Biotechnical methods for improvement of energy economy in mechanical pulping

Anne Kallioinen, Jaakko Pere, Matti Siika-aho, Antti Lehtilä, Helena Mälkki, Sanna Syri, Rabbe Thun

Research output: Book/ReportReport

Abstract

Forest industry is a notable user of electric power in Finland. The main reason for this is mechanical pulping, which is very energy intensive. Energy savings in mechanical pulping will also affect indirectly emissions of greenhouse gases (GHG). The aims of the study were to a) study the potential for energy savings and reduction of GHGs by implementation of biotechnical methods in mechanical pulping, b) estimate their cost-efficiency and c) assess the environmental impacts of their adoption into TMP production using the LCA methodology. Two different biotechnical methods were considered, namely fungal pretreatment of chips (biopulping) and enzyme-aided refining, both of which have shown marked potential for energy savings in mechanical pulping. Biopulping has been studied intensively, but without experience in mill scale. Enzyme-aided refining was developed during 1990s in collaborative projects and the method has been succesfully verified in mill scale trials. Cost-efficiency, adoption and effects on emissions of GHGs of the biotehnical methods as compared with other competing technologies were estimated by the EFOM model. Two different scenarios extending to 2030 were used. In the optimistic scenario the new cleaner biotechnologies develop rapidly and they are adopted effectively into use, whereas in the realistic scenario new technologies reducing greenhouse gas emissions penetrate rather slowly into the energy and industrial systems. The results showed that enzyme-aided refining was very competitive as compared with alternative methods and it has a potential of being largely applied in mechanical pulping. Biopulping, which is technically more difficult to control and also more expensive to invest and operate, could be largely adopted according to the optimistic scenario in 2020. It is shown by the LCA study that implementation of the biotechnical methods would reduce total emissions of GHGs. Acidifying emissions from production of bleaching chemicals would, however, increase due a need of extra bleaching for biopulped chips, but the portion of acidifying emissions from the total emissions were assumed to be low. Effects on wastewater loadings arising from the application of biotechnology were not assessed in this study due to lack of relevant data.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages99
ISBN (Electronic)951-38-6127-9
ISBN (Print)951-38-6126-0
Publication statusPublished - 2003
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Meddelanden - Research Notes
Number2183
ISSN1235-0605

Fingerprint

energy
biotechnology
enzyme
bleaching
mill
greenhouse gas
method
economy
cost
environmental impact
wastewater
methodology
refining
energy saving
effect

Keywords

  • pulping industry
  • mechanical pulping
  • energy economy
  • energy conservation
  • pretreatment
  • enzymes
  • fungi
  • environmental impacts
  • emissions
  • life-cycle assessment

Cite this

Kallioinen, A., Pere, J., Siika-aho, M., Lehtilä, A., Mälkki, H., Syri, S., & Thun, R. (2003). Biotechnical methods for improvement of energy economy in mechanical pulping. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 2183
Kallioinen, Anne ; Pere, Jaakko ; Siika-aho, Matti ; Lehtilä, Antti ; Mälkki, Helena ; Syri, Sanna ; Thun, Rabbe. / Biotechnical methods for improvement of energy economy in mechanical pulping. Espoo : VTT Technical Research Centre of Finland, 2003. 99 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2183).
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Kallioinen, A, Pere, J, Siika-aho, M, Lehtilä, A, Mälkki, H, Syri, S & Thun, R 2003, Biotechnical methods for improvement of energy economy in mechanical pulping. VTT Tiedotteita - Meddelanden - Research Notes, no. 2183, VTT Technical Research Centre of Finland, Espoo.

Biotechnical methods for improvement of energy economy in mechanical pulping. / Kallioinen, Anne; Pere, Jaakko; Siika-aho, Matti; Lehtilä, Antti; Mälkki, Helena; Syri, Sanna; Thun, Rabbe.

Espoo : VTT Technical Research Centre of Finland, 2003. 99 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2183).

