Nitrate-Alkaline Pulp from Non-Wood Plants

Abstract

Because there is a lack of wood resources in many countries, this work focused on pulp and paper production from the waste and agricultural residues of non-wood plants. The work aimed to pulp the nitrate-alkaline of black mustard (Brassica Nigra L.) and camelina (Camelina Sativa L.). The black mustard and the camelina were selected due to the expanding planted areas of these crops in the Czech Republic. To characterize the chemical composition of black mustard and camelina, cellulose, lignin, ash, and extractives were determined. Raw alpha-cellulose, beta-cellulose, and gamma-cellulose were also measured. The results showed that the content of lignin in non-wood plants is lower than that in softwoods. The cooked pulp was characterized by the delignification degree–Kappa number. Additionally, handsheet papers were made for selected samples of pulp. The handsheet papers were characterized by tensile index, breaking length, and smoothness and compared with commonly available papers.

Nitric acid-alkali two-stage pulping of wheat straw, industrial hemp, and Miscanthus x giganteus

“…PFRM [(black mustard (Brassica nigra L.) and camelina (Camelina sativa L.)], i.e., approximately 127% to the o.d. PFRM (concentration of HNO3 solution of 6%, with a cooking liquor-to-PFRM ratio of 20:1), were used by Hájkova et al (2021).…”