The major parameter influencing was the temperature for pulp yield, delignification degree, furfural production and enzymatic digestibility.
With a certain operating time and ink coverage, the percentage weight loss of the pulp yield after deinking treatment has been lower by applying electrostatic force.
The best treatment for controlling white mold also increased pulp yield around 1.0 and 7.0 t ha−1 in 2009 and 2010, respectively.
Both individual and within plot heritabilities presented the highest values for number of fruits (0.32 and 0.30, respectively) and pulp mass (0.30 and 0.46, respectively), which favors gains in both yield and pulp yield.
Using a 23 factorial design, the influence of temperature (80 120 °C), time (1 2 h) and NaOH concentration (1.5 3%) on pulp yield in the oxygen stage, chemical composition and physical properties of the pulps obtained was studied.
The pulp yield thus obtained differed by less than 31.3% from the highest possible value; also, the resulting pulp and paper sheets had acceptable properties that differed by less than 21.10% from their optimum values.
We used 41,304 SNP markers and compared pedigree vs. marker-based genetic models by analysing height, diameter, basic density and pulp yield for Eucalyptus urophylla × E.grandis control-pollinated families represented by 949 informative individuals.
Using a face-centered factorial design, it was possible to obtain high quality pulp by the Acetosolv pulping process with the following results: pulp yield 24.5%; 8.2 kappa number and a pulp viscosity of 571 mL/g.
The best result, obtained with a glycerol content of 80%, a reaction time of 150 min and a temperature of 198.3 °C, produced pulps with 54.4% pulp yield, 7.75% residual lignin, 81.4% delignification and 13.7% polyose content.
We considered as independent (experimental) variables: cooking time (60 180 min), acetic acid concentration in the cooking liquor (60 90%) and hydrochloric acid concentration in the cooking liquor (0.20 0.80%); as well as dependent variables: pulp yield, kappa number and viscosity.
Pulp obtained using high ethanolamine and soda concentrations, and high temperature, short cooking time and low liquid solid ratio, exhibits values of the holocellulose, α-cellulose and lignin contents and viscosity which differ by less than 0.8, 3.2, 8.8 and 14.7%, respectively, from the optimum values, and a pulp yield that is only 22.6% lower than the maximum value (52.2%).