Research output: Book/ReportReport

TY - BOOK

T1 - Biotechnical methods for improvement of energy economy in mechanical pulping

AU - Kallioinen, Anne

AU - Pere, Jaakko

AU - Siika-aho, Matti

AU - Lehtilä, Antti

AU - Mälkki, Helena

AU - Syri, Sanna

AU - Thun, Rabbe

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N2 - Forest industry is a notable user of electric power in Finland. The main reason for this is mechanical pulping, which is very energy intensive. Energy savings in mechanical pulping will also affect indirectly emissions of greenhouse gases (GHG). The aims of the study were to a) study the potential for energy savings and reduction of GHGs by implementation of biotechnical methods in mechanical pulping, b) estimate their cost-efficiency and c) assess the environmental impacts of their adoption into TMP production using the LCA methodology. Two different biotechnical methods were considered, namely fungal pretreatment of chips (biopulping) and enzyme-aided refining, both of which have shown marked potential for energy savings in mechanical pulping. Biopulping has been studied intensively, but without experience in mill scale. Enzyme-aided refining was developed during 1990s in collaborative projects and the method has been succesfully verified in mill scale trials. Cost-efficiency, adoption and effects on emissions of GHGs of the biotehnical methods as compared with other competing technologies were estimated by the EFOM model. Two different scenarios extending to 2030 were used. In the optimistic scenario the new cleaner biotechnologies develop rapidly and they are adopted effectively into use, whereas in the realistic scenario new technologies reducing greenhouse gas emissions penetrate rather slowly into the energy and industrial systems. The results showed that enzyme-aided refining was very competitive as compared with alternative methods and it has a potential of being largely applied in mechanical pulping. Biopulping, which is technically more difficult to control and also more expensive to invest and operate, could be largely adopted according to the optimistic scenario in 2020. It is shown by the LCA study that implementation of the biotechnical methods would reduce total emissions of GHGs. Acidifying emissions from production of bleaching chemicals would, however, increase due a need of extra bleaching for biopulped chips, but the portion of acidifying emissions from the total emissions were assumed to be low. Effects on wastewater loadings arising from the application of biotechnology were not assessed in this study due to lack of relevant data.

AB - Forest industry is a notable user of electric power in Finland. The main reason for this is mechanical pulping, which is very energy intensive. Energy savings in mechanical pulping will also affect indirectly emissions of greenhouse gases (GHG). The aims of the study were to a) study the potential for energy savings and reduction of GHGs by implementation of biotechnical methods in mechanical pulping, b) estimate their cost-efficiency and c) assess the environmental impacts of their adoption into TMP production using the LCA methodology. Two different biotechnical methods were considered, namely fungal pretreatment of chips (biopulping) and enzyme-aided refining, both of which have shown marked potential for energy savings in mechanical pulping. Biopulping has been studied intensively, but without experience in mill scale. Enzyme-aided refining was developed during 1990s in collaborative projects and the method has been succesfully verified in mill scale trials. Cost-efficiency, adoption and effects on emissions of GHGs of the biotehnical methods as compared with other competing technologies were estimated by the EFOM model. Two different scenarios extending to 2030 were used. In the optimistic scenario the new cleaner biotechnologies develop rapidly and they are adopted effectively into use, whereas in the realistic scenario new technologies reducing greenhouse gas emissions penetrate rather slowly into the energy and industrial systems. The results showed that enzyme-aided refining was very competitive as compared with alternative methods and it has a potential of being largely applied in mechanical pulping. Biopulping, which is technically more difficult to control and also more expensive to invest and operate, could be largely adopted according to the optimistic scenario in 2020. It is shown by the LCA study that implementation of the biotechnical methods would reduce total emissions of GHGs. Acidifying emissions from production of bleaching chemicals would, however, increase due a need of extra bleaching for biopulped chips, but the portion of acidifying emissions from the total emissions were assumed to be low. Effects on wastewater loadings arising from the application of biotechnology were not assessed in this study due to lack of relevant data.

KW - pulping industry

KW - mechanical pulping

KW - energy economy

KW - energy conservation

KW - pretreatment

KW - enzymes

KW - fungi

KW - environmental impacts

KW - emissions

KW - life-cycle assessment

M3 - Report

SN - 951-38-6126-0

T3 - VTT Tiedotteita - Meddelanden - Research Notes

BT - Biotechnical methods for improvement of energy economy in mechanical pulping

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Kallioinen A, Pere J, Siika-aho M, Lehtilä A, Mälkki H, Syri S et al. Biotechnical methods for improvement of energy economy in mechanical pulping. Espoo: VTT Technical Research Centre of Finland, 2003. 99 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2183).