Oxygen Delignification of Wheat Straw Organosolv Pulp

Hüseyin KIRCI; Mustafa USTA

Makale detayları

Oxygen Delignification of Wheat Straw Organosolv Pulp

Yazarlar:

Hüseyin KIRCI | Mustafa USTA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2000 Vol.24 Issue 6, pp.757-765

Belge Tipi:

Makale

Yayın Tarihi:

5/2000

Belge Dili:

Türkçe

Document ID (Org No.):

2000809715

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

Anahtar kelimeler:

Özet:

 

In this study, in order to determine optimum conditions for peroxide reinforced oxygen delignification of wheat straw  organosolv pulps, five experiments were carried out changing the alkali ratio, peroxide charge and reaction time. After the statistical  evaluations of the data obtained, optimum delignification conditions were found to be as follows: NaOH ratio 6%, H2O2 ratio 2.5%,  reaction temperature 80 oC, reaction time 60 min., oxygen pressure 10 kg/cm2 , concentration 16%. Thus; yield, viscosity and tear  index of wheat straw organosolv pulps delignificated with oxygen added peroxide decreased by 18%, 20% and 18% respectively.  In addition, residual lignin content of delignified pulp decreased by 60% and brightness, breaking length and burst index of the pulp  were found to be respectively 65%, 10% and 52% higher than those of non-delignificated wheat straw organosolv pulps.  Consequently, it is concluded that oxygen delignified organosolv pulp has similar strength properties except brightness compared  with wheat straw alkaline (soda, soda-oxygen and kraft) pulps.

 

In this study, in order to determine optimum conditions for peroxide reinforced oxygen delignification of wheat straw  organosolv pulps, five experiments were carried out changing the alkali ratio, peroxide charge and reaction time. After the statistical  evaluations of the data obtained, optimum delignification conditions were found to be as follows: NaOH ratio 6%, H2O2 ratio 2.5%,  reaction temperature 80 oC, reaction time 60 min., oxygen pressure 10 kg/cm2 , concentration 16%. Thus; yield, viscosity and tear  index of wheat straw organosolv pulps delignificated with oxygen added peroxide decreased by 18%, 20% and 18% respectively.  In addition, residual lignin content of delignified pulp decreased by 60% and brightness, breaking length and burst index of the pulp  were found to be respectively 65%, 10% and 52% higher than those of non-delignificated wheat straw organosolv pulps.  Consequently, it is concluded that oxygen delignified organosolv pulp has similar strength properties except brightness compared  with wheat straw alkaline (soda, soda-oxygen and kraft) pulps.

Makale detayları

Oxygen Delignification of Wheat Straw Organosolv Pulp

Yazarlar:

Hüseyin KIRCI | Mustafa USTA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2000 Vol.24 Issue 6, pp.757-765

Belge Tipi:

Makale

Yayın Tarihi:

5/2000

Belge Dili:

Türkçe

Document ID (Org No.):

2000809715

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

Oxygen Delignification

Wheat Straw

Bleaching

Organosolv Pulping

Sayı

Makale detayları

Oxygen Delignification of Wheat Straw Organosolv Pulp

Yazarlar: Hüseyin KIRCI | Mustafa USTA

Yayıncı: TUBITAK

Dergi: Turkish Journal of Agriculture and Forestry 2000 Vol.24 Issue 6, pp.757-765

Belge Tipi: Makale

Yayın Tarihi: 5/2000

Belge Dili: Türkçe

Document ID (Org No.): 2000809715

Sıklık: İki Aylık

eISSN: 1303-6173

pISSN: 1300-011X

Oxygen Delignification

Wheat Straw

Bleaching

Organosolv Pulping

Sayı

Yazarlar:

Hüseyin KIRCI | Mustafa USTA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2000 Vol.24 Issue 6, pp.757-765

Belge Tipi:

Makale

Yayın Tarihi:

5/2000

Belge Dili:

Türkçe

Document ID (Org No.):

2000809715

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X