Results 201 to 210 of about 23,214 (252)
Some of the next articles are maybe not open access.
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
openaire +2 more sources
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
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Polyurethane from kraft lignin
British Polymer Journal, 1989AbstractThe condensation of lignin with hexamethylene diisocyanate (HDI) or of a mixture of lignin‐poly(ethylene oxide) (PEO) with HDI was investigated. The lignin used in this study was a kraft lignin from Pinus maritima, and was obtained from black liquor by acidification, filtration and vacuum drying.
H. Cheradame +4 more
openaire +1 more source
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
openaire +1 more source
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
openaire +3 more sources
Lignin. 20. Associative interactions between kraft lignin components
Macromolecules, 1984La distribution de la masse moleculaire depend beaucoup du procede d'isolation et des conditions d ...
Simo Sarkanen +3 more
openaire +1 more source
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
openaire +1 more source
Temperature responsive crosslinked starch-kraft lignin macromolecule
Carbohydrate Polymers, 2023Starch is a natural polymer with a relatively simple structure and limited solubility in water. Kraft lignin (KL) is a complex biopolymer obtained as a by-product from the delignification of wood and grasses. The present work reports developing a temperature-responsive high molecular weight macromolecule from crosslinking KL and starch (KLS).
Jonathan A. Diaz-Baca, Pedram Fatehi
openaire +2 more sources