Effects of sodium borohydride on peroxide bleaching of Pinus brutia Ten. and wheat straw pulps

Mustafa Çiçekler; Ahmet Tutuş

Makale detayları

Effects of sodium borohydride on peroxide bleaching of Pinus brutia Ten. and wheat straw pulps

Yazarlar:

Mustafa Çiçekler | Ahmet Tutuş

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Mühendislik

Dergi:

Turkish Journal of Forestry Vol.24 Issue 3, pp.323-328

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001300100

pISSN:

2149-3898

Anahtar kelimeler:

Özet:

 The addition of sodium borohydride NaBH4 to peroxide bleaching has been investigated for its effects on the bleaching yield, mechanical and optical properties of Pinus brutia and wheat straw pulps. The pulps were subjected to four different bleaching conditions by adding charges of NaBH4 at 0, 0.5, 1.0, and 1.5, while keeping a constant hydrogen peroxide charge of 7. The use of NaBH4 in the peroxide bleaching processes of the two pulps increased the bleaching yields. The results show that the addition of NaBH4 significantly improved the mechanical properties of the pulps, including tensile and burst indices. The optical properties of the pulps were also improved with the addition of NaBH4. The increase in mechanical and optical properties can be attributed to the reduction of residual hydrogen peroxide and the removal of metal ions, while the decrease in yellowness is due to the removal of metal ions that can cause oxidative degradation of the pulp. The findings of this study suggest that the addition of NaBH4 as an additive in peroxide bleaching is a promising approach to improve the mechanical and optical properties of P. brutia and wheat straw pulps, which can be further explored in future research.

 The addition of sodium borohydride NaBH4 to peroxide bleaching has been investigated for its effects on the bleaching yield, mechanical and optical properties of Pinus brutia and wheat straw pulps. The pulps were subjected to four different bleaching conditions by adding charges of NaBH4 at 0, 0.5, 1.0, and 1.5, while keeping a constant hydrogen peroxide charge of 7. The use of NaBH4 in the peroxide bleaching processes of the two pulps increased the bleaching yields. The results show that the addition of NaBH4 significantly improved the mechanical properties of the pulps, including tensile and burst indices. The optical properties of the pulps were also improved with the addition of NaBH4. The increase in mechanical and optical properties can be attributed to the reduction of residual hydrogen peroxide and the removal of metal ions, while the decrease in yellowness is due to the removal of metal ions that can cause oxidative degradation of the pulp. The findings of this study suggest that the addition of NaBH4 as an additive in peroxide bleaching is a promising approach to improve the mechanical and optical properties of P. brutia and wheat straw pulps, which can be further explored in future research.

 The addition of sodium borohydride NaBH4 to peroxide bleaching has been investigated for its effects on the bleaching yield, mechanical and optical properties of Pinus brutia and wheat straw pulps. The pulps were subjected to four different bleaching conditions by adding charges of NaBH4 at 0, 0.5, 1.0, and 1.5, while keeping a constant hydrogen peroxide charge of 7. The use of NaBH4 in the peroxide bleaching processes of the two pulps increased the bleaching yields. The results show that the addition of NaBH4 significantly improved the mechanical properties of the pulps, including tensile and burst indices. The optical properties of the pulps were also improved with the addition of NaBH4. The increase in mechanical and optical properties can be attributed to the reduction of residual hydrogen peroxide and the removal of metal ions, while the decrease in yellowness is due to the removal of metal ions that can cause oxidative degradation of the pulp. The findings of this study suggest that the addition of NaBH4 as an additive in peroxide bleaching is a promising approach to improve the mechanical and optical properties of P. brutia and wheat straw pulps, which can be further explored in future research.

 Peroksit ağartmasında sodyum borohidrür NaBH4 ilavesinin, kızılçam Pinus brutia ve buğday sapı hamurlarının ağartma verimi, mekanik ve optik özellikleri üzerindeki etkileri araştırılmıştır. Hamurlar, 7lik sabit bir hidrojen peroksit oranında, 0, 0.5, 1.0 ve 1.5 oranlarında NaBH4 eklenerek dört farklı ağartma koşuluna tabi tutulmuştur. Her iki hamur çeşidinin peroksit ağartma işleminde NaBH4 kullanılması ağartma verimini artırmıştır. Ağartma işleminde NaBH4 kullanımı kağıtların kopma ve patlama indisleri dahil olmak üzere hamurların mekanik özelliklerini iyileştirdiğini göstermiştir. NaBH4 ilavesi ile hamurların optik özellikleri de iyileştirilmiştir. Mekanik ve optik özelliklerdeki artış, artık hidrojen peroksitin azalmasına ve metal iyonlarının uzaklaştırılmasına bağlanabilirken, sarılıktaki azalma, hamurun oksidatif bozunmasına neden olabilecek metal iyonlarının uzaklaştırılmasından kaynaklandığı düşünülmektedir. Bu çalışmanın bulguları, peroksit ağartmada bir katkı maddesi olarak NaBH4 eklenmesinin, P. brutia ve buğday sapı hamurlarının mekanik ve optik özelliklerini iyileştirmek için umut verici olduğu sonucuna varılmıştır.

Makale detayları

Effects of sodium borohydride on peroxide bleaching of Pinus brutia Ten. and wheat straw pulps

Yazarlar:

Mustafa Çiçekler | Ahmet Tutuş

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Mühendislik

Dergi:

Turkish Journal of Forestry Vol.24 Issue 3, pp.323-328

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001300100

pISSN:

2149-3898

Peroxide bleaching

Sodium borohydride

Pinus brutia

Wheat strawPeroksit ağartma

Sodyum borhidrür

Pinus brutia

Buğday sapı

Sayı

Makale detayları

Yazarlar: Mustafa Çiçekler | Ahmet Tutuş

Yayıncı: Isparta University of Applied Sciences

Ana Başlıklar: Mühendislik

Dergi: Turkish Journal of Forestry Vol.24 Issue 3, pp.323-328

Belge Tipi: Makale

Yayın Tarihi: 9/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001300100

pISSN: 2149-3898

Sayı

Yazarlar:

Mustafa Çiçekler | Ahmet Tutuş

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Mühendislik

Dergi:

Turkish Journal of Forestry Vol.24 Issue 3, pp.323-328

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001300100

pISSN:

2149-3898