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Responsible investigator

2008

Research, modeling, implementation of energy use permanently renewable lignocellulose resources

APVV-0131-07

Ing. Neuschlová,CSc.

Project was solved in cooperation with

• National wood center in Zvolen
• Slovak agriculture university in Nitra
• Research centrum for plant production in Piestany, filed Office Krivá na Orave

Aims of project

From biological point of view is solving diversification problem of energy resources (trees and plants) with the possibility of their cultivation  to erosion threatened and contaminated soils. From technical point of view is solves capacity utilization of the secondary wood materials (sawdust, wood chips) to – produce pellets (line for pellet production) – heat and electricity production (technological equipment for heat production and electricity production, cogeneration unit), not missing calculations on ROI (return of investment) and economic benefits.

Outputs from project:Through the project solutions have been obtained the information’s about the production process of  8 Swedish energy plants varieties of fast-growing willow (Salip sp.) skills and knowledge of biomass energy in four herbs (castor bean, sorghum – Hyso, Miscantus Chinese) in terms  of southern.  The highest rate of growth throughout the three-year experimental period had  a  variety Tordis, Gudrun, Tora, Sherwood. Highest growth of biomass  provided   varieties of Tordis and Godrun.  Calorific  values moved from 19,4 – 20,01MJ.kg-1 dry weight and calorific value from

18,1 – 18,7 MJ.kg-1.  

Energy production potential kind of poplar clones Robusta was quantify and Robusta and I-214 and derive the optical maturity of their ages Rotation crops for biomass energy production. Optimal rotation ages of maturity were determined according to the age of culmination of the overall average increase of value of productions of raw assortments of woods and production  of  tinning’s with possible use for energy purposes. For clone Robusta and standing crops 20-42 is in  age of 35-23years and clone I-214 and its prosperous range of 20-46is in age 32-18. Clone I-214 has a gross maturity Rotation in about 3 years earlier than Robusta.

Technology proposal was developed for secondary processing of wood material from production activities (chips, sawdust..) to – produce pellets (line for pellet production), - heat and energy production (technological equipment for heat and energy production), with calculations on ROI (return of investment) and economic benefits too.

2 x interim report, 1 x final report, publications types ADD (1 x), AEC (2 x), AEF (5 x), dissemination activities 14 x, 2 thesis, further continued, 3 completed and 2 continuing PhD work, created partnership with Dalkia, a.s. and Bio Salix Energy, s.r.o., proven technology 3 x, new product 1 x, 2 proposals of treatment standards (Agricultural sector), promoting project through posters on the Agrokomplex agri-food fair.

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2008

Model of managing strength properties of bleached sulfate  pulp in manufacture process and processing

APVV-0338-07

Ing. Fišerová. PhD.

Period of project solution:09/2008-12/2010

Aims of project:The results for project solution are two models for managing strength properties of sulfate pulp in cooking process and the process of oxygen delignification, which have the greatest impact on the strength properties of sulfate pulp. The aim is to maintain the highest strength potential of raw material. Model for sulfate cooking process is predicting  index of breakage, index of tearing, index of bursting strength and  stiffness of non-bleached craft pulp based in pursuance of  cooking temperature, consumption of effective alkali, sulphide of white liquor, H-factor, overall time of cooking operation and humidity of chips. For control of strength properties of bleached sulfate pulp was created model, in which are an input data as on  the oxygen delignification process parameters: kappa number in input and output, temperature in top and low 2^nd reactor, oxygen consumption, consumption NaOH and white liquor. Combination FT and NIR spectroscopy and chemo-metric methods was proposed on on-line monitoring representing species of leafy wood in operation chips and quick determination of strength properties in sulfur pulp with use of calibration models.

Outputs from project:Software products for managing strength properties of sulfate pulp are used in order to increasecompetitiveness. The results were published in 4 publications in CC journals and 4 publications in reviewed magazines.

Name of project

Responsible investigator

2008

APVV-0320-07

Ing. Balberčák

Period of project solution:06/2008-12/2010

Aims of project:Decreasing specific energy consumption in paper production of 10%, reaching level of western Europe companies and eliminating competitive disadvantage in field of energy consumption.

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2008

Model  prediction  of  qualitative paper characteristics

APVV-0340-07

Ing. Gigac, PhD.

Doba riešenia projektu: 07/2008-12/2010

Period of project solution:07/2008-12/2010

Aims of project: Develop a model for prediction of  qualitative paper characteristics in technological processes of production in order to increase and regularize quality of paper products by mixture and adjusting technological conditions and starting materials. Model will be oriented on quality of paper for corrugated and covering layer of corrugated cardboard.

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2009

New processes and materials in preparation of fiberboards

Period of project solution: 06/2009

APVV-0255-06

Ing. Lubke

Aims of project:Research refining the wood fiber of enzymatically modifieddifiber pulp. Technology preparation of DVDN by using enzymatically modified fiber. Technology preparation of DVDN by processing secondary raw materials. Research of properties of fiber and prepared DVND from secondary LC raw materials.  Reducing material and energy costs for DVDN production.

