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Kraft lignin biorefinery: A perspective
Bioresource Technology, 2018Lignin is a huge energy and carbon reserve but owing to its highly biologically recalcitrant nature it is commonly regarded as a waste in lignocellulosic biomass biorefinery. To realize the lignin biorefinery, it is proposed to use Kraft lignin, isolated from black liquor from Kraft pulping mills, as starting material to be fragmented by fast pyrolysis
Jianjun, Hu +2 more
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Fungal demethylation of Kraft lignin
Enzyme and Microbial Technology, 2015Demethylation of industrial lignin has been for long coveted as a pathway to the production of an abundant natural substitute for fossil-oil derived phenol. In an attempt to possibly identify a novel Kraft lignin-demethylating enzyme, we surveyed a collection of fungi by using selected ion flow tube-mass spectrometry (SIFT-MS).
Linyou, Zou +5 more
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Hydrodynamics of kraft lignins
Macromolecules, 1991mesure par RMN PFC du coefficient d'autodiffusion de lignines acetylees et non-acetylees en solution aqueuse ou organique en fonction de la concentration, de la masse moleculaire, du ...
T. M. Garver, P. T. Callaghan
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Desulfurization of kraft lignin
Wood Science and Technology, 2018Kraft lignin is a product of the sulfate pulping process. It usually contains 2–3% total sulfur. Sulfur content acts as deterrent to lignin use in some areas. Sulfur-free lignins are more versatile and can be heat-treated without the release of foul-smelling sulfur compounds.
Andrey N. Evdokimov +5 more
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Journal of Polymer Science Part C: Polymer Symposia, 1971
AbstractA series of high temperature hydrogenolyses‐hydrogenations of kraft lignin in water, organic solvents and aqueous alkali using a variety of catalysts were run. The liquefaction and distillation yields for the resulting products were measured.
J. D. Benigni, I. S. Goldstein
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AbstractA series of high temperature hydrogenolyses‐hydrogenations of kraft lignin in water, organic solvents and aqueous alkali using a variety of catalysts were run. The liquefaction and distillation yields for the resulting products were measured.
J. D. Benigni, I. S. Goldstein
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Similarities in Recalcitrant Structures of Industrial Non‐Kraft and Kraft Lignin
ChemSusChem, 2020AbstractThis work compares the structure of industrially isolated lignin samples from kraft pulping and three alternative processes: butanol organosolv, supercritical water hydrolysis, and sulfur dioxide/ethanol/water fractionation. Kraft processes are known to produce highly condensed lignin, with reduced potential for catalytic depolymerization ...
Andrew W. Tricker +9 more
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Modified kraft lignin for bioremediation applications
Journal of Environmental Science and Health, Part A, 2012Kraft lignin (KL) from industrial pulping of E. globulus wood was subjected to the oxidative modification with the aim to produce sorbent mimicking humic matter for the bioremediation purposes. Lignin was oxidized by polyoxometalate Na(5)[PMo(10)V(2)O(40)] (POM), solely or in the presence of laccase, under pre-selected aerobic conditions (50-60°C, 1-2h,
Santos, Diva A. Simões dos +2 more
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Methanol Fractionation of Softwood Kraft Lignin: Impact on the Lignin Properties
ChemSusChem, 2013AbstractThe development of technologies to tune lignin properties for high‐performance lignin‐based materials is crucial for the utilization of lignin in various applications. Here, the effect of methanol (MeOH) fractionation on the molecular weight, molecular weight distribution, glass transition temperature (Tg), thermal decomposition, and chemical ...
Tomonori, Saito +6 more
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Surfactant properties of kraft lignins
Russian Journal of Applied Chemistry, 2007Formation of the adsorption layer at the solution-air interface is characterized by data on the surface tension in alkaline solutions of kraft lignins extracted from deresined spruce and birch wood. The effects of the lignin nature and solution concentration on intermolecular interaction in the surface layer are studied.
S. B. Selyanina +3 more
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Purification and characterization of kraft lignin
Holzforschung, 2015AbstractTo upgrade the utilization of kraft lignin (KL) for high-performance lignin-based materials (e.g., carbon fiber), the purity, molecular mass distribution (MMD), and thermal properties need to be improved and adjusted to target values. Therefore, different methods, such as ultrasonic extraction (UE), solvent extraction, dialysis, and hot water ...
Fang, W. +5 more
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