Hemp fibre as a raw material for paper production in the aspect of natural environment protection.
1995
Baraniecki P. | Mankowski J.
Oil and fibre flax and hemp plants were cultivated in strongly devastated landscape in the region of mining and processing of copper ore. It was confirmed that cultivation of these crops reduced soil content of copper, zinc, cadmium and lead in some cases. These metals are absorbed by crops and are deposited particularly in their roots and seed and to a smaller extent in stems. The yields of stems and seeds are not considerably affected by cultivation of above crops in disturbed natural conditions. These results show that mentioned technical crops should be used for reclamation of soil contaminated by heavy metals with further utilization of biomass produced in the paper industry. Laboratory experiments with its defibring and bleaching of pulp show advantages compared with wood: higher yielding capacity of pulp from fibre (roughly 70 %) and three to four times lower consumption of alkali than in defibring compared with wood. Disadvantages of pulp from hemp fibre are in more difficult dehydration ability, more difficult disintegration of fibre and bleaching.
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