This paper wi
ll consider the inf
luence of the autohydro
lysis pretreatment on
Paulownia fortunei L. woods toobtain a
liquid phase (which can be used as a commercia
l source of organic reagents) and a
lso a so
lid phase(which is va
luab
le as raw materia
l for pu
lping processes). Moreover, the inf
luence of the operating conditions-viz., ethano
l concentration (20%-60%), temperature (150-180
C), and pu
lping time (30-90 min)-on theorganoso
lv pu
lping (the initia
l liquor-to-so
lid ratio was 8:1, with 10% of soda and 0.5% of anthraquinone) ofthe obtained
Paulownia fortunei L. so
lid after the autohydro
lysis process has been considered to determinethe best pu
lping conditions and characteristics of the so
lid phase. In that form, the yie
ld, kappa number,g
lucan and
lignin contents, and tensi
le index va
lues of the resu
lting pu
lps and paper sheets have been studied.The optimum of so
lubi
lized components has been obtained at 190
C (0.92 g/L g
lucose, 1.61 g/L xy
lose,0.60 g/L arabinose, 0.93 g/L acetic acid, 0.047 g/L 5-hydroxymethy
lfurfura
l, 0.141 g/L furfura
l, and 14.66g/L o
ligomers). Under these conditions, a suitab
le chemica
l composition of pu
lps and acceptab
le yie
ld (38%),kappa number (45), and tensi
le index (28.87 N m/g) cou
ld be obtained through operation at high temperature(180
C), short pu
lping time (30 min), and
low ethano
l concentration (20%).