Results 1 to 10 of about 28,384 (160)

Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2010
Comparative study of pulp yield of sap wood and heart wood of Populus deltoides under both Kraft and soda cooking process have been showed that the heart wood pulp has a lower yield than that of sap wood pulp.
Somayeh Ghasemi, Ahmad reza Saraeyan
doaj   +1 more source

Research on Wheat Straw Pulping with Ionic Liquid 1-Ethyl-3-Methylimidazole Bromide [PDF]

open access: yesKemija u Industriji, 2016
In this paper, the pulping process of wheat straw using ionic liquid 1-ethyl-3-methylimidazolium bromide ([Emim]Br) as the digestion liquor is presented.
Wei Song, Yu Deng, Hong Zhu
doaj   +1 more source

Variability of Fruit Quality among 103 Acerola (Malpighia emarginata D. C.) Phenotypes from the Subtropical Region of Brazil

open access: yesAgriculture, 2021
Acerola fruit is one of the richest natural sources of ascorbic acid. As a consequence, acerola fruit and its products are in demand worldwide for the production of health supplements and for the development of functional products.
Daniela Farinelli   +8 more
doaj   +1 more source

The relationship of pulp yield with ethanol pulping concentrations on Acacia hybrid [PDF]

open access: yesJournal of the Indian Academy of Wood Science, 2016
This study aimed at determining the total yield, screened yield, rejected yield, Kappa number and viscosity of organosolv Acacia hybrid pulp. Acacia hybrid wood chips of uniform size were used to undergo pulping in a digester with five different ethanol concentrations, 50, 60, 70, 80 and 90 % (v/v) with 1 M of sodium hydroxide as catalyst and water ...
Kang Chiang Liew, Eunice Wan Ni Chong
openaire   +1 more source

Evaluation and Optimization of Kraft Delignification and Single Stage Hydrogen Peroxide Bleaching for Ethiopian Sugarcane Bagasse

open access: yesJournal of Natural Fibers, 2022
The current study investigated the Ethiopian sugarcane bagasse during its delignification using the Kraft pulping process and bleaching by single stage hydrogen peroxide process.
Medhanit Mamaye   +3 more
doaj   +1 more source

Boron Compounds-Added Kraft Pulping from Scots Pine

open access: yesDrvna Industrija, 2023
In this study, effects of KBH4 (PB), NaBH4 (SB), Etibor-48 (E48), Etidot-67 (E67), and colemanite (Col) on kraft pulp and paper properties of Scots pine (Pinus sylvestris L.) wood were evaluated.
Süleyman Kuştaş, Sezgin Koray Gülsoy
doaj   +1 more source

Improvement of Hardwood Pulp Yield in Continuous Kraft Cooking and Estimation of Pulp Yields (Part III)-Pulp Yields of Isothermal Cooking with Kraft and Polysulfide Liquors as well as Anthraquinone-

open access: yesJAPAN TAPPI JOURNAL, 2004
本報告では,連続クラフト蒸解における広葉樹材クラフトパルプの高収率化とその評価法の研究に関する前報を総合し,考察を加えた。クラフト蒸解液(白液)にポリサルファイド(PS),および,アントラキノン(AQ)を添加すると,パルプ収率が約4.5―5%向上した。また,黒液を白液で置換することにより,収率はさらに向上した。添加する全ての活性アルカリ(AA)の70%を含むPS蒸解液,および,AQを反応開始時から用い,蒸解温度が135℃に到達したときに,残りの30%のAAを含む白液で黒液を交換すると,最高のパルプ収率が得られた。広葉樹材クラフトパルプの収率と,パルプの酸加水分解により得られるキシロースのグルコースに対する量比(X/G比)の間には,良い相関関係が存在した。しかし,この関係は原料樹種に依存するため,X ...
Yokoyama, Tomoya, Ohi, Hiroshi
openaire   +3 more sources

Response surface methodology for optimization of cellulose extraction from banana stem using NaOH-EDTA for pulp and papermaking

open access: yesHeliyon, 2022
Alkaline pulping using sodium hydroxide (NaOH), also known as soda pulping, is predominantly used to extract cellulose for pulp and papermaking. The NaOH was responsible for the dissolution and removal of lignin but unfortunately, simultaneous hydrolysis
Nurul Amal Nadhirah Mohamad   +1 more
doaj   +1 more source

SIFAT PENGOLAHAN DAN SIFAT FISIK PULP SEMBILAN JENIS KAYU DARI INDONESIA BAGIAN TIMUR

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
This  paper  dealt  with  chemical  processing  and  physical  properties  of  wood  for  pulp  of  nine  woods.  The  analyses  consisted  of  pulp  screen  yield,  alkali  consumption,  permanganate    number,  breaking  length,  and  tearing  factor. 
Setyani B   +2 more
doaj   +1 more source

Agronomic yield and quality of industrial tomatoes under NPK doses [PDF]

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental
High doses of nitrogen, phosphorus and potassium in irrigated systems may lead to an increase in the productivity of industrial tomatoes, but may also alter the final quality of the fruits.
Maria N. Almeida Neta   +5 more
doaj   +2 more sources

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