kultanen, Marjatta
AU - Sirén, Heli
PY - 2014
Y1 - 2014
N2 - Lignin is the mass waste product of pulp and paper industry mostly incinerated for energy recovery. Lignin is, however, a substantial source of raw material for derivatives currently produced in costly wet oxidation processes. The pulsed corona discharge (PCD) for the first time was applied to lignin oxidation aiming a cost-effective environmentally friendly lignin removal and transformation to aldehydes. The experimental research into treatment of coniferous kraft lignin aqueous solutions was undertaken to establish the dependence of lignin oxidation and aldehyde formation on the discharge parameters, initial concentration of lignin and gas phase composition. The rate and the energy efficiency of lignin oxidation increased with increasing oxygen concentration reaching up to 82 g kW-1 h-1 in 89% vol. oxygen. Oxidation energy efficiency in PCD treatment exceeds the one for conventional ozonation by the factor of two under the experimental conditions. Oxidation at low oxygen concentrations showed a tendency of the increasing aldehydes and glyoxylic acid formation yield.
AB - Lignin is the mass waste product of pulp and paper industry mostly incinerated for energy recovery. Lignin is, however, a substantial source of raw material for derivatives currently produced in costly wet oxidation processes. The pulsed corona discharge (PCD) for the first time was applied to lignin oxidation aiming a cost-effective environmentally friendly lignin removal and transformation to aldehydes. The experimental research into treatment of coniferous kraft lignin aqueous solutions was undertaken to establish the dependence of lignin oxidation and aldehyde formation on the discharge parameters, initial concentration of lignin and gas phase composition. The rate and the energy efficiency of lignin oxidation increased with increasing oxygen concentration reaching up to 82 g kW-1 h-1 in 89% vol. oxygen. Oxidation energy efficiency in PCD treatment exceeds the one for conventional ozonation by the factor of two under the experimental conditions. Oxidation at low oxygen concentrations showed a tendency of the increasing aldehydes and glyoxylic acid formation yield.
UR - http://www.scopus.com/inward/record.url?scp=84894275775&partnerID=8YFLogxK
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M3 - Chapter
VL - 35
SP - 171
EP - 176
BT - Environmental technology
ER -