Results 81 to 90 of about 280,068 (258)

Selective Separation of the Rare Earth Elements Dysprosium and Neodymium via Tailoring Nanocellulose Chemical Structure

open access: yesAdvanced Functional Materials, Volume 36, Issue 32, 20 April 2026.
Dicarboxylate‐modified anionic hairy cellulose nanocrystals exhibit a high selectivity for dysprosium(III) over neodymium(III). This selectivity arises from disordered dicarboxylate cellulose “hairs” that enable cooperative ionic coordination, hydrogen bonding, and strain‐induced conformational shrinkage.
Roya Koshani   +6 more
wiley   +1 more source

Thermal Characteristics of Lignin Residue from Industrial Processes

open access: yesBioResources, 2013
Many pulp mills and biorefineries today are focusing on the utilization of their residual lignin for economic return. Although lignin can be burned to produce energy, it also has the potential for the production of value-added products. Technical lignins
Sally Krigstin   +3 more
doaj   +1 more source

Investigation of the Static Mixer for Improved Heat Transfer to Black Liquors [PDF]

open access: yes, 1974
The objective of this experiment was to determine an improved method by which evaporation of kraft black liquors to the 50 to 65% total solids level could be sufficiently performed in multiple effect evaporators.
Redmond, Bruce J.
core   +1 more source

Beyond Brown: Lignin's Emerging Role in Structural Color

open access: yesAdvanced Optical Materials, Volume 14, Issue 13, 3 April 2026.
Lignin, long regarded as a brown industrial byproduct, is emerging as a sustainable platform for structural color. This Perspective highlights how lignin's refractive index, intrinsic absorption, and nanoscale assembly enable tunable photonic responses in colloidal and thin‐film architectures, and outlines design strategies to advance scalable, bio ...
Ravi Shanker, Anna Justina Svagan
wiley   +1 more source

PROCESS FOR THE PRODUCTION OF DISSOLVING PULP FROM TREMA ORIENTALIS (NALITA) BY PREHYDROLYSIS KRAFT AND SODA-ETHYLENEDIAMINE (EDA) PROCESS

open access: yesBioResources, 2008
This paper presents a preliminary study for the production of dissolving pulp from Trema orientalis (Nalita). Water prehydrolysis kraft and soda-ethylenediamine (EDA) pulping for the production of dissolving pulp from T.
M. A. Quaiyyum   +3 more
doaj  

Purification of cellulosic pulp by hot water extraction [PDF]

open access: yes, 2016
Hot water extraction (HWE) of pulp in a flow-through reactor was evaluated as a method to purify paper-grade pulps. About 50–80 % of the xylan and up to 50 % of the lignin in unbleached birch Kraft pulp was extracted by the HWE without losses in ...
Borrega Sabate, Marc, Sixta, Herbert
core   +1 more source

Chip-Handling and Kraft Pulping.

open access: yesJAPAN TAPPI JOURNAL, 1996
パルプ原材料の96%を占めるチップの現状と購入チップの受け入れ設備及び貯蔵施設に触れた後, KP蒸解反応と連続蒸解設備の改良について, 反応速度論の立場から解説した。脱リグニン反応速度と炭水化物の崩壊反応速度をチップ厚さの影響なども含め説明し, 時間, 温度, アルカリ濃度, 硫化度及びチップ厚さの5因子を入れた蒸解反応速度式をアルレニウスの式に基づいた実験式として紹介した。さらに蒸解の目的がパルプ成分である炭水化物をできるだけ多く残し, リグニンの残留量を少なくすることから.反応が選択的になり得るための望ましい蒸解反応条件を探るために蒸解反応の選択性とシミュレーションによる最適化を解説した。すなわち, 得られた実験式に各種蒸解条件を入れて数値計算し ...
openaire   +2 more sources

Revisiting acidulation for tall oil and lignin manufacturing

open access: yesThe Canadian Journal of Chemical Engineering, Volume 104, Issue 4, Page 1677-1691, April 2026.
Abstract Tall oil is a byproduct of the kraft pulping process when softwood is used as raw material. As the production of softwood‐based pulp is in high demand, the optimization of the tall oil production process needs to be revisited to ensure the highest quality and quantity of tall oil manufacturing. In this work, the process for tall oil production
Thomas Aro, Weijue Gao, Pedram Fatehi
wiley   +1 more source

Papermaking fibers from giant reed (Arundo donax L.) by advanced ecologically friendly pulping and bleaching technologies

open access: yesBioResources, 2006
The anatomical structure and chemical composition of the stem-wall material of giant reed is considered from the viewpoint of raw material characterization for industrial fiber production.
Pereira, H., Shatalov, A. A.
doaj  

On Studies of Preparation of Kraft Pulp

open access: yesJAPAN TAPPI JOURNAL, 1961
Using the laboratory Valley beater, the following results were obtained.1) When the beating load was constant, the beating with the high peripheral speed of beater roll required the fairly lower freeness than it of the pulp beaten with the low peripheral speed of the roll to attain the constant ratio of tearing strength to bursting strength of paper ...
Nobuakira Fujinami, Takefumi Okamura
openaire   +3 more sources

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