In traditional pulping, black liquor is burned in an alkali recovery system to produce energy. According the integrated forest biorefinery (IFBR) concept, hemicellulose partially pre-extracted prior pulp production generate value-added products. Corn stalks have a remarkable carbohydrate content (75% w/w), and thus were examined this study terms of IFBR concept. The hemicelluloses with hot wate...

Lignin is a precursor of humus, and by-product the pulp paper industry. This study investigated synthesis soil conditioning materials from industrial lignins (kraft, soda sulphite), through ammoxidation. The were characterized ammoxidized in 1 L Parr reactor at 80 °C, 10 barg, for 4 h, with 7 wt% ammonia lignin reaction mixture. A plant trial assessment products was conducted over four weeks. N...

the properties of alkaline sulfite anthraquinone (as/aq) pulp from old corrugated container (occ)was studied. in each trial 100 grams (based on dry weigth) of occ and 18% active alkali was used.three levels of anthraquinone (0.0.1 and 0.2% based on dry weigth of the occ) and two pulpingtimes (120 and 150 minutes at maximum pulping temperature) were applied. pulping temperature,na2so3/naoh ratio...

This study was devoted to the development of pulp Luffa Cclindrica and its characterization paper (annual plant fiber of the family Cucurbitaceae). Baking at soda helps to achieve a high level of delignification (Kappa ≤ 10) and high yield (≈ 67%).The beatability stack Valley is comparable to refined wood fibers, the fibers develop a normally time with good hydrophilic pro...

With currently practiced technology, lignin is either incinerated in the recovery cycle of pulping or wasted in wastewater treatment systems, resulting in its underutilization. However, lignin can be converted to valueadded products. In this work, the copolymerization of soda lignin (SL) and acrylamide (AM) was carried out using potassium persulphate (K2S2O8) as an initiator in an aqueous solut...

OBJECTIVES To investigate whether workers in Swedish sulfate mills have an increased risk of death from certain malignancies that have previously been linked to the pulping process. METHODS Subjects of the study (n=2480) were men aged 40-75 at death during 1960-89 in the parishes surrounding four sulfate mills. Exposure assessment was based on information from the personnel files in the mills...