1.The Technology production of insulation fiberboards (DVDN) containing straw pulp. Using the proposed technology will prepare DVDN with use of 10% to 50% of straw pulp. According to the referred technology will be DVDN produced  with following technical parameters: the density of 250kg/m3, bending strength – min. 0,8Pa, tensile strength perpendicular  to the plane of the board – min. 50kPa, swelling (2hours) – 5%, water absorption (2hours) – max. 15%. Economic parameters of product – preparation costs of pulp mixture 

containing 30% straw fiber – 87,47EUR (2,,635.-Sk). Total costs savings to produce  1 ton of pulp mixture  compare with the costs of  1ton of wood fiber is 11,53EUR (347,35Kč).

2.The production technology of  insulating fiberboards (DVDN) contain abrasive fiber. Proposal of technology to prepare DVDN with  fiber content after grinding is limited from  the negative impact of this fiber in DVDN on their properties. It was noted, that from DVDN properties point of view is 5% addition of abrasive fiber in DVDN production bearable. 5% addition of abrasive fibers reduces bending strength by 7%, internal bound by 6%, swelling and water assortment worsened by 6,4% and by 4,9% even though obtain properties

meet requirements for DVDN with density 250kg/m3. Product economic parameters – costs will reduce for 1ton of pulpwood with 5% abrasive fiber  by 2.05EUR (61,75Sk) in spruce wood and by 26,06kWh/t, which is in overall financial statement  4,95EUR (149,2Sk).

3.Other results of applied research – research refining in wood fiber.  New adjustments in technology were recommended for wood fiber production to achieve higher quality and lower energy consumption. Enzymatic modification of wood fiber. It has been stated, that enzymatic modification of wood fiber cannot be use under the conditions of production for differences  in heating and timing  production parameters and parameters required for enzyme activity.

Partial outputs from projects:

Lübke H., Borůvka V., Babiak M: Fibers of secondary ligno-cellulose materials and their influence on the properties of insulating fiberboards. Drvna Industrija, Zagreb, 59(4), p.157-162 (2008)

Babiak,M.et al.: Thermal Properties of Wood and Their Measurement                    In: 9th Pacific Rim Bio-Based Composites Symposium “Innovation and Challenges in Bio-based Composites – How Far to the New Frontier?” 5th - 8th November 2008, Rotorua, New Zealand,  Poster. p.335-340.

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Responsible investigator

2006

Effect of beep pulp on the structure and binding potential paper

APVV-99-007405

Ing. Mária Fišerová, PhD.

Duration of project:06/2006-12/2008

Period of project solution: Clarify the effect of hydro-mechanical  forces of  on the internal and external fibrillation and by shortening fibers for optimal method of modification of beet pulp and their use for increasing the binding strength of paper. Adding original, enzymatically and chemically modified beet pulp with primary and recycled fibers increasing the parameters  characterizing   internal and external fibrillation and shortens fibers analogous like the  milling process.  In the  similar delivering to the paper had  the biggest impact on the transmitting and strength  parameters the enzymatically modified  beet pulp, which are the  fiber residues after the isolating  of L-arabinóza. Chemically modified  beet pulp which is the  leftover from isolation of pectin from  beet pulp, had one third of less impact than enzymatically modified, while the original beet pulp had two thirds of less impact. Recommending delivery into the  paper is about 15-20% of original  beet pulp, 10-15% of chemically modified and 5-10% of enzymatically modified beet pulp. Referred delivery increased the bursting strength and CMT 30 by 10-15%.

Outputs from  project:Extending theoretical knowledge in the field of increasing internal binding strength of paper and reviewing  original, enzymatically and chemically modified sugar beet pulp in wooden papers, paper boards and  fiberboard. The results were published in 14 publication in CC journals and 5 publications in reviewed magazines. 

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2006

Surface modification of primary and recycled fibers 

APVV-99-004005

Ing. Gigac, PhD.

Duration of project: 05/2006 – 12/2007

Goals of project: Reducing delivery of semi pulp in the  paper production on the packaging materials and maintain quality of parameters. Reducing delivery of long fiber pulp  in the manufacture of tissue paper and maintain  quality  parameters.  

Reducing production costs of packaging and sanitary materials. The aim of basic research in bleaching of waste paper will be to monitor acting of enzymes on the surface of papers with printing offset colors and on the effectiveness of cleaning process through  flotation and washing.

Outputs of projects:Confirmed production technology of packaging and sanitary papers (4). Publications and citations of SCI in CC journals – foreign (2). Number of scientific work published in non-reviewed professional journals and miscellaneous. Foreign (1). Number of scientific work published in not-reviewed professional magazines and   miscellaneous in Slovakia (3). Induced R*D projects which are  directly linked to solving project and were presented in the Slovakia in to APVV (1).