tiket kereta toko bagus berita bola terkini anton nb Aneka Kreasi Resep Masakan Indonesia resep masakan menghilangkan jerawat villa di puncak recepten berita harian game online hp dijual windows gadget jual console voucher online gosip terbaru berita terbaru windows gadget toko game cerita horor

Effect of Hot-water and mild alkaline Extraction on Soda-AQ pulping of wheat straw

fereshteh fadavi, hossein resalati, hossein kermanian, mokhtar feizmand


Up to now numerous wood treatments have been conducted mostly in the form of pre-hydrolysis of wood focusing on hemicelluloses pre-extraction for co-production of pulp and chemicals. Our objective in this research was to investigate the effect of hot-water and green liquor pre-extraction of wheat straw on cooking process and papermaking properties of soda-AQ pulp. Wheat straw chips were treated with pure water and green liquor at 140 and 150 °C, respectively, to obtain two levels of pre-extraction weight losses of about 10 and 15 %, in any extraction methods. The pre-extracted straw required less H-factor to cook to the target kappa number of about 20, but required reduced PFI mill refining revolutions. The strength indices of hot-water pre-extracted pulps at both levels of pre-extracted weight losses, and of green liquor pre-extracted pulp only at 10%, were comparable to those of control pulp, except for tear index. 


Full Text: PDF


  • There are currently no refbacks.