FAIR-CT96-5041 Valorisation du sorgho papetier dans l'industrie papetiere a l'aide de la technologic d'extrusion Bi-Vis. Etude des carateristiques papetieres

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Biocomposites/Boards : FAIR Area 1.3 - Forestry-Wood Chain : FAIR Marie Curie Research Training Grants : Paper/Pulp

Objectives:

Sorghum contains 10 - 20 % of pith in the stalk. The pith is responsible for problems of lower quality of pulp and lower amount of pulp requiring more processing. Processing broom sorghum by extracting pith using the Bi-Vis method developed by the Centre Technique du Papier, allowed the production of pulp that could be used for cardboard. Current solutions require the mechanical extraction of pith using Pallman machines to produce good quality cardboard. During this study a Bi-Vis extrudeur BC 45 was used, allowing for the processing of the entire sorgho resolving the difficulty arising from the extraction of pith.

Activities and Results:

The results delivered by the work produced within Athens Papermill, reached the objectives. It demonstrated that the entire.plant can be used for the fabrication of cardboard paper without the need for extracting pith. Pulp obtained after refining with Sprout-Waldron, is characterised by a similar mechanical resistance as that obtained through the C.T.P. pith extraction method. The economic advantages are considerable compared with existing extraction methods. 0 The output of fibre matter through Bi-Vis is close to 85 %, 0 Energy and the consumption of reagents is lower than with classic methods, 0 Recycling of the extract could minimise the production of unwanted components and reduce the need for reagents

Keywords: Pulp, cardboard, paper, broom, sorghum

Contacts

Scientific Officer

• Anastasios KAPATHANIS / Athens Papermill SA GREECE