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Qualifying novel bio-based materials for the market: EHS, sustainability and beyond, TAPPICon25

Advancing Decarbonization in Pulp and Paper Manufacturing: A Cell-Free Enzyme Process for Enhanced Dewatering and Drying, TAPICon25

Evaporator Train Heat and Material Balance Development for Use as a Troubleshooting Tool, TAPPICon25

Effect Of Xylan Deposition Onto Eucalypt Kraft, TAPPICon25

Full-Scale Operation of a Membrane-Based Black Liquor Concentrator, TAPPICon25

Fibre Loss in Recycle Paper Mills: A methodology to quantify in main reject streams and overall fibre balance, TAPPICon25

Caliper Variation Reduction and Fiber Savings from Improved Calender Roll Tolerances, TAPPICon25

Improving Barrier Performance of Coated Paper and Paperboard Using Multi-Layer Approach, TAPPICon25

Functional Lignin-Based Barrier Coatings for Paper Packaging, TAPPICon25

Co-pulping of Trewia nudiflora and Trema orientalis, TAPPI Journal June 2023

ABSTRACT: Trewia nudiflora, a fast-growing species, was evaluated as a pulpwood. The a-cellulose content of this species was 40.4% with a Klason lignin of 21.5%. It was characterized by shorter fibers with a thin cell wall. The pulp yield was 40% with a kappa number of 16 at the conditions of 18% active alkali charge and 30% sulfidity for 2 h cooking at 170°C. T. nudiflora was similar to Trema orientalis in anatomical, morphological, and chemical composition; therefore, mixed chips at a 50:50 mixture ratio were cooked under optimum conditions. The pulp yield of mixed chip cooking was 45.4% with a kappa number of 19.4. The tensile and tear index of T. nudiflora pulps were 64.8 Nœm/g and 11.5 kPaœm2/g at 35 °SR, respectively. The mixed chips, T. nudiflora, and T. orientalis pulps showed above 81% brightness when bleached by D0(EP)D1 sequence using 20 kg chlorine dioxide (ClO2)/ton of pulp.