DISPLACEMENT WASHING OF KRAFT PULP WITH VARIOUS CONSISTENCY
نویسندگان
چکیده
منابع مشابه
Reactivities of various mediators and laccases with kraft pulp and lignin model compounds.
Laccase-catalyzed oxygen delignification of kraft pulp offers some potential as a replacement for conventional chemical bleaching and has the advantage of requiring much lower pressure and temperature. However, chemical mediators are required for effective delignification by laccase, and their price is currently too high at the dosages required. To date, most studies have employed laccase from ...
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K raft pulp is manufactured in the United States from nearly all commercially availble wood species. About 55 million tons per year are manufactured, 30 million of which are bleached and used mostly for printing and office papers and tissue products. Some kraft pulp is exported, and significant quantities are imported, mostly from Canada and South America. Pulps manufact'xed by sulfite, ...
متن کاملCosts and Benefits of Various Pollution Prevention Technologies in the Kraft Pulp Industry
raft pulp i s manufactured in the United States from nearly all commercially availK ble wood species. About 55 million tons per year are manufactured, 30 million of which are bleached and used mostly for printing and office papers and tissue products. Some kraft pulp is exported, and significant quantities are imported, mostly from Canada and South America. Pulps manufactldred by sulfite, mecha...
متن کاملMathematical Model of Pulp Washing Using Mathematica
Good washing is the key to a successful closure of the water system in a pulp production line. An improved understanding of associated phenomena, particularly those related to the removal of the very last impurities, is therefore desirable. Therefore a mathematical model describing the desorption phenomenon. The system of governing partial differential equations is solved using Mathematica. Mod...
متن کاملMathematical modeling of pulp washing on rotary drums and their numerical solution for various adsorption isotherms
The mechanism of the displacement washing of the bed of pulp fibers is mathematically modeled by the basic material balance equation. Linear as well as non-linear adsorption isotherms are used to describe the relationship between the concentration of the solute in the liquor and concentration of the solute on the fibers. In the present study, the numerical solutions are obtained of pulp washing...
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ژورنال
عنوان ژورنال: Cellulose Chemistry and Technology
سال: 2020
ISSN: 0576-9787,2457-9459
DOI: 10.35812/cellulosechemtechnol.2020.54.91