Kenaf bio-chemical pulping

U.S. Department of Agriculture Forest Products Laboratory researchers tested white rot fungi for kenaf treatment and Phybis Subserialis for treatment of hemp bast fibers, followed by kraft pulping, and evaluation of DED, DEDED, and DEDP multistage bleaching The bleachability of kenaf pulp. The mechanical strength properties of kenaf stalk kraft pulp treated with white rot fungi are equivalent to that of the reference kenaf stalk kraft pulp, and treated with PS bacteria after the treatment of kenaf bast fiber and white rot fungi. Compared with the reference sulphate pulp, the stalk pulp of the whole stalk shows that the tear strength value of the pulp is high, and the yield of bio-monosulfate hemp bast fiber pulp is 42%-44% and the Kappa number is 17- 22, and the yield of the ramie bast fiber bio-sulphate pulp is 50%-52% and Kappa number 12-14, using DED three-stage bleaching or DEDP four-stage bleaching, two bio-sulphate pulp white The degrees are 86%-88% and 78%-81% respectively. The kenaf bio-kraft pulp requires less chemicals than the softwood kraft pulp in the bleaching process, and the mechanical strength properties of the kraft bast bio-kraft pulp are similar to those of the coniferous kraft pulp. Better than hardwood kraft pulp.