Organosolv Pulping of Paraserianthes Falcataria
The potential of organosolv pulping using Paraserianthes falcataria as a raw material was studied. organosolv pulping was carried out under 2 conditions of catalyst addition - 75% ethanol plus 0.05 M CaCl₂; and 75 % ethanol plus 0.10 M CaCI2; and without catalyst - 75 % ethanol only. The result...
| Main Author: | |
|---|---|
| Format: | Project Paper Report |
| Language: | English English |
| Published: |
1990
|
| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/9848/ http://psasir.upm.edu.my/id/eprint/9848/1/FH_1990_2_A.pdf |
| Summary: | The potential of organosolv pulping using Paraserianthes
falcataria as a raw material was studied. organosolv pulping
was carried out under 2 conditions of catalyst addition
- 75% ethanol plus 0.05 M CaCl₂; and 75 % ethanol plus 0.10 M
CaCI2; and without catalyst - 75 % ethanol only.
The results indicated that without catalyst, organosolv
pulping was incapable of reducing cooking chips into pulp.
Catalyzed organosolv pulping at 0.05 M CaCl₂ produced pulp
with screened yield of 45.31% and 46.67% for the 0.10 M
CaCl₂ condition. These yields were slightly lower than
the 48.56 % of kraft. The brightness of the unbleached pulps
were 16.8 % and 15.9 % for organosolv pulping with 0.05 M
and 0.10 M CaCl₂ conditions, respectively. These pulps were
generally darker than the kraft pulp which had a brightness
of 31.6 %. The strength properties i.e., burst, tear,
tensile, stretch, and folding endurance of the two catalyzed
organosolv pulps were very low compared to that of kraft pulp
control. The total solids recovered from the black liquor of
uncatalyzed organosolv process was 4.72 % while the catalyzed
organosolv pulping were 7.0 % for 0.05 M CaCl₂ condition and
7.1 % for 0.10 M CaCl₂ condition. |
|---|