Results 21 to 30 of about 25,897 (299)
Valorization of Old Corrugated Container to Dissolving Pulp
BioResources, 2022 As an alternative raw material for various cellulose derivatives, the current research studied the processing of old corrugated container (OCC) in the subsequent stages of homogenization (soda cooking) and purification (bleaching with hypochlorite).
Negin Ghahrani +4 more
doaj +2 more sources
Chemical Engineering Transactions, 2013 Increased energy and raw material prices along with contracting markets for kraft pulp, have highlighted the need for the pulp industry to enlarge their traditional product portfolio with new value-added products via the implementation of biorefinery ...
V. Lundberg +5 more
doaj +1 more source
Comparative evaluation of the action of two different endoglucanases. Part I: on a fully bleached, commercial acid sulfite dissolving pulp [PDF]
, 2015 A fully bleached commercial acid dissolving pulp was treated with two endoglucanases, one obtained from Paenibacillus barcinonensis (B) and the other one produced from Cerrena unicolor (F) with the intention to improve cellulose reactivity and ...
Quintana, Elisabet +3 more
core +2 more sources
Energy Analysis for Conversion of a Kraft Pulp Mill into a Dissolving Pulp Mill
Chemical Engineering Transactions, 2012 Currently, kraft pulp mills in Europe and North America are facing several challenges and have been forced to think along new products and new business areas.
V. Lundberg +3 more
doaj +1 more source
Life, 2022 This work is designed to assess the antimicrobial efficacy, chelating efficacy, and dissolving capability of the bioactive agent of the Nigella sativa plant (thymoquinone). Four freeze-dried microorganisms were studied.
Rana A. Alamoudi +2 more
doaj +1 more source
Simple one pot preparation of chemical hydrogels from cellulose dissolved in cold LiOH/urea [PDF]
, 2020 In this work, non-derivatized cellulose pulp was dissolved in a cold alkali solution (LiOH/urea) and chemically cross-linked with methylenebisacrylamide (MBA) to form a robust hydrogel with superior water absorption properties.
Lindman, Björn +3 more
core +1 more source
Hemicelluloses in Dissolving Pulps
The Journal of the Society of Chemical Industry, Japan, 1960 溶解用パルプ中の非グルコース成分,ウロン酸などを定量し,原木および蒸解法との関係を明らかにしようと試みた。マンノース基は広葉樹パルプに少なく,針葉樹パルプ,特にアメリカ産パルプに多い。ウロン酸と原木,蒸解法との関係は認められなかった。適当なマンノース基/グルコース基を仮定して,マンノース基量よりグルコマンナン量を計算し,キシラン量と合わせて全ヘミセルロース量を求めたが,これはγ-セルロースと比例関係がある。溶解用パルプ中のヘミセルロースも,フェーリング液によりグルコマンナンとキシランにほぼわけることができる。亜硫酸法および硫酸塩法パルプのα-,β-,γ-セルロースの組成を比較検討した。
Kei Matsuzaki +2 more
openaire +2 more sources
Studying the effects of laccase treatment in a softwood dissolving pulp: cellulose reactivity and crystallinity [PDF]
, 2014 An enzymatic biobleaching sequence (LVAQPO) using a laccase from Trametes villosa in combination with violuric acid (VA) and then followed by a pressurized hydrogen peroxide treatment (PO) was developed and found to give high bleaching properties and ...
Ariza, J. +5 more
core +2 more sources
Alternative chemo-enzymatic treatment for homogeneous and heterogeneous acetylation of wood fibers [PDF]
, 2018 A new chemo-enzymatic treatment is proposed to produce cellulosic fibers suitable for heterogeneous- or homogeneous-phase acetylation. The procedure included enzymatic (laccase–violuric acid) lignin removal from the precursor fibers (unbleached sulfite ...
Ago, Mariko +4 more
core +2 more sources
Xoconostle fruit (Opuntia matudae Scheinvar cv. Rosa) by-products as potential functional ingredients [PDF]
, 2015 There is a lack of information on the potential use of xoconostle cultivars as sources of antioxidants for food, pharmaceutical and colorant industries.
Barros, Lillian +4 more
core +1 more source