kraft lignin
Fundamentals of oxygen delignification. Part II, Functional group formation/elimination in residual Kraft lignin
... The data of Fig. 4 show the contribution of the oxidized groups in residual kraft lignin toward lowering the pH of the aqueous medium during oxygen delignification conditions. In a manner analogous to the ...
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The effect of metal ions on the reaction of hydrogen peroxide with Kraft lignin model compounds
... residual Kraft lignin harder to ...of Kraft pulp toward chlorine dioxide after oxygen or peroxide delignification ...residual Kraft lignin during an oxygen and a per- oxide stage are ...
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DECOLORIZATION OF KRAFT LIGNIN BY LIGNINOLYTIC BACTERIAL ISOLATES FROM TIMBER SOILS OF RAIPUR, CHHATTISGARH
... i.e. kraft pulping and bleaching. Kraft lignin is polymer by product of this ...the kraft pulping process, wood chips are cooked in the solution of sodium hydroxide and sodium sulfide at ...
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Selective modification of the β β linkage in DDQ treated Kraft lignin analysed by 2D NMR spectroscopy
... pyran-4-one CH proton in 5 and a new cross peak was observed in the Kraft lignin spectrum after treatment with DDQ (Fig. 5A). These observations were confirmed by a doping experiment, in which an authentic ...
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Isolation of residual kraft lignin in high yield and purity
... residual kraft lignin isolated by the traditional acidolysis method is representative only of a limited frac- tion of the lignin present in kraft ...low lignin yields the procedure ...
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Spectral analysis of the successive degradation process of kraft lignin by alkaline oxygen treatment
... the lignin more soluble, the generation of a resistant a- carbonyl-type phenolic substructure was suggested was also suggested as a major chemical modification occurring by fast ...
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Production of Lignin-Based Phenolic Resins Using De-Polymerized Kraft Lignin and Process Optimization
... of lignin average weight molecular weights on the maximum shear stress of lignin phenol formaldehyde (LPF) ...low lignin Mw and high lignin Mw refer to lowest weight average relative molecular ...
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Microwave assisted synthesis and characterization of Carboxymethyl Lignin biopolymer from Kraft Lignin obtained from biomass of Bagasse pulping
... Carboxymethyl lignin (CML) using bagasse based insoluble Kraft ...of kraft lignin from Black liquor of sugar cane bagasse pulping (bio mass) and rapid synthesis of CML biopolymer in IPA medium ...
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Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam
... hardwood kraft lignin (HKL) from 25% to 70% (molar percentage) in preparing rigid polyurethane foam ...the lignin was chemically crosslinked not just physically trapped in the foams as ...same ...
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Characterization and genomic analysis of kraft lignin biodegradation by the beta-proteobacterium Cupriavidus basilensis B-8
... Background: Lignin materials are abundant and among the most important potential sources for biofuel ...efficient lignin degradation process has considerable potential for the production of a variety of ...
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RETRACTED ARTICLE: Bacterial conversion of depolymerized Kraft lignin
... wood Kraft lignin. Kraft lignin is a complex substrate with high molecular weight making it a difficult sub- strate for direct microbial uptake, and therefore, a previ- ously developed ...
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Reductive Depolymerization of Kraft Lignin for Chemicals and Fuels Using Formic Acid as a In-Situ Hydrogen Source
... manufacture, lignin is generated as a by-product (15-30 % by weight, 40 % by energy) that is used as mainly a fuel for heat and power generation (Perlack et ...International Lignin Institute, the annual ...
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Reduction of aluminum toxicity to radish by alkaline oxygen treated kraft lignin
... The growth of radish root in solution and in soil containing A L with or without addition of alkaline oxygen treated lignins under controlled p H conditions was [r] ...
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Structure of thermobifida fusca DyP type peroxidase and activity towards kraft lignin and lignin model compounds
... the lignin polymer during cellulose degradation, we wanted to examine whether the ...towards lignin substrates, the determination of its crystal structure, and an investigation of the function of active ...
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Bacterial conversion of depolymerized Kraft lignin
... The molecular weight distributions (MWDs) of differ- ent lignin samples were determined with a size-exclusion chromatography (SEC) system, following an established method [34]. The setup adopted for the size ...
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Direct production of biodiesel from high-acid value Jatrophaoil with solid acid catalyst derived from lignin
... waste Kraft lignin via treatment by phosphoric acid, pyrolysis and sulfuric acid was shown to be useful for esterifica- tion and one-step biodiesel production from low-quali- fied oils due to its high acid ...
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Corrosion Inhibition of Mild Steel in Near Neutral Solution by Kraft and Soda Lignins Extracted from Oil Palm Empty Fruit Bunch
... of Kraft lignin (KL) and Soda lignin (SL) on the corrosion of mild steel in ...of lignin onto the surface to form ferric-lignin ...hence, lignin can be used as a rust ...
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Graphical Abstract. Lignin antioxidant activity is studied regarding the influence of biomass source (soft and
... The status quo of antioxidant assays, their advantages and limitations were shortly summarized and compared. Results from antioxidant capacity studies using the DPPH assay were correlated to structure differences of ...
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Evaluation of hydrochars from lignin hydrous pyrolysis to produce biocokes after carbonization
... torrefied lignin (1.7 wt.%) is also lower than that in pine Kraft lignin but higher than the ash content in the hydrochar from pristine lignin, showing that torrefaction prevents the transfer ...
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On the Propensity of Lignin to Associate; Static Light Scattering Measurements
... individual lignin molecular components, meaning that lignin molecules are not sharing electrons, but rather electromagnetic interactions are ...stable lignin sols in aqueous solution, whose extent of ...
